🛠️ Free Tools
All tools run in your browser. No data sent to any server. No sign-up needed.
Diff Checker — Compare Two Texts
Compare two blocks of text and see the differences highlighted line by line. Free, browser-based, no data sent anywhere.
Free .env Diff Checker
Compare two .env files side by side. Find missing, added, and changed variables instantly. Runs in your browser — nothing leaves your machine.
Free .env File Validator
Validate your .env files, check for common issues, compare .env with .env.example, and generate TypeScript types. Runs in your browser.
Free .gitignore Generator
Generate a .gitignore file for your project. Select your tech stack and get a ready-to-use .gitignore. Runs in your browser.
Free AI Color Palette Generator
Generate beautiful color palettes instantly. Click to copy hex codes. No sign-up, runs in your browser.
Free AI Token Counter
Count tokens for GPT, Claude, Gemini, and other AI models. See estimated cost instantly. Runs in your browser — your text stays private.
Free Aspect Ratio Calculator
Calculate dimensions for any aspect ratio. Enter width or height and get the matching dimension for 16:9, 4:3, 1:1, and custom ratios. Runs in your browser.
Free Base64 Encoder / Decoder
Encode and decode Base64 strings instantly. Supports text and data URLs. Runs in your browser — your data never leaves your device.
Free Border Radius Previewer
Visually adjust border-radius for each corner and copy the CSS. Drag sliders or type values. Runs in your browser.
Free Byte Converter (KB, MB, GB, TB)
Convert between bytes, KB, MB, GB, and TB. Supports both 1000 (SI) and 1024 (binary) bases. Runs in your browser.
Free chmod Calculator
Calculate Linux file permissions visually. Convert between symbolic (rwxr-xr-x) and numeric (755) notation. Runs in your browser.
Free Code Screenshot Generator
Turn code snippets into beautiful images. Pick theme, language, padding, and font size — download as PNG. Runs in your browser, no sign-up.
Free Color Converter (HEX, RGB, HSL)
Convert colors between HEX, RGB, and HSL formats instantly. Pick a color visually or paste a value. Runs in your browser.
Free CORS Header Builder
Generate correct CORS headers for Express, Next.js, Nginx, and Cloudflare Workers. Pick your origin, methods, and headers — get working config. Runs in your browser.
Free Cron Expression Builder
Build and understand cron expressions visually. See the next run times, get a human-readable description, and copy the expression. No sign-up needed.
Free Cron Expression Explainer
Paste a cron expression and see exactly when it runs in plain English. Shows the next 10 execution times. Runs in your browser.
Free CSP Header Builder
Build a Content-Security-Policy header visually. Pick sources for scripts, styles, images, and more — get a ready-to-use CSP header. Runs in your browser.
Free CSS Box Model Visualizer
Input margin, padding, border, and dimensions — see the CSS box model rendered live. Understand how spacing works. Runs in your browser.
Free CSS Box Shadow Generator
Design CSS box shadows visually with live preview. Adjust blur, spread, offset, color, and opacity. Copy the CSS instantly. No sign-up required.
Free CSS Flexbox Playground
Visual CSS Flexbox builder. Toggle flex properties and see the result in real time. Copy the CSS when you're done. Runs in your browser.
Free CSS Gradient Generator
Create beautiful CSS gradients visually. Adjust colors, angle, and type — then copy the CSS. No sign-up needed.
Free CSS Grid Generator
Visual CSS Grid builder. Define rows, columns, and gaps — see the layout live and copy the CSS. Runs in your browser.
Free CSS Minifier & Beautifier
Minify CSS to reduce file size or beautify compressed CSS for readability. Runs in your browser — nothing is sent to a server.
Free CSV ↔ JSON Converter
Convert CSV to JSON array or JSON array to CSV. Paste your data and get instant output. Runs in your browser — nothing leaves your machine.
Free cURL to Fetch Converter
Paste a cURL command and get the equivalent JavaScript fetch code. Handles headers, POST body, auth, and more. Runs in your browser.
