All tools 92 total
Every dev action, organized by what you want to do.
JSON Formatter
Beautify and format JSON with configurable indentation. Produces clean, readable output instantly.
JSON Validator
Validate JSON syntax and structure. Get precise error messages with line and column numbers.
JSON Minifier
Remove all whitespace from JSON to produce the smallest possible output for production use.
JSON Diff
Compare two JSON documents and highlight all differences between them.
JSON to YAML
Convert JSON to YAML format with proper indentation and structure.
JSON to CSV
Convert a JSON array of objects to CSV format ready for spreadsheet import.
JSON to XML
Convert JSON data to well-formed XML with proper element nesting.
JSON to TypeScript
Generate TypeScript interfaces from JSON data automatically.
JSON to Zod
Generate Zod schema definitions from JSON data for runtime validation.
JSON to Go Struct
Convert JSON to Go struct definitions with proper field tags.
JSON Schema Generator
Generate JSON Schema (Draft-07) from any JSON sample. Infers types, formats, required fields and nested objects automatically.
Ruby Hash to JSON
Convert Ruby hash syntax to formatted JSON. Supports hash rockets, symbol keys, modern labels, arrays and nested hashes.
Ruby Online Runner
Run Ruby code in your browser with stdout, stderr and runtime error output. Uses a client-side WASM Ruby runtime.
JavaScript Online Runner
Run JavaScript code in your browser with stdout, stderr and runtime error output. Uses a client-side Web Worker sandbox.
Python Online Runner
Run Python code in your browser with stdout, stderr and runtime error output. Uses a client-side Pyodide WASM runtime.
PHP Online Runner
Run PHP code in your browser with echo, print, var_dump, warnings and runtime error output. Uses a client-side PHP WASM runtime.
SQL Online Runner
Run SQLite SQL scripts in your browser and view SELECT, PRAGMA and query results as tables. Executes schema, seed data and queries client-side with SQLite WASM.
API Client
Organize API workspaces, folders and requests, resolve environments and inherited headers, run HTTP calls and inspect responses in the browser.
HTML CSS JS Live Preview
Write HTML, CSS and JavaScript in separate panes and see the rendered page update live in a sandboxed browser preview.
TOML Formatter
Format and normalize TOML configuration files with consistent indentation and structure.
TOML to JSON
Convert TOML configuration files to JSON format. Supports tables, arrays, inline tables and all TOML value types.
JSON to TOML
Convert JSON objects to TOML format. Generates valid TOML with tables, array of tables and proper value types.
XML Formatter
Format and indent XML documents for readability.
XML Validator
Validate XML syntax and structure. Detect malformed tags and encoding issues.
XML to JSON
Convert XML documents to JSON format with proper nested structure.
XML Minifier
Remove whitespace and comments from XML for compact output.
YAML Formatter
Format and normalize YAML files with consistent indentation.
YAML Validator
Validate YAML syntax and detect structural errors.
YAML to JSON
Convert YAML to JSON format with proper structure.
CSV to JSON
Convert CSV data to JSON array of objects using the first row as headers.
CSV Formatter
Format and normalize CSV data with consistent delimiters and quoting.
CSV to SQL
Convert CSV data to SQL INSERT statements for database import.
Base64 Encode / Decode
Encode text to Base64 or decode Base64 strings back to plain text.
URL Encode / Decode
Encode special characters for URL-safe usage or decode URL-encoded strings.
HTML Encode / Decode
Encode HTML entities or decode them back to characters.
Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal instantly. Supports any base input with real-time conversion.
JWT Generator
Generate signed JWT tokens with custom header, payload and secret key. Supports HS256, HS384 and HS512 algorithms entirely in the browser.
JWT Decoder
Decode and inspect JWT tokens. View header, payload, and expiration. Works entirely in the browser.
Unicode Converter
Convert text to Unicode code points and back, in multiple formats.
HEX Converter
Convert text to hexadecimal encoding and decode hex strings back to text.
Hash Generator
Generate cryptographic hashes (MD5, SHA-1, SHA-256, SHA-512) for any text input.
UUID Generator
Generate cryptographically secure UUIDs (v4) in bulk. Zero server calls.
Password Generator
Generate strong, random passwords with customizable length and character sets.
Password Strength Checker
Analyze password strength with entropy calculation and detailed feedback.
HMAC Generator
Generate HMAC signatures using SHA-256 or SHA-512 with a secret key.
Regex Tester
Test regular expressions against text with real-time match highlighting.
Regex Generator
Generate common regex patterns for email, URL, phone, date and more.
Diff Checker
Compare two text blocks and show additions, deletions and changes.
Case Converter
Convert text between camelCase, PascalCase, snake_case, kebab-case, UPPER_CASE and more.
Word Counter
Count words, characters, sentences, paragraphs and reading time.
Line Sorter
Sort lines alphabetically, numerically, or in reverse order.
