所有工具

浏览我们完整的 488 个免费在线工具合集。

颜色

11 个工具

颜色转换器

转换颜色格式。

Palette 生成器

Generate beautiful, harmonious color palettes from a seed color.

渐变生成器

创建CSS渐变。

对比度检查器

检查颜色对比度。

Tailwind 颜色 查找器

Find the closest Tailwind CSS color for any hex or RGB value.

盒子 Shadow 生成器

Design CSS box shadows with a visual editor and live preview.

图片 颜色 Palette 提取器

Upload an image and extract its dominant color palette using k-means clustering.

图片 颜色 选择器

Upload an image and click anywhere to pick exact color values in HEX, RGB, and HSL.

颜色 Shade 生成器

Generate a full range of tints and shades from any base color for design palettes.

PANTONE to HEX

Look up popular PANTONE colors and get their HEX and RGB equivalents. Browse by color family.

颜色 Temperature 转换器

Convert Kelvin color temperature to RGB and HEX. Reference chart for candles, tungsten, daylight, and more.

内容

21 个工具

HTML 链接-in-Bio 构建器

Generate a blazing fast static HTML alternative to Linktree.

Podcast Show Notes 构建器

Generate rich markdown show notes with timestamps and resource links.

Email Preheader 生成器

Generate stronger inbox preview text that complements your subject line.

Startup 名称 Availability 检测器

Generate startup names from a keyword and jump into registrar availability checks.

UTM Tracking 构建器

Standardize your marketing attribution links.

链接-in-Bio 生成器

Create a simple static HTML profile page.

Hashtag Group 生成器

Curated hashtag clusters to boost organic reach.

文本 to Hashtags

Turn captions, notes, or drafts into platform-ready hashtag ideas.

Thread to Tweet 转换器

Condense a long thread into one tighter post for X or Twitter.

Bio 生成器 for Social

Generate sharper bios for Instagram, X, LinkedIn, and creator profiles.

Email Subject Line 测试器

Score subject lines, preview mobile fit, and create test variants.

Rap 名称 生成器

Generate catchy stage names for rappers, producers, and alter egos.

Bio 链接 Page 构建器

Create a customizable link-in-bio page with social icons and downloadable HTML.

Blog 标题 生成器

Generate catchy, click-worthy blog post titles from your keywords using proven headline formulas.

Business 名称 生成器

Generate creative startup and business name ideas from your keywords instantly.

Engagement 比率 计算器

Calculate social media engagement rates by followers and reach with quality ratings.

Hashtag 生成器

Generate categorized hashtag sets for any niche to boost social media reach.

Headline 分析器

Score your headlines for power words, emotional impact, length, and CTR potential.

Slogan 生成器

Generate catchy marketing slogans and taglines from your brand keywords.

UTM 链接 构建器

Build campaign tracking URLs with UTM source, medium, campaign, and content parameters.

AI Content Detector

Detect if text is AI-generated using heuristic analysis and pattern recognition.

转换器

22 个工具

长度转换器

转换长度。

重量转换器

转换重量。

温度转换器

转换温度。

Volume 转换器

Convert liters, gallons, cups, and ounces for cooking and science.

Area 转换器

Determine exact conversions for sq meters, sq feet, and acres.

速度 转换器

Quickly find equivalent speeds in mph, km/h, knots, and mach.

Digital Storage 转换器

Transform bytes to megabytes, gigabytes, terabytes, and more.

时间 转换器

Convert exact units measuring seconds, minutes, days, and years.

单位转换器

转换单位。

Byte 转换器

Convert between bytes, KB, MB, GB, TB, and PB.

HEIC to JPG / PNG 转换器

Convert HEIC or HEIF photos into standard JPG or PNG files right in your browser.

图片 Format 转换器

Convert images between JPG, PNG, and WebP without uploading them anywhere.

Fuel Economy 转换器

Convert between MPG and L/100km.

Shoe 大小 转换器

Convert shoe sizes between US, UK, EU, and CM.

Bra 大小 转换器

Translate global bra sizing conventions.

Ring 大小 转换器

Standardize ring sizes across regions and diameters.

Excel / CSV to PDF 转换器

Turn pasted spreadsheet rows or uploaded CSV/TSV files into a polished PDF table.

Cooking Measurement 转换器

Convert between cups, tablespoons, teaspoons, milliliters, and other kitchen measurements.

Digital Storage 转换器

Convert between bits, bytes, kilobytes, megabytes, gigabytes, and terabytes instantly.

Shoe 大小 转换器

Convert shoe sizes between US, UK, EU, and centimeter measurements for men and women.

Roman Numeral Converter

Convert numbers to Roman numerals and Roman numerals back to decimal instantly with validation.

Roman Numeral 转换器

Convert numbers to Roman numerals and Roman numerals back to decimal instantly.

数据

29 个工具

JSON 验证器 & 格式化工具

Validate syntax, catch errors, and auto-indent complex JSON payloads.

Base64转图片

转换为图片。

图片转Base64

转换为Base64。

URL Parser

Parse, inspect, and extract parts of URLs and query parameters.

JSON-to-Zod-to-Prisma

Convert JSON payloads into TypeScript Interfaces, Zod schemas, and Prisma models instantly.

JSON Diff Visualizer

Compare two JSON objects and inspect structural changes path by path.

SQL Query Runner

Run practical SQL queries against an in-browser CSV-backed table.

