Developer Tools
68 free online developer tools — 100% browser-based.
Developer tool comparison
Compare EaziApps with IT-Tools for developer utilities, tool breadth, browser processing, and self-hosting.
Color Picker
Pick colors and convert between HEX, RGB, HSL formats instantly. Copy color codes with one click. Free online tool.
DeveloperFile Hash
Generate MD5, SHA-1, SHA-256 checksums from files in your browser. Verify file integrity without uploading. Free and private.
DeveloperBase64 Encoder
Encode and decode Base64 strings instantly. Supports text and file input. Free online tool, no upload, runs in your browser.
DeveloperText Case Converter
Convert text between UPPER, lower, Title, camelCase, snake_case, and more. Free online tool with one-click copy.
DeveloperUUID Generator
Generate version 4 UUIDs instantly. Create 1 to 100 UUIDs at once with one-click copy. Free, runs in your browser.
DeveloperURL Encoder/Decoder
Encode or decode URL strings and query parameters. Supports full URL and component encoding. Free online tool.
DeveloperLorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words for designs and mockups. Free, instant, customizable.
DeveloperJSON Formatter
Format, minify, and validate JSON with syntax highlighting and error detection. Free online tool, no upload needed.
DeveloperSlug Generator
Convert any text into a clean, URL-friendly slug. Handles special characters and Unicode. Free, instant, no signup.
DeveloperWord Counter
Count words, characters, sentences, paragraphs, and estimate reading time. Free online tool for writers and students.
DeveloperRegex Tester
Test and debug regular expressions with live match highlighting. Free online regex tool with flags and capture groups. No signup.
DeveloperCSS Gradient Generator
Create beautiful linear and radial CSS gradients with live preview. Add multiple color stops and copy-ready CSS. Free, no signup.
DeveloperText Diff Checker
Compare documents or text and see the exact words that changed. Paragraph alignment, focused review, and private browser processing.
DeveloperTimestamp Converter
Convert Unix timestamps to and from ISO dates, local time, and UTC. Free online tool with millisecond support. No signup needed.
DeveloperHex RGB HSL Converter
Convert between HEX, RGB, HSL, and other color formats instantly. Free online color converter with one-click copy. No signup.
DeveloperNumber Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal instantly. Free online base converter, no signup required.
DeveloperJSON to CSV Converter
Convert JSON to CSV and CSV to JSON instantly. Free online converter with auto-detection, no signup, no upload. Runs in your browser.
DeveloperJSON to YAML Converter
Convert JSON to YAML and YAML to JSON instantly. Free online converter with syntax highlighting, no signup, no upload needed.
DeveloperJWT Decoder
Decode JSON Web Tokens and inspect the header, payload, and signature. Free online JWT decoder, no upload, browser-based.
DeveloperHTTP Status Codes
Complete reference for every HTTP status code with descriptions and common uses. Free online lookup with search and categories.
DeveloperCron Expression Generator
Build and understand cron expressions with a visual field editor. Free online tool with human-readable descriptions. No signup.
DeveloperMeta Tag Generator
Generate SEO and social media meta tags for your web pages. Free online tool with copy-ready HTML. No signup, browser-based.
DeveloperURL Parser
Break down any URL into its protocol, host, path, query parameters, and hash. Free online URL parser, no signup required.
DeveloperCSS Box Shadow Generator
Create beautiful box shadows with live preview and copy-ready CSS. Layer multiple shadows with full control. Free, no signup.
DeveloperCSS Border Radius Generator
Create rounded corners with independent control over each corner. Live preview and copy-ready CSS. Free online tool, no signup.
DeveloperCSS Clip Path Generator
Pick from common clip-path shapes and copy the CSS instantly. Free online generator with circle, polygon, and inset presets.
DeveloperCSS Glassmorphism Generator
Create frosted glass effects with live preview and copy-ready CSS. Adjust blur, opacity, and border. Free online tool, no signup.
DeveloperIP Subnet Calculator
Calculate network, broadcast, mask, host range, and total addresses for any IPv4 CIDR. Free online tool, no signup required.
DeveloperWCAG Color Contrast Checker
Check if your color combinations meet WCAG AA and AAA accessibility standards. Free online checker with ratio display. No signup.
DeveloperSQL Formatter
Format and beautify SQL queries with proper indentation and uppercased keywords. Free online SQL formatter, no signup needed.
DeveloperHTML Entity Encoder
Encode and decode HTML entities like & < > and more. Free online tool with named and numeric entity support. No signup.
DeveloperChmod Calculator
Calculate Unix file permissions in octal and symbolic notation with a chmod command. Free online tool with visual toggles, no signup.
DevelopercURL to Fetch Converter
Convert curl commands to JavaScript fetch() and axios calls instantly. Free online converter with headers and body parsing. No signup.
DeveloperHTML Minifier
Minify or beautify HTML code by removing comments, whitespace, and formatting. Free online tool, no upload needed.
DeveloperCSS Minifier
Minify or beautify CSS code by removing comments and whitespace. Copy optimized code with one click. Free, no signup.
