Free Developer Tools
Fast, simple, and powerful online tools for developers. No login required.
Showing all 51 tools
JSON Formatter
Format, validate, and beautify your JSON data instantly. Supports nested objects, arrays, and provides clear syntax highlighting.
JSON ToolsJSON Validator
Validate JSON data to ensure it is syntactically correct. Instantly highlights errors and shows exactly where your JSON is malformed.
JSON ToolsJSON Minifier
Minify JSON data by removing whitespace, newlines, and comments to reduce payload size for APIs and storage.
JSON ToolsJSON Diff
Compare two JSON objects side-by-side with full syntax highlighting.
JSON ToolsAPI Tester
A postman-like HTTP client to test REST APIs, send requests, and inspect responses.
Web & NetworkingBase64 Encoder
Encode any string or text to Base64 format instantly. Useful for encoding images, credentials, and binary data for APIs.
Encoding ToolsBase64 Decoder
Decode Base64 encoded strings back to plain readable text. Supports standard and URL-safe Base64 encoding variants.
Encoding ToolsURL Encoder
Encode strings to be safely used in URLs by escaping special characters. Essential for building query parameters and REST API calls.
Encoding ToolsURL Decoder
Decode URL-encoded strings (percent-encoded) back to human-readable text. Great for debugging query parameters and API requests.
Encoding ToolsJWT Decoder
Decode and inspect JSON Web Tokens (JWT) — view header, payload, and verify the expiry without any server-side code.
Encoding ToolsUUID Generator
Generate universally unique identifiers (UUID v4).
Generator ToolsQR Code Generator
Generate QR codes from URLs or text with custom colors and sizes.
Generator ToolsLorem Ipsum Generator
Generate dummy text for your layouts and mockups.
Generator ToolsSlug Generator
Convert strings into URL-friendly slugs.
Generator ToolsRandom String Generator
Generate random strings of any length and character set.
Generator ToolsPassword Generator
Create secure, strong, and random passwords with customizable length and character sets including symbols, numbers, and mixed case.
Security ToolsHash Generator
Generate cryptographic hashes — SHA-1, SHA-256, SHA-384, SHA-512 — from any input text. Runs entirely in your browser.
Security ToolsWord Counter
Count words, characters, sentences, and paragraphs in your text. Useful for essays, blog posts, and content with word limits.
Text ToolsCase Converter
Convert text between uppercase, lowercase, camelCase, snake_case, PascalCase, and more with a single click.
Text ToolsMarkdown Preview
Write and preview Markdown in real-time with a live rendered side-by-side view. Supports GitHub-flavored Markdown.
Text ToolsDiff Checker
Compare two text snippets and highlight line-by-line differences. Great for reviewing code changes, config files, and document revisions.
Text ToolsText to Binary
Convert any text string into binary code (0s and 1s). Shows the binary representation of every character in your input.
Text ToolsBinary to Text
Convert binary code (0s and 1s) back into readable ASCII text. Supports space-separated and continuous binary strings.
Text ToolsURL Parser
Parse URLs to extract protocol, domain, port, and query parameters.
Text ToolsHTML Formatter
Format, beautify, and minify HTML code.
HTML ToolsHTML Preview
Write HTML and see a live rendered preview side by side.
HTML ToolsHTML Escaper
Escape and unescape HTML entities like < > &.
HTML ToolsColor Palette
Browse color scheme presets and copy CSS variables.
HTML ToolsCSS Formatter
Format, beautify, and minify CSS stylesheets.
CSS ToolsGradient Generator
Create beautiful linear, radial, and conic CSS gradients.
CSS ToolsJavaScript Beautifier
Format and beautify JavaScript and TypeScript code.
JavaScript ToolsRegex Tester
Test and debug regular expressions with real-time matching.
Regex ToolsTimestamp Converter
Convert Unix timestamps to human-readable dates and vice versa.
Date ToolsDevice Mockup Generator
Wrap your screenshots and app designs in beautiful device frames like iPhones, MacBooks, and more.
Image ToolsColor Picker
Pick colors and convert between HEX, RGB, and HSL.
Image ToolsMongoDB Schema Generator
Generate Mongoose schemas from JSON objects.
Database ToolsPrisma Schema Generator
Generate Prisma schemas for PostgreSQL/MySQL from JSON objects.
Database ToolsSQL Table Generator
Generate standard SQL CREATE TABLE statements from JSON objects.
Database ToolsSQL Diff
Compare two SQL queries or schemas side-by-side with full syntax highlighting.
Database ToolsJSON to Dart Model
Generate Flutter/Dart models with fromJson and toJson from JSON.
Code GeneratorsMerge PDF
Combine multiple PDF files into one easily. Fast, secure, and free online PDF combiner.
PDF ToolsSplit PDF
Split PDF files into individual pages or extract specific page ranges.
PDF ToolsCompress PDF
Reduce the file size of your PDF documents while maintaining quality.
PDF ToolsPDF to Word
Convert PDF files to editable Word documents (DOCX).
PDF ToolsWord to PDF
Convert Word documents (DOCX, DOC) to PDF format.
PDF ToolsPDF to JPG
Extract images from PDF files or convert each page to a JPG image.
PDF ToolsJPG to PDF
Convert JPG, PNG, and other images to PDF.
PDF ToolsPDF to Excel
Convert PDF data and tables to Excel spreadsheets (XLSX).
PDF ToolsExcel to PDF
Convert Excel spreadsheets (XLSX, XLS) to PDF.
PDF ToolsPDF to PowerPoint
Convert PDF presentations to editable PowerPoint (PPTX) format.
PDF ToolsPowerPoint to PDF
Convert PowerPoint presentations (PPTX, PPT) to PDF format.
PDF Tools