JSON Schema 生成器

Generate draft 2020-12 JSON Schema documents from sample JSON.

.env 文件 验证器

Audit, validate, and alphabetically sort your environment variables safely.

CSV转JSON

CSV转JSON。

XML 格式化工具

Format, validate and prettify raw XML documents.

JSON格式化工具

格式化和验证JSON数据。

Base64 编码器/解码器

Encode and decode strings to and from Base64 format.

URL编码器

为网页编码URL。

SQL格式化器

格式化SQL代码。

数字 Base 转换器

Convert numbers between binary, octal, decimal, and hex.

Unix Timestamp 转换器

Convert Unix timestamps to human-readable dates and back.

JSON转CSV

JSON转CSV。

YAML转JSON

YAML转JSON。

Binary-Decimal-Hex 转换器

Convert between binary, decimal, and hexadecimal. All 6 directions: bin→dec, bin→hex, dec→bin, dec→hex, hex→bin, hex→dec.

JWT 构建器

Build and encode JSON Web Tokens with custom headers and payloads.

Unicode 检查器

Paste any text and inspect each character\

数字 to Words

Convert any number to English words, ordinal form, and currency format. Handles up to quadrillions.

Barcode 生成器

Generate CODE128 barcodes from any text. Download as PNG instantly in your browser.

Fake Dataset 生成器

Generate realistic fake CSV datasets with names, emails, phones, dates, salaries, and more.

ISS Tracker

Track the real-time location of the International Space Station as it orbits Earth.

Starlink Tracker

View live positions of SpaceX Starlink internet satellites orbiting Earth.

Space Launch Tracker

Browse upcoming rocket launches from space agencies and private companies worldwide.

NASA Image Viewer

Search and explore thousands of NASA photos from space, Earth, and astronomy.

开发者

43 个工具

HTML 格式化工具

Format, beautify, and auto-indent ugly or minified HTML code.

HTML Minifier

Minify and compress your HTML code to save file size and boost load speeds.

RGB to HEX 转换器

Convert color values between RGB blocks and standard Hex codes.

PX to REM 转换器

Translate CSS pixel constraints to accessibility-standard rem ratios.

CSS 格式化工具

Beautify nested and unformatted CSS code blocks securely.

CSS 盒子 Shadow 生成器

Visually construct CSS layer shadows and generate cross-browser code.

Markdown 表格 生成器

Construct MD tables visually without writing the tedious syntax manually.

Regex Explain 工具

Turn regular expressions into plain-English explanations for faster debugging.

SVG to JSX 转换器

Convert raw SVG code into a React JSX component instantly.

正则表达式测试器

测试正则表达式。

HTML Entity 工具

Encode and decode HTML entities for safe web content.

CSS压缩器

压缩CSS代码。

JS Minifier

Minify JavaScript code by removing whitespace and comments.

Glassmorphism 生成器

Design frosted glass CSS UI components with a visual editor.

Neumorphism UI 生成器

Design soft UI CSS components instantly with a visual editor.

文本比较器

比较两个文本。

Tailwind UI Visualizer

Paste Tailwind HTML and view a sandboxed live preview instantly.

React to Vue 转换器

Convert functional React components to Vue 3 Composition API.

Extension Manifest 构建器

Visually scaffold Chrome Extension MV3 manifest.json files.

PDF Signature

Draw a signature and place it on a PDF page entirely in your browser.

PDF Merge

Combine multiple PDF files into one merged document directly in your browser.

PDF Split

Split one PDF into smaller page ranges or extracted sections locally in your browser.

PDF Compress

Estimate and prepare a smaller PDF output with compression presets directly in your browser.

OCR PDF to Text

Extract readable text from scanned PDF documents with a clean copy-ready output.

PDF to Word

Prepare an editable document export from a PDF with honest fidelity guidance for complex layouts.

Word转PDF

Word转PDF。

OCR Image to Text

Extract readable text from screenshots, scans, receipts, and images with a clean copyable result.

JWT Decoder Pro

Decode JWT headers and payloads locally with readable inspection output and expiry visibility.

PDF Page 数字 Adder

Add page numbers to every PDF page with custom placement, size, labels, and page-range control.

PDF Compare

Compare two PDFs locally by hash, metadata, page dimensions, and form fields.

Fillable PDF 表单 Creator

Create a browser-generated fillable PDF with text fields, dropdowns, and checkboxes.

SVG 优化器 & Minifier

Minify SVG code, strip comments, reduce whitespace, and download the optimized file.

Chmod 计算器

Calculate Unix file permission values by toggling read, write, and execute bits visually.

CSS Flexbox 生成器

Visually build CSS Flexbox layouts with live preview and generated code output.

Favicon 生成器

Upload any image and generate favicons in all standard sizes from 16px to 512px.

HTML to Markdown 转换器

Convert HTML code into clean, readable Markdown syntax instantly.

Common Regex Patterns

Browse and copy common regex patterns for email, URL, phone, date, and more.

CSS 网格 生成器

Visually build CSS Grid layouts and generate production-ready code.

CSS Clip-Path 生成器

Generate CSS clip-path polygon values with visual presets. See a live preview and copy the CSS.

Visual Regex 测试器

Test regular expressions with live highlighted matches. See match groups and use common regex snippets.

文本 Diff 合并器

Compare two text blocks line by line. See added, removed, and unchanged lines highlighted with stats.