DeveloperCSS Filter Generator
Build CSS filter effects like blur, brightness, and contrast with live preview and copy-ready code. Free, no signup needed.
DeveloperCSS Neumorphism Generator
Build soft UI neumorphic shadows with live preview and copy-ready CSS. Adjust intensity, blur, and shape. Free online, no signup.
DeveloperCSS Triangle Generator
Create CSS triangles in 8 directions with live preview and copy-ready code. Customize size and color. Free online tool, no signup.
DeveloperBlob SVG Generator
Generate organic blob SVG shapes with live preview and copy-ready code. Customize size, complexity, and color. Free, no signup.
DeveloperNoise Texture Generator
Generate CSS noise textures as data URLs with live preview and copy-ready code. Customize grain and opacity. Free, no signup.
DeveloperSERP Preview
Preview how your page appears in Google search results with character and pixel warnings. Free online SERP simulator, no signup.
DeveloperUTM Builder
Build campaign tracking URLs with UTM source, medium, and campaign parameters. Free online URL builder, no signup, instant copy.
DeveloperURL Cleaner
Strip utm_, fbclid, gclid and other tracking parameters from any URL. Free online URL cleaner for cleaner links. No signup needed.
DeveloperRobots.txt Generator
Generate a valid robots.txt file with user-agent, allow, disallow and sitemap rules. Free online generator with copy-ready output.
DeveloperReadability Score
Calculate Flesch Reading Ease and Flesch-Kincaid grade level for any text. Free online readability analyzer, no signup, browser-based.
DeveloperROT13 & Caesar Cipher
Encode and decode text with ROT13 or a custom Caesar cipher shift (1-25). Free online tool, no signup, runs in your browser.
DeveloperBasic Auth Generator
Generate HTTP Basic Authorization headers, Base64 tokens, and curl snippets. Free online tool, no signup, runs in your browser.
DeveloperPassword Strength Checker
Analyze password strength with entropy scoring, crack time estimate, and warnings. Free online checker, no upload, browser-based.
DeveloperRSA Key Pair Generator
Generate 2048, 3072, or 4096-bit RSA key pairs in PEM format via WebCrypto. Free online tool, no upload, keys stay in your browser.
DeveloperTOTP Code Generator
Generate time-based one-time passwords (RFC 6238) from a Base32 secret with live countdown. Free online TOTP tool, browser-based.
DeveloperYAML Formatter
Format, validate, and beautify YAML with consistent indentation and error highlighting. Free online tool, no signup.
DeveloperXML Formatter
Format, beautify, and validate XML with proper indentation and syntax highlighting. Free online tool, no signup needed.
DeveloperMarkdown ↔ HTML
Convert Markdown to HTML and HTML back to Markdown instantly. Live preview with syntax highlighting. Free online tool.
DeveloperUser Agent Parser
Decode any User-Agent string into browser name, version, OS, and device type. Free online tool, instant results.
DeveloperJSON to TypeScript
Generate TypeScript interfaces from any JSON object automatically. Handles nested objects and arrays. Free, no signup.
DeveloperJSON to Go / Rust Struct
Convert JSON to Go struct (with json tags) or Rust struct (with serde). Handles nested types. Free, no signup.
DeveloperXML Sitemap Generator
Create a valid XML sitemap from a list of URLs in seconds. Free online tool with lastmod, priority, and changefreq. No signup.
DeveloperOpen Graph Tag Generator
Generate Open Graph and Twitter Card meta tags with live preview. Free online tool with copy-ready HTML code. No signup needed.
DeveloperKeyword Density Checker
Analyze keyword frequency and density in your text content. Free online SEO tool with word count and top phrases. No signup.
DeveloperMesh Gradient Generator
Create stunning CSS mesh gradients with multiple color stops. Free online generator with live preview and copy-ready code. No signup.
DeveloperCSS Keyframes Generator
Generate CSS keyframe animations with presets and live preview. Free online tool with copy-ready code. No signup, browser-based.
DeveloperCSS Flexbox Playground
Experiment with CSS Flexbox properties using an interactive live preview. Copy-ready code for any layout. Free online, no signup.
DeveloperCSS Grid Generator
Build responsive CSS Grid layouts visually with copy-ready code. Define rows, columns, and gaps. Free online tool, no signup.
DeveloperCSS Transform Playground
Visually build CSS transforms with sliders for rotate, scale, skew, and translate. Copy-ready code, free, no signup needed.
DeveloperWave SVG Generator
Generate smooth wave SVG dividers for page sections with custom colors. Copy-ready code for any website. Free online, no signup.
DeveloperBIP39 Mnemonic Generator
Generate and verify BIP39 recovery phrases with the official 2048-word list and SHA-256 checksum. Free online tool, browser-based, no signup.
DeveloperSSL Certificate Decoder
Decode basic fields from a PEM-formatted X.509 certificate. Free online tool, no upload. View expiry, issuer, and subject.
DeveloperJS Minifier / Beautifier
Minify or beautify JavaScript code instantly in your browser. Remove whitespace and comments. Free, no signup needed.
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