Remove Duplicate Lines
Remove duplicate lines from text, keeping only unique entries.
Slug Generator
Convert text to URL-friendly slugs for use in URLs, file names, and IDs.
Lorem Ipsum Generator
Generate placeholder lorem ipsum text in words, sentences or paragraphs.
Markdown Previewer
Preview Markdown with live rendering. Supports GFM tables, code blocks and more.
Markdown to HTML
Convert Markdown to clean HTML output.
Text Cleaner
Remove extra spaces, blank lines, special characters and normalize text.
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa.
Epoch Converter
Convert between epoch time and human-readable date formats.
Timezone Converter
Convert date and time between any two time zones worldwide.
Cron Parser
Parse and explain cron expressions in plain English. See next run times.
URL Parser
Parse a URL into its components: protocol, host, pathname, query params, and hash.
URL Builder
Build URLs from components: base URL, path segments, and query parameters.
Meta Tag Generator
Generate HTML meta tags for SEO, Open Graph and Twitter Cards.
Robots.txt Generator
Generate a robots.txt file to control search engine crawling.
Gitignore Generator
Generate .gitignore files for your project by selecting frameworks and environments. Covers Node.js, Python, Java, Go, Rust, IDEs, macOS and more.
ENV Parser
Parse .env files to JSON or convert JSON objects to .env format. Handles quotes, comments and special characters correctly.
Open Graph Preview
Preview how your page looks when shared on Facebook, Twitter and LinkedIn. Generate all required meta tags from a visual form.
Semver Calculator
Check if a version satisfies a semver range and compare two versions. Supports ^ tilde, >=, <=, AND and OR ranges following the npm semver spec.
User Agent Parser
Parse user agent strings to identify browser, OS, and device type.
Flexbox Generator
Visually generate CSS Flexbox layouts with live preview. Configure flex-direction, justify-content, align-items and more with instant CSS output.
CSS Grid Generator
Visually design CSS Grid layouts. Set columns, rows, gap and named areas with a live preview and copy the generated CSS code instantly.
CSS Minifier
Minify CSS by removing whitespace, comments and redundant code.
CSS Beautifier
Beautify and format CSS with proper indentation and line breaks.
Box Shadow Generator
Visually generate CSS box-shadow with live preview and instant code output.
Gradient Generator
Create CSS linear and radial gradients with a visual editor.
CSS Clamp Generator
Generate CSS clamp() functions for fluid, responsive typography and spacing.
HTML Formatter
Format and indent HTML documents for improved readability.
HTML Minifier
Remove whitespace, comments and optional tags from HTML for production.
HTML to JSX
Convert HTML markup to valid JSX for use in React components.
JavaScript Formatter
Format and beautify JavaScript code with configurable indentation.
JavaScript Minifier
Minify JavaScript by removing whitespace and comments.
SQL Formatter
Format and beautify SQL queries with proper indentation and casing.
SQL Minifier
Minify SQL queries by removing whitespace and comments.
Color Picker
Pick colors and get HEX, RGB, HSL, and HSB values instantly.
HEX to RGB
Convert HEX color codes to RGB, RGBA, HSL and CSS color values.
Contrast Checker
Check color contrast ratios for WCAG 2.1 AA/AAA accessibility compliance.
Palette Generator
Generate color palettes from a base color including tints, shades and complementary colors.
Image to Base64
Convert images to Base64 data URLs for inline embedding in HTML and CSS.
Base64 to Image
Convert Base64 data URLs back to displayable images and download them.
SVG Optimizer
Optimize SVG files by removing unnecessary data and reducing file size.
QR Code Generator
Generate QR codes for URLs, text, and contact information instantly.
Free browser-based tools for everyday developer tasks
Find focused utilities for formatting data, converting encodings, generating secure values, testing regular expressions, working with colors, and cleaning text. Each tool opens directly in the browser and is designed for quick copy-and-paste workflows.
JSON tools
12 tools for format, validate, convert and diff json data.
XML tools
4 tools for format, validate, convert and test xml documents.
YAML tools
3 tools for format, validate and convert yaml files.
CSV tools
3 tools for view, format and convert csv data.
Encoding tools
8 tools for encode and decode base64, url, html, jwt and more.
Security tools
5 tools for generate hashes, uuids, passwords and hmac tokens.
Regex tools
2 tools for test, generate and explore regular expressions.
Text tools
10 tools for diff, transform, count and manipulate text.
Date & Time tools
4 tools for convert timestamps, epochs, timezones and cron expressions.
TOML tools
3 tools for format, validate and convert toml configuration files.
Web tools
9 tools for generate meta tags, parse urls, preview open graph and more.
CSS tools
7 tools for minify, beautify and generate css utilities.
HTML tools
3 tools for format, minify, preview and convert html.
JavaScript tools
2 tools for format, minify and inspect javascript code.
SQL tools
2 tools for format, minify and beautify sql queries.
Color tools
4 