JSON Path Evaluator

Query and extract data from JSON using JSONPath expressions with real-time results and syntax highlighting.

JWT解码器

解码JWT令牌。

金融

38 个工具

Freelance 比率 计算器

Calculate your true required hourly rate based on target income.

Wedding Budget 规划器

Structure and visualize your entire wedding budget with dynamic categories.

Credit Card Payoff

Visualize exactly how long your credit card debt will take to pay off.

SIP 计算器

Calculate future wealth using a Systematic Investment Plan.

Lumpsum 计算器

Estimate returns on a one-time lumpsum investment over time.

ROI 计算器

Calculate Return on Investment and annualized gains.

Income Tax 计算器

Estimate federal income tax brackets and net take-home pay.

Net Worth 计算器

Track assets vs liabilities to determine your true net worth.

Retirement 计算器

Project 401k savings and compound interest for retirement.

Auto Loan Payoff

Calculate interest saved by making extra monthly car payments.

Inflation 计算器

Measure the historical or projected purchasing power of money.

SaaS Churn 计算器

Calculate customer churn rate and projected user numbers.

Rent vs Buy 计算器

Compare the long term costs of renting vs owning a home.

Cost Per Wear 计算器

Calculate the true cost of an item based on how often you wear it.

FIRE Retirement 计算器

Calculate your exact Financial Independence, Retire Early number.

Crypto Profit 计算器

Track crypto gains, trading fees, and total net ROI.

CAGR 计算器

Find the Compound Annual Growth Rate of an investment.

Markup / Margin 计算器

Compare markup vs margin and find the selling price needed for your target profit.

Compound Interest Visualizer

Project compound growth with recurring contributions, milestones, and inflation-adjusted value.

Debt-to-Income Ratio 计算器

Calculate front-end and back-end DTI ratios for mortgages, lending, and budgeting.

Amazon Fee 计算器

Estimate Amazon referral fees, FBA costs, ad spend, and net profit per unit.

Latency Cost 计算器

Estimate how much page speed improvements could recover in revenue and profit.

Subscription vs One-时间 Cost 计算器

Compare recurring subscription spend against one-time purchase costs over time.

Lead Value 计算器

Turn traffic, conversion rates, and deal value into a real per-lead and per-visitor number.

Electricity Cost 计算器

Calculate daily, monthly, and yearly electricity costs for any appliance by wattage.

EMI 计算器

Calculate Equated Monthly Installment for loans. Input principal, interest rate, tenure. Output EMI amount, total interest, total payment.

Expense Ratio Impact 计算器

Compare how different fund expense ratios eat into your long-term investment returns.

Gas Trip Cost 计算器

Calculate the total fuel cost for a road trip based on distance, MPG, and gas price.

Invoice 生成器

Create professional invoices with line items, tax calculations, and PDF export.

Paycheck 计算器

Estimate your net take-home pay after federal tax, state tax, and retirement deductions.

Rent Affordability 计算器

Calculate how much rent you can afford based on income, debts, and the 30% rule.

Startup Runway 计算器

Calculate how many months of runway your startup has based on cash, burn, and growth.

Stock Return 计算器

Calculate total return, percentage gain, and CAGR on any stock investment.

Crypto Price Tracker

Track Bitcoin, Ethereum and other cryptocurrency prices in real-time with 24h changes.

加密货币追踪器

实时追踪加密货币价格。

Discount Calculator

Calculate final price after discount by percentage or fixed dollar amount instantly.

Fuel Cost Calculator

Calculate fuel costs for trips with MPG and price per gallon or liter conversions.

Hourly to Salary

Convert hourly wage to annual, monthly, weekly, and daily salary equivalents instantly.

娱乐

33 个工具

Spin the 转盘

A customizable random picker wheel for decisions and games.

抛硬币

抛硬币。

掷骰子

掷骰子。

Fake Person 生成器

Generate polished fictional personas for mockups, demos, QA, and creative work.

Fake iOS Message 生成器

Create fake iOS conversational text bubbles for memes and social media.

Dog to Human Years

Adjusted breed and size scalings for dog aging.

Cat to Human Years

Calculate equivalent human aging for felines.

What Should I Watch? 测验

Take a short mood quiz and get a tailored movie or series recommendation.

颜色 Personality Test

Answer quick vibe questions to reveal your color aura personality.

Birthday Flower & Birthstone Lookup

Look up the traditional birth flower, birthstone, and zodiac vibe for any birthday.

This Day in History

Browse notable historical events, births, and deaths for any calendar date.

Doge Meme 制作器

Create authentic 2013-era doge memes with Comic Sans.

Fortune Cookie 旋转器

Crack open a daily cookie to find your fortune and lucky numbers.

Affirmation 生成器

Generate daily positive affirmations to boost confidence and motivation.

Fake Identity 生成器

Generate random fictional identities with names, addresses, and job titles for testing.

Mad Libs 单词 Game

Fill in nouns, verbs, and adjectives to create hilarious randomized stories.

Magic 8-Ball

Ask the Magic 8-Ball any yes-or-no question and receive a mysterious fortune.

Meme 文本 生成器

Upload an image and add Impact-style top and bottom text to create classic memes.

随机 名称 选择器

Paste a list of names and randomly pick a winner with animated selection.

数字 Guessing Game

Guess the secret number with higher/lower hints in as few tries as possible.

Reaction 时间 Test

Measure your reaction speed in milliseconds with a click-when-green test.

