intermediate
86 tools with this tag
HTML Formatter
Format, beautify, and auto-indent ugly or minified HTML code.
DeveloperHTML Minifier
Minify and compress your HTML code to save file size and boost load speeds.
DeveloperCSS Formatter
Beautify nested and unformatted CSS code blocks securely.
DeveloperJSON Validator & Formatter
Validate syntax, catch errors, and auto-indent complex JSON payloads.
DataBase64 to Image Decoder
Instantly view and download the image behind a raw Base64 string.
DataImage to Base64 Encoder
Convert generic files (.png, .jpg, .svg) into Base64 URLs.
DataOne Rep Max (1RM)
Find out your theoretical 1-rep max and lifting percentages.
HealthIncome Tax Calculator
Estimate federal income tax brackets and net take-home pay.
FinanceRetirement Calculator
Project 401k savings and compound interest for retirement.
FinanceInflation Calculator
Measure the historical or projected purchasing power of money.
FinanceSaaS Churn Calculator
Calculate customer churn rate and projected user numbers.
FinanceRent vs Buy Calculator
Compare the long term costs of renting vs owning a home.
FinanceFIRE Retirement Calculator
Calculate your exact Financial Independence, Retire Early number.
FinanceCrypto Profit Calculator
Track crypto gains, trading fees, and total net ROI.
FinanceCAGR Calculator
Find the Compound Annual Growth Rate of an investment.
FinanceCron Job Generator
Generate and translate crontab expressions with a visual GUI.
NetworkcURL to Fetch Converter
Convert raw cURL shell commands into JavaScript Fetch or Axios requests.
NetworkcURL Builder
Visually build cURL commands with headers, params, auth, and JSON bodies.
NetworkAPI Explorer
Send live HTTP requests with custom headers, params, and request bodies.
NetworkSitemap Extractor
Fetch and list URLs from a live sitemap.xml file or sitemap index.
SEOrobots.txt Validator
Fetch or paste a robots.txt file and validate the core crawler directives.
SEOJSON Diff Visualizer
Compare two JSON objects and inspect structural changes path by path.
DataRegex Explain Tool
Turn regular expressions into plain-English explanations for faster debugging.
DeveloperWebhook Tester
Fire signed webhook payloads at any endpoint and inspect the response.
NetworkSQL Query Runner
Run practical SQL queries against an in-browser CSV-backed table.
DataJSON Schema Generator
Generate draft 2020-12 JSON Schema documents from sample JSON.
Data.env File Validator
Audit, validate, and alphabetically sort your environment variables safely.
DataSVG to JSX Converter
Convert raw SVG code into a React JSX component instantly.
DeveloperXML Formatter
Format, validate and prettify raw XML documents.
DataJSON Formatter
Format, minify, and validate JSON data instantly.
DataRegex Tester
Test and debug regular expressions with live match highlighting.
DeveloperCSS Minifier/Beautifier
Minify or beautify your CSS code with one click.
DeveloperJS Minifier
Minify JavaScript code by removing whitespace and comments.
DeveloperSQL Formatter
Format and beautify SQL queries for readability.
DataTailwind UI Visualizer
Paste Tailwind HTML and view a sandboxed live preview instantly.
DeveloperReact to Vue Converter
Convert functional React components to Vue 3 Composition API.
DeveloperExtension Manifest Builder
Visually scaffold Chrome Extension MV3 manifest.json files.
DeveloperWord Frequency Analyzer
Find the most repeated words in any text with live frequency charts.
WritingText Obfuscator
Obfuscate text using various encoding and transformation methods.
SecurityHash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text.
SecurityEncryption Tool
Encrypt and decrypt text using AES symmetric encryption.
SecurityBcrypt Hash Generator
Generate bcrypt password hashes with configurable rounds.
SecurityTOTP Code Generator
Generate time-based one-time passwords for 2FA testing.
SecuritySitemap Generator
Generate XML sitemaps for better search engine indexing.
SEOHTTP Status Code Checker
Bulk-check live URLs for 200, 301, 404, 500, and other status codes.
NetworkRedirect Checker
Trace redirect chains and find final destination URLs for migrations and SEO audits.
NetworkCanonical URL Checker
Inspect live canonical tags, final URLs, and metadata alignment in one pass.
SEOSitemap Validator
Validate sitemap.xml files, detect duplicates, and surface structural issues fast.