Free Docker Compose Validator
Paste your docker-compose.yml and get instant validation: duplicate ports, missing depends_on, deprecated syntax, and more. Runs in your browser.
Free Dockerfile Generator
Generate a production-ready Dockerfile for Node.js, Python, Go, or static sites. Pick your stack, get a multi-stage optimized Dockerfile. Runs in your browser.
Free Dockerfile Linter
Paste your Dockerfile and get instant best-practice warnings. Catches common mistakes like running as root, missing .dockerignore, no multi-stage builds, and more. Runs in your browser.
Free ESLint Config Builder
Build your ESLint config visually. Pick framework, rules, and style — get a ready-to-use eslint.config.js (flat config). Runs in your browser.
Free Fake Data Generator for Developers
Generate realistic fake data: names, emails, addresses, UUIDs, dates, phone numbers, and more. Copy as JSON or CSV. Runs in your browser.
Free Favicon Generator
Generate favicons from text, emoji, or initials. Download as ICO, PNG, and SVG. Preview in a browser tab. Runs in your browser.
Free Git Command Builder
Pick what you want to do in Git and get the exact command. Undo commits, squash, rebase, cherry-pick, stash, and more. No more googling Git syntax.
Free Git Diff Viewer
Paste two code blocks and see a side-by-side diff with syntax highlighting. Compare code changes instantly in your browser.
Free GitHub Actions YAML Linter
Paste your GitHub Actions workflow and get instant validation. Catches invalid triggers, missing runs-on, bad syntax, and common mistakes. Runs in your browser.
Free HTML Entity Encoder & Decoder
Encode text to HTML entities or decode HTML entities back to text. Handles named entities, numeric codes, and special characters. No sign-up required.
Free HTTP Header Analyzer
Inspect HTTP response headers from any URL. Check security headers, caching, CORS, and more. Runs in your browser.
Free JavaScript Minifier & Beautifier
Minify JavaScript to reduce file size or beautify compressed code for readability. Runs in your browser — nothing is sent to a server.
Free JSON Formatter & Validator
Paste any JSON and instantly format, validate, and minify it — right in your browser. No data sent anywhere.
Free JSON Key Sorter
Sort JSON object keys alphabetically. Paste messy JSON and get consistently ordered output. Great for comparing configs. Runs in your browser.
Free JSON Path Finder & Tester
Test JSONPath expressions against your JSON data. Visualize the JSON tree and extract values. Runs in your browser.
Free JSON to TypeScript Converter
Paste JSON and instantly get TypeScript interfaces. Handles nested objects, arrays, and optional fields. Runs in your browser.
Free JSON to YAML Converter
Convert JSON to YAML and YAML to JSON instantly. Runs in your browser — nothing is sent to a server.
Free JWT Decoder
Paste a JSON Web Token and instantly see the header, payload, and expiration. Check if it's expired. Runs in your browser — your token never leaves your device.
Free Lorem Ipsum Generator
Generate placeholder text in multiple styles — classic Lorem Ipsum, hipster, pirate, or plain English. Copy with one click.
Free Markdown Preview
Write Markdown and see it rendered in real-time. Supports headings, lists, code blocks, links, and more.
Free Markdown Table Generator
Create markdown tables visually. Set rows and columns, fill in data, and copy the formatted markdown. No more hand-aligning pipes. No sign-up required.
Free Markdown to HTML Converter
Convert Markdown to HTML instantly. Supports headings, lists, code blocks, links, images, tables, and more. Runs in your browser.
Free Meta Tag Generator
Generate HTML meta tags for SEO, Open Graph (Facebook), and Twitter Cards. Preview how your page will look in search results and social media.
Free Nginx Config Generator
Generate Nginx config blocks for reverse proxy, static sites, SSL redirect, rate limiting, and more. Pick your setup, get working config. Runs in your browser.
Free Number Base Converter
Convert between decimal, hexadecimal, binary, and octal. Type in any base and see all others update instantly. Runs in your browser.