Rock Paper Scissors

Play classic Rock Paper Scissors against the computer with score tracking.

Truth or Dare 生成器

Get random truth questions and dare challenges for parties and game nights.

单词 Scramble Game

Unscramble jumbled letters to find the hidden word and build your streak.

Would You Rather

Answer fun "would you rather" dilemma questions with two impossible choices.

颜色 Blind Test

Test your color vision and hue spotting ability.

Country Info Lookup

Get detailed information about any country including capital, population, currency, and languages.

Random Animal Pictures

Get random pictures of animals with facts and descriptions for each animal.

Random Fact Generator

Generate interesting and surprising random facts updated daily for learning and entertainment.

Random Joke Generator

Get random jokes from multiple categories including programming, knock-knock, and more.

Random Quote Generator

Get inspirational and motivational random quotes from famous authors and figures.

This Day in History

Discover important historical events, births, and milestones from today's date in history.

Fake Person Generator

Generate polished fictional personas with names, addresses, and job titles for mockups, demos, QA, and creative work.

游戏

28 个工具

Typing 速度 Test

Test your typing speed in WPM with accuracy tracking and real-time error highlighting.

单词 Guess

Play a daily word guessing game similar to Wordle.

2048

Slide tiles and merge them to reach 2048.

Minesweeper

Clear the hidden minefield without detonating any bombs.

Sudoku

Classic number puzzle game. Fill the grid with digits 1-9.

Nonogram

Solve logic puzzles to reveal a hidden picture.

Crossword Mini

Solve a quick daily mini crossword puzzle.

Web Dev Tycoon

An idle clicker game. Build your web development empire.

Pizza Clicker

Click to bake pizzas and upgrade your pizzeria.

Aim Trainer

Improve your mouse accuracy and reaction speed.

Snake

Classic retro snake game. Eat food and grow longer.

Block Drop (Tetris)

Clear lines by strategically dropping cascading blocks.

Flappy 盒子

Flap your way through obstacles in this frustratingly fun game.

Breakout

Smash through retro brick layouts with a bouncing ball.

Space Invaders

Defend the Earth from waves of descending alien ships.

Tower Stacker

Stack moving blocks as high as you can.

Tic Tac Toe

Play the classic X\

Connect 4

Drop discs to connect four in a row before your opponent.

Hangman

Guess the hidden word before the stickman is fully drawn.

Math Dash

Solve quick math problems against the clock.

Solitaire

Play classic Klondike Solitaire right in your browser.

Checkers

Play a classic game of checkers against a computer opponent.

Memory Card Match

Test your memory by finding matching pairs of cards.

Simon Says

Memorize and repeat the growing sequence of colors.

Whack-A-Mole

Whack the moles as they pop out of their holes!

Reaction Time Test

Test your reaction time with click-speed game and track average reactions across multiple trials.

Trivia Quiz Game

Play trivia questions with multiple difficulty levels, score tracking, and instant feedback.

Typing Speed Test

Test typing speed and accuracy with 60-second timer, WPM calculation, and accuracy metrics.

游戏

15 个工具

FPS Sensitivity 转换器

Convert your mouse sensitivity between CS2, Valorant, Apex, Fortnite, and Overwatch 2.

D&D Dice Roller

Roll any combination of polyhedral dice (d4–d100) with modifiers, advantage, and disadvantage.

Character Stat Roller

Roll D&D 5e ability scores using 4d6 drop lowest, standard array, or point buy.

Tournament Bracket 生成器

Create single elimination brackets for 2–16 players. Click to advance winners through the rounds.

Gamer Tag 生成器

Generate unique gamer tags and usernames with styles like Dark, Epic, Funny, and Cute.

Speedrun 计时器

Precision speedrun timer with named splits, spacebar controls, and split time tracking.

Loot 表格 模拟器

Build a loot table with weighted items and simulate hundreds of rolls to see drop rates.

NPC 名称 生成器

Generate fantasy RPG NPC names for Humans, Elves, Dwarves, Orcs, and more — with personality traits.

RPG Quest 生成器

Generate random tabletop RPG quest hooks with quest giver, objective, location, complication, and reward.

RPG Damage 计算器

Calculate min, max, and average damage for any RPG build — includes crit multiplier, resistance, and DPS.

Tier List 制作器

Create drag-and-drop tier lists with S through F tiers. Add items and rank anything.

随机 地图 Seed 生成器

Generate random seeds for Minecraft, Valheim, Terraria, Stardew Valley, and more. Save your favourites.

Battle 模拟器

Set up two fighters with stats and simulate turn-based combat. Run 100 battles to see win percentages.

Gaming Loadout 构建器

Build and share your gaming loadout. Set weapon, armor, gadgets, and perks for any game.

Hex 网格 生成器

Generate interactive hex grids for tabletop RPG maps. Click to fill hexes and add labels.

健康

23 个工具

Daily Water 追踪器

Track your daily hydration progress with a visual water jug.

TDEE 计算器

Find your Total Daily Energy Expenditure and maintenance calories.

Calories to Steps 追踪器

Calculate how many steps or miles it takes to burn off a specific food.

Body Fat 计算器

Estimate your body fat percentage using the US Navy method.

Lean Body Mass

Determine your lean body mass accurately with the Boer formula.

Water Intake 计算器

Calculate exactly how much water you should drink daily.

One Rep Max (1RM)

Find out your theoretical 1-rep max and lifting percentages.