SEOInternal Link Analyzer
Crawl a page’s anchor tags to review internal links, external links, and nofollow usage.
SEONumber Base Converter
Convert numbers between binary, octal, decimal, and hex.
DataUnix Timestamp Converter
Convert Unix timestamps to human-readable dates and back.
DataFAQ Schema Markup Generator
Build valid JSON-LD structure data for Search Engine Rich Snippets.
SEOPDF Compare
Compare two PDFs locally by hash, metadata, page dimensions, and form fields.
DeveloperFillable PDF Form Creator
Create a browser-generated fillable PDF with text fields, dropdowns, and checkboxes.
DeveloperImage Color Palette Extractor
Upload an image and extract its dominant color palette using k-means clustering.
ColorColor Blindness Simulator
Preview how an uploaded image may appear for protanopia, deuteranopia, tritanopia, and achromatopsia.
ImageSVG Optimizer & Minifier
Minify SVG code, strip comments, reduce whitespace, and download the optimized file.
DeveloperChmod Calculator
Calculate Unix file permission values by toggling read, write, and execute bits visually.
DeveloperCompound Interest Visualizer
Project compound growth with recurring contributions, milestones, and inflation-adjusted value.
FinanceAmazon Fee Calculator
Estimate Amazon referral fees, FBA costs, ad spend, and net profit per unit.
FinanceLatency Cost Calculator
Estimate how much page speed improvements could recover in revenue and profit.
FinanceLead Value Calculator
Turn traffic, conversion rates, and deal value into a real per-lead and per-visitor number.
FinanceCSS Flexbox Generator
Visually build CSS Flexbox layouts with live preview and generated code output.
DeveloperWeighted Decision Matrix
Score and compare options against weighted criteria to make better decisions.
ProductivityExpense Ratio Impact Calculator
Compare how different fund expense ratios eat into your long-term investment returns.
FinanceCommon Regex Patterns
Browse and copy common regex patterns for email, URL, phone, date, and more.
DeveloperStartup Runway Calculator
Calculate how many months of runway your startup has based on cash, burn, and growth.
FinanceSudoku
Classic number puzzle game. Fill the grid with digits 1-9.
GamesNonogram
Solve logic puzzles to reveal a hidden picture.
GamesCSS Grid Generator
Visually build CSS Grid layouts and generate production-ready code.
DeveloperKey Compatibility Checker
Check how compatible two musical keys are for mashups or modulation. See shared chords and pivot points.
MusicLoot Table Simulator
Build a loot table with weighted items and simulate hundreds of rolls to see drop rates.
GamingRPG Damage Calculator
Calculate min, max, and average damage for any RPG build — includes crit multiplier, resistance, and DPS.
GamingBattle Simulator
Set up two fighters with stats and simulate turn-based combat. Run 100 battles to see win percentages.
GamingHex Grid Generator
Generate interactive hex grids for tabletop RPG maps. Click to fill hexes and add labels.
GamingUnicode Inspector
Paste any text and inspect each character's Unicode codepoint, name, decimal, hex, and HTML entity.
DataDNS Lookup
Look up DNS records for any domain. Supports A, AAAA, MX, TXT, CNAME, NS, and SOA records.
NetworkSSL Certificate Checker
Check SSL certificate details for any domain — issuer, expiry date, and days remaining.
NetworkCSS Clip-Path Generator
Generate CSS clip-path polygon values with visual presets. See a live preview and copy the CSS.
DeveloperColor Temperature Converter
Convert Kelvin color temperature to RGB and HEX. Reference chart for candles, tungsten, daylight, and more.
ColorFake Dataset Generator
Generate realistic fake CSV datasets with names, emails, phones, dates, salaries, and more.
DataVisual Regex Tester
Test regular expressions with live highlighted matches. See match groups and use common regex snippets.
DeveloperCron Next Run Calculator
Enter a cron expression and see the next 10 scheduled run times with a human-readable description.
NetworkDeep Link Generator
Build App Store and Play Store deep links with UTM parameters. Generates a QR code automatically.
NetworkFile Hash Checker
Compute MD5, SHA-1, SHA-256, and SHA-512 hashes for any file. Compare against a known hash to verify integrity.
SecurityText Diff Merger
Compare two text blocks line by line. See added, removed, and unchanged lines highlighted with stats.
Developer