Free package.json Analyzer
Paste your package.json and get instant insights: dependency count, potential issues, outdated patterns, and optimization tips. Runs in your browser.
Free Placeholder Image Generator
Generate placeholder images with custom size, color, and text. Download as PNG or copy as data URI. Runs in your browser.
Free Prettier Config Builder
Build your .prettierrc visually. Pick tab width, semicolons, quotes, trailing commas, and more — get a ready-to-use config file. Runs in your browser.
Free px ↔ rem Converter
Convert between px and rem values instantly. Set your base font size and convert single values or entire CSS blocks. Runs in your browser.
Free QR Code Generator
Generate QR codes from any text, URL, or data. Download as PNG or SVG. Runs entirely in your browser — nothing is sent to a server.
Free Regex Explainer & Tester
Paste a regex pattern and see what each part means in plain English. Test it against your strings in real-time. Runs in your browser.
Free Regex Step-Through Debugger
Paste a regex and test string, then step through the matching process character by character. See exactly how the regex engine works. Runs in your browser.
Free Regex Tester & Explainer
Test regular expressions against your text with real-time highlighting. See matches instantly in your browser.
Free Responsive Breakpoint Visualizer
Visualize your CSS breakpoints. Enter your breakpoint values and see exactly what width ranges each covers. Spot gaps and overlaps instantly.
Free robots.txt Generator
Generate a robots.txt file for your website. Pick your framework, set rules for crawlers, and copy the file. Runs in your browser.
Free SQL Formatter & Beautifier
Format and beautify messy SQL queries instantly. Supports SELECT, INSERT, UPDATE, CREATE TABLE, and more. Runs in your browser.
Free SQL to Prisma/Drizzle Schema Converter
Paste CREATE TABLE SQL and get Prisma or Drizzle ORM schema output. Supports common column types, primary keys, defaults, and nullable fields. Runs in your browser.
Free SSH Config Generator
Generate SSH config blocks for your servers. Fill in host, user, key path, and options — get a ready-to-paste ~/.ssh/config entry. Runs in your browser.
Free SSL Certificate Decoder
Paste a PEM certificate and see issuer, subject, expiry, SANs, and more. Check if your cert is valid. Runs in your browser — nothing leaves your machine.
Free String Escape & Unescape Tool
Escape and unescape strings for JSON, HTML, URL, regex, and SQL. Paste your string and pick the format. Runs in your browser.
Free Subnet Calculator
Calculate IP ranges, subnet masks, and host counts from CIDR notation. Paste a CIDR block and get full network details. Runs in your browser.
Free SVG to CSS Background Converter
Convert SVG code to a CSS background-image data URI. Paste SVG, get CSS. Runs in your browser.
Free Tailwind to CSS Converter
Paste Tailwind CSS classes and see the raw CSS output. Understand what each utility class does. Runs in your browser.
Free Text Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, PascalCase, and CONSTANT_CASE. No sign-up required.
Free TSConfig Builder
Build your tsconfig.json visually. Pick target, module, strictness, and paths — get a ready-to-use TypeScript config. Runs in your browser.
Free URL Encoder & Decoder
Encode or decode URLs and query strings instantly. Handles special characters, UTF-8, and full URLs.
Free UUID Generator
Generate UUIDs (v4) instantly. Copy single or bulk UUIDs. Runs entirely in your browser — nothing is sent to a server.
Free Word & Character Counter
Count words, characters, sentences, paragraphs, and reading time. Runs in your browser — nothing is sent to a server.
Hash Generator (MD5, SHA-1, SHA-256, SHA-512)
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text. Runs entirely in your browser using the Web Crypto API.
HTTP Status Code Reference
Interactive HTTP status code reference. Search and filter all status codes with descriptions and when to use each one. Runs in your browser.
Password Generator
Generate secure, random passwords with customizable length and character options. Runs entirely in your browser — nothing is sent to a server.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds. Free browser tool.
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