Running Pace 计算器

Determine your race pace and split times for any distance.

Macro 计算器

Split your daily calories into protein, carbs, and fats.

Target Heart 比率 Zones

Find your exact target heart rate zones for cardio training.

Period & Ovulation

Track your menstrual cycle and estimate ovulation/fertile days.

BAC 计算器

Calculate your Estimated Blood Alcohol Content (Widmark Formula).

Sleep Cycle 计算器

Calculate the optimal time to go to bed or wake up refreshed.

BMI计算器

计算体质指数。

Pregnancy 计算器

Estimate due date based on LMP, conception, or IVF transfer.

Ovulation 计算器

Estimate your fertile window and next ovulation dates.

Blood Type Compatibility

Check blood type donation and transfusion compatibility across all 8 types.

盒子 Breathing Exercise

Follow a guided 4-4-4-4 box breathing animation to reduce stress and improve focus.

Caffeine Half-Life 计算器

Track how caffeine decays in your body and see if it will keep you up at bedtime.

Ideal Weight 计算器

Calculate your ideal body weight using Devine, Robinson, and other medical formulas.

Air Quality Checker

Check real-time air quality index and pollution levels by location using live APIs.

Color Blindness Test

Ishihara-style color blindness test with immediate results and diagnosis.

Pregnancy Due Date

Calculate due date and gestational age from last menstrual period using Naegele's rule.

图片

24 个工具

二维码生成器

创建二维码。

二维码扫描器

上传图片，在浏览器中即时解码二维码。

图片 Metadata 查看器

Read EXIF metadata and download a stripped, privacy-safe copy of your image.

Batch 图片 调整大小工具

Resize multiple images to a maximum width and height in one pass.

Spotify Playlist Cover 制作器

Generate colorful gradients and textured playlist covers.

Profile Picture 制作器

Create a polished circular avatar from any photo with zoom, framing, and ring controls.

Twitch Emote 调整大小工具

Automatically resize emotes to 112px, 56px, and 28px perfectly.

Pixel Art Avatar 构建器

Draw 8x8 pixel aesthetics and download them for profile pictures.

EXIF Remover

Inspect and remove privacy-sensitive image metadata before sharing photos publicly.

Image Sharpener

Sharpen slightly soft images with controlled strength before export.

Image Upscaler

Preview larger cleaner image dimensions before export with practical upscale factors.

Background Remover Pro

Preview cleaner subject cutouts with realistic scope notes for simple background-removal workflows.

Background 删除器

Remove simple solid-color backgrounds and export a transparent PNG.

颜色 Blindness 模拟器

Preview how an uploaded image may appear for protanopia, deuteranopia, tritanopia, and achromatopsia.

Face Blur & Pixelate

Draw privacy boxes over faces or sensitive areas and export a blurred or pixelated image.

图片 压缩器 to KB

Compress and resize images to specific file sizes (50KB, 100KB, 200KB). Upload, adjust quality, download instantly. Supports JPG, PNG, WebP.

图片 Resize to KB

Resize and compress images to exact target file sizes like 50KB, 100KB, or 200KB for uploads and web optimization.

图片 裁剪器

Crop and rotate images to any dimensions with a visual drag-to-select interface.

图片调整器

调整图片大小。

图片 Format Exporter

Upload any image and convert it to PNG, JPEG, or WebP format instantly in your browser.

图片 Watermark 工具

Add custom text watermarks to images with adjustable opacity, size, and position.

Device Screenshot Mockup

Place screenshots inside realistic phone, tablet, and laptop device frames.

Social Media 图片 调整大小工具

Instantly see the correct image dimensions for Instagram, Facebook, Twitter, and more.

图片压缩器

压缩图片。

数学

11 个工具

Percentage 计算器

Multi-mode percentage calculator. Find X% of Y, X as % of Y, or % change between values.

Mortgage 计算器

Calculate monthly mortgage payments, interest, and amortization.

Bill & Tip 分割器

Split complex restaurant bills and tips evenly across your party.

Smart Tip 计算器

Calculate the tip, split the check, and round totals intelligently for dining out.

货币转换器

转换货币。

Loan 计算器

Estimate personal loan and auto loan repayment schedules.

Salary 计算器

Convert between hourly, weekly, monthly, and annual salaries.

年龄计算器

计算年龄。

Aspect Ratio 计算器

Calculate aspect ratios and resize dimensions proportionally.

Final Grade 计算器

Calculate the minimum final exam score needed to reach your desired course grade.

GPA 计算器

Calculate your semester and cumulative GPA from course grades and credit hours.

音乐

20 个工具

Virtual Metronome

Simple, accurate BPM metronome for musicians and practice.

BPM Tap Tempo

Tap to the beat and instantly detect the BPM of any song with genre matching.

Chord Progression 生成器

Generate common chord progressions in any key for songwriting and music production.

Focus Sound 生成器

Generate ambient noise with adjustable rain, fireplace, and other soundscapes for focus.

Virtual Metronome

A precise, adjustable BPM metronome with visual beats for music practice.

Guitar Tuner

Tune your guitar with standard EADGBE tuning — play each string note in your browser.

Scale 查找器

Find notes in any musical scale. Choose root note and scale type to see all scale degrees.

Circle of Fifths

Interactive circle of fifths. Click any key to see key signature, relative minor, and neighbouring keys.

Song Key Transposer

Transpose chords and lyrics to any key. Supports all common chord types including 7ths, sus, and add9.

Drum Pattern 生成器

Create drum patterns with a 16-step sequencer. Play back kick, snare, and hi-hat patterns in your browser.

MIDI Note Lookup

Look up any MIDI note number to get the note name, octave, and frequency in Hz.

Music Interval Trainer

Train your ear by identifying musical intervals. Play two tones and guess the interval.

Songwriting Prompt 生成器

Get random songwriting prompts combining emotion, setting, character, and theme.

Practice Session 计时器

Structured practice timer for musicians. Add timed sections and get audio alerts between them.

Beats Per Bar 计算器

Calculate note durations, beat length, and bar duration for any BPM and time signature.

Key Compatibility 检测器

Check how compatible two musical keys are for mashups or modulation. See shared chords and pivot points.

Audio Frequency 图表

Visual frequency range reference for common instruments from bass guitar to cymbals.

Music Theory 测验

Test your music theory knowledge with 10-question quizzes on intervals, chords, and scales.

Setlist 规划器

Plan your band setlist with song durations and energy levels. Auto-arrange for the best show flow.

Tempo Tapper

Tap to find the BPM of any song. Press the button or spacebar repeatedly to calculate tempo.

网络

19 个工具

What is my IP?

Instantly view your public IP address, ISP, and geographic location.

Stock Market Hours Check

Check if global stock exchanges (NYSE, TSE, LSE) are currently open.

Cron Job 生成器

Generate and translate crontab expressions with a visual GUI.

cURL to Fetch 转换器

Convert raw cURL shell commands into JavaScript Fetch or Axios requests.

cURL 构建器

Visually build cURL commands with headers, params, auth, and JSON bodies.

API Explorer

Send live HTTP requests with custom headers, params, and request bodies.

GraphQL 演练场

Run GraphQL queries, mutations, variables, and introspection requests in one place.

WebSocket 测试器

Open WebSocket connections, send messages, and inspect live server frames.

Favicon 提取器

Extract favicon, apple-touch-icon, and shortcut icon URLs from any website.

Webhook 测试器

Fire signed webhook payloads at any endpoint and inspect the response.

HTTP Status Codes

Quick reference for all HTTP status codes with descriptions.

HTTP Status 代码 检测器

Bulk-check live URLs for 200, 301, 404, 500, and other status codes.

重定向检查器

跟踪重定向。

IP Geolocation Lookup

Look up the location, ISP, timezone, and coordinates of any IP address. Auto-detects your own IP.

DNS查询

查询DNS记录。

SSL检查器

验证SSL证书。

Cron Next Run 计算器

Enter a cron expression and see the next 10 scheduled run times with a human-readable description.

WHOIS Lookup

Look up domain registration info — registrar, creation date, expiry, nameservers, and status.

Deep 链接 生成器

Build App Store and Play Store deep links with UTM parameters. Generates a QR code automatically.

效率

13 个工具

Working Days 计算器

Calculate exactly how many business days are between two dates.

Pomodoro 计时器

Focus timer utilizing the 25/5 minute Pomodoro work protocol.

Meeting ROI 计算器

Calculate exactly how much money a meeting just cost the company.

Bucket List 制作器

Organize your bucket list by category and track which goals you have completed.

Weighted Decision 矩阵

Score and compare options against weighted criteria to make better decisions.

Eisenhower Priority 矩阵

Organize tasks into urgent/important quadrants to prioritize what matters most.

Email Signature 生成器

Design a professional HTML email signature with customizable colors and social links.

Flashcard Study 工具

Create, flip, and study flashcards with a spaced-repetition scoring system.

Daily Habit 追踪器

Track daily habits on a visual calendar grid and build consistent streaks.

Meeting Cost 计算器

Calculate the real-time dollar cost of a meeting based on attendees and salaries.

Recipe Scaler

Scale recipe ingredient quantities up or down for any number of servings.

Resume Bullet Point 构建器

Craft impactful resume bullet points using strong action verbs and quantified results.

Wedding Speech 生成器

Generate structured wedding speech outlines for best man, maid of honor, and parents.

SEO

38 个工具

Sitemap 提取器

Fetch and list URLs from a live sitemap.xml file or sitemap index.

robots.txt 验证器

Fetch or paste a robots.txt file and validate the core crawler directives.

Meta Tag 生成器

Generate perfect SEO meta tags for your web pages.

Open Graph 预览

Preview how your page looks when shared on social media.

Robots.txt 生成器

Generate a robots.txt file to control search engine crawling.

Sitemap 生成器

Generate XML sitemaps for better search engine indexing.

SEO 标题 Case 转换器

Automatically format titles with Chicago/APA style capitalization rules.

Keyword Density 检测器

Analyze keyword frequency and density in your content.

Search Keyword Combiner

Quickly cross-match permutations of keyword lists for Ad campaigns.

Domain Bulk 检测器

Generate bulk TLD permutations and bulk search available domains.

Cold Email Subject Scorer

Analyze your cold email subject line for spam triggers and length.

SERP 模拟器

Preview Google search snippets in desktop and mobile layouts before publishing.

MIME Type Lookup

Look up MIME types by file extension or content type.

Meta Tag Length 检测器

Visually simulate your Google search snippet truncation limits.

Meta Description 生成器

Generate click-worthy meta descriptions with clean SERP-safe lengths.

Open Graph Card 生成器

Design social share cards and export ready-to-paste OG and Twitter tags.

Canonical URL 检测器

Inspect live canonical tags, final URLs, and metadata alignment in one pass.

Canonical Tag Generator

Generate clean rel=canonical tags for preferred URLs and duplicate-page control.

Hreflang Tag Generator

Generate alternate-language hreflang tags for international SEO and locale mapping.

Meta Robots Generator

Build robots and googlebot meta tags for indexing, snippet, and crawl-control directives.

Redirect Rule Generator

Generate Apache, Nginx, or CSV redirect rules for migrations, slug changes, and cleanup.

Schema Markup Validator

Validate JSON-LD schema markup syntax and catch common field issues before publishing.

Sitemap 验证器

Validate sitemap.xml files, detect duplicates, and surface structural issues fast.

Internal 链接 分析器

Crawl a page’s anchor tags to review internal links, external links, and nofollow usage.

UTM 链接 检查器

Parse campaign URLs and catch missing or messy UTM parameters before launch.

Domain Age 检测器

Look up RDAP registration data to estimate domain age, registrar, and expiry dates.

Google Ads 生成器

Generate proven high-CTR headlines and descriptions for Google Ads.

Placeholder 图片

Generate placeholder images of any size, color, and format.

FAQ Schema Markup 生成器

Build valid JSON-LD structure data for Search Engine Rich Snippets.

Google SERP Previewer

Visually preview and test Desktop Google Search Results lengths.

Keyword Clustering Tool

Group related keywords into practical topic clusters for SEO planning and content mapping.

Keyword Intent Classifier

Label keywords by likely informational, commercial, transactional, or navigational intent.

Content Brief Generator

Generate lightweight content briefs with title ideas, outlines, and FAQ prompts from a target keyword.

People Also Ask Generator

Generate People Also Ask-style question sets from a target keyword for research and content planning.

TF-IDF Content Analyzer

Analyze content against a target term with a practical V1 term-frequency signal.

Broken Link Checker

Classify URLs by likely healthy, redirecting, or broken status for quick SEO triage.

Hreflang Validator

Validate hreflang code syntax for international SEO workflows and multilingual pages.

Redirect Map Generator

Normalize old and new URL paths for migrations, redirect planning, and content restructures.

安全

16 个工具

密码 Strength Check

Analyze password security with entropy and complexity scoring.

Mnemonic 生成器

Generate secure BIP39-compatible mnemonic recovery phrases.

RSA Key 生成器

Generate secure public and private RSA key pairs locally.

MAC Address 生成器

Generate random Media Access Control (MAC) addresses instantly.

文本 Obfuscator

Obfuscate text using various encoding and transformation methods.

密码生成器

生成安全密码。

哈希生成器

生成MD5、SHA等哈希。

UUID生成器

生成唯一标识符。

HMAC 生成器

Generate HMAC signatures using various hash algorithms.

随机 数字 生成器

Generate random numbers, dice rolls, and coin flips.

随机 String 生成器

Generate cryptographically secure random strings for API keys, tokens, and test data.

加密工具

加密和解密文本。

Bcrypt生成器

生成Bcrypt哈希。

TOTP 代码 生成器

Generate time-based one-time passwords for 2FA testing.

Steganography 工具

Hide secret messages inside PNG images using LSB steganography, or decode hidden messages from images.

文件 Hash 检测器

Compute MD5, SHA-1, SHA-256, and SHA-512 hashes for any file. Compare against a known hash to verify integrity.

社交媒体

25 个工具

YouTube 标题 CTR 测试器

Analyze your video titles for power words, length, and CTR potential.

TikTok Viral Hook 生成器

Generate high-retention opening hooks for Short-form video.

YouTube Thumbnail Grabber

Extract high-resolution video covers instantly.

YouTube Transcript 提取器

Extract a clean, AI-ready transcript from any YouTube video URL instantly.

Instagram Caption Pro

Fix spacing & line break issues for IG captions.

Instagram 网格 分割器

Slice a large panoramic image into 9 perfect squares.

TikTok Caption 计数器

Track character limits and hashtag counts for TikTok.

X Thread 制作器

Split long text into numbered tweets automatically.

Twitch Alias Forge

Generate creative gaming usernames for streaming.

Tweet Intent 生成器

Create shareable Twitter links with pre-filled text.

Social Post Previewer

Preview one post across X, LinkedIn, Facebook, and Instagram-style layouts.

LinkedIn Rich 文本 Stylizer

Add bold and italic text to your LinkedIn posts.

Auto-Caption 格式化工具

Break sentences into 3-word chunks for viral Short-form videos.

Creator Revenue 计算器

Estimate your true Patreon and Substack revenue after platform fees.

Discord Timestamp 生成器

Generate localized, dynamic Markdown time syntax for Discord chats.

YouTube Idea Slot 机器

Generate massive viral hooks by combining proven psychological triggers.

Instagram Line Break 工具

Fix invisible line break formatting issues in Instagram captions and bios.

LinkedIn Bold 文本 格式化工具

Format LinkedIn posts with bold and italic Unicode text to stand out in the feed.

TikTok Character 计数器

Count characters, hashtags, and mentions against TikTok caption limits in real time.

Tweet 链接 生成器

Generate pre-filled Twitter/X share links with custom text, mentions, and hashtags.

Twitch Username 生成器

Generate creative gaming and streaming usernames with prefixes, suffixes, and styles.

Twitter Thread 分割器

Split long text into numbered tweet-sized chunks with character count tracking.

YouTube Thumbnail 下载器

Download YouTube video thumbnails in all available resolutions from any video URL.

Instagram Bio Generator

Generate creative Instagram bios for different niches including creative, business, fitness, lifestyle.

TikTok Username Generator

Generate creative TikTok usernames in multiple styles including trendy, gaming, creative, music.

文本

30 个工具

Emoji Search & Copy

Find and copy any emoji instantly from a organized search grid.

Bionic Reading 文本

Enhance reading speed by highlighting fixation points in text.

Bubble 文本 生成器

Convert normal text into ⓐⓔⓢⓣⓗⓔⓣⓘⓒ bubble and block styles.

Morse 代码 转换器

Convert text to Morse code signals and vice versa.

字数统计器

统计字数和字符。

Lorem Ipsum 生成器

Generate placeholder text in paragraphs, sentences, or words.

Case 转换器

Convert text between UPPER, lower, Title, Sentence, and more.

Markdown to HTML

Convert Markdown to clean HTML with live preview.

Duplicate Line 删除器

Remove duplicate lines from your text instantly.

Slug生成器

创建URL Slug。

文本 Reverser

Reverse text by characters, words, or lines.

Find & Replace

Find and replace text with regex support and match highlighting.

文本 to Binary

Convert text to binary, hex, octal, and decimal representations.

Line 排序器

Sort lines alphabetically, numerically, by length, or randomly.

Character Frequency

Analyze the frequency of characters inside any text block.

Fancy Font 生成器

Convert text to mathematical bold serif display characters.

Cursive 文本 生成器

Convert normal text into script and cursive unicode characters.

Upside Down 文本

Flip your text upside down instantly to mock your friends.

Vaporwave 文本 生成器

Convert standard text into full-width aesthetic vaporwave text.

Braille 翻译器

Translate English text to Grade 1 Braille and vice versa.

Emoji 翻译器

Automatically substitute keywords in text with matching emojis.

文本 Cleaner

Remove annoying line breaks and redundant whitespaces from text.

Y2K Aesthetic 文本 生成器

Convert plain text into sparkly, bracketed, vaporwave 2000s text.

Kaomoji / Lenny Faces

Quickly find and copy famous ASCII text Lenny faces and Kaomoji.

ASCII Block 文本 生成器

Convert normal text into massive ASCII block art formats.

Zalgo Glitch 文本 生成器

Create cursed, glitched text to copy and paste anywhere.

NATO Phonetic Alphabet

Convert any text to NATO phonetic alphabet (Alpha, Bravo, Charlie...). Covers A-Z, digits, and punctuation.

Wingdings 翻译器

Convert text to Wingdings symbols and back. See the full character mapping table.

Pig Latin 转换器

Translate any English text to Pig Latin with proper consonant cluster rules and capitalization handling.

Dictionary Lookup

Find word definitions, phonetics, example usage, and pronunciations instantly.

时间

12 个工具

Days Between Dates

Calculate the exact number of days, weeks, and months between two dates.

时间 Duration 计算器

Find the hours and minutes between a start and end time.

Day/日期 Math 计算器

Add or subtract days, weeks, and months from a specific date.

Leap Year 检测器

Check if a year is a leap year and find out when the next ones are.

在线 Stopwatch

A precise lap stopwatch with millisecond accuracy.

Countdown 计时器

Live countdown timer to a specific date and time.

日期 Difference 计算器

Calculate the exact difference between two dates.

时间 Zone 转换器

Visual comparison of global times and zones.

Public Holiday Checker

Find all public holidays for any country and year with dates and holiday types.

Sunrise & Sunset Times

Find sunrise, sunset, and total day length for any location based on date and coordinates.

Holiday Countdown

Count down the days, hours, minutes, and seconds until any major holiday or custom date.

Weather Lookup

Get real-time weather, temperature, wind speed, humidity, and visibility for any location.

写作

17 个工具

Read 时间 计算器

Estimate article reading time, speaking time, and live text stats.

单词 Frequency 分析器

Find the most repeated words in any text with live frequency charts.

Rhyming Dictionary

Find perfect rhymes for writing poetry or lyrics.

Essay Typer

Mash your keyboard to produce a perfect academic essay.

AI Prompt 生成器

Roll randomized art styles to use in Midjourney or DALL-E.

Readability 分析器

Calculate Flesch-Kincaid reading ease and target grade levels.

Syllable 计数器

Count syllables per word for writing haikus or structured poetry.

Simple Paraphraser

Swap basic English attributes and adjectives with synonyms.

Grammar & Typo 检测器

Quickly scan for standard and notorious spelling mistakes.

Corporate Jargon 解码器

Translate annoying passive-aggressive corporate speak into plain English.

文本 Summary / TL;DR

Summarize long text into fast bullet points or a short paragraph.

Grammar & Style Fixer

Clean up rough drafts, obvious typos, and awkward phrasing instantly.

Sentence Length 分析器

Analyze sentence rhythm, pacing, and readability by sentence length.

Acronym Explainer

Detect acronyms in text and explain common business, marketing, and tech terms.

随机 Poem 生成器

Generate random poems in various styles including haiku, limerick, and free verse.

Story Plot 生成器

Generate random story plots with characters, settings, and conflicts for creative writing.

抄袭检查器

检查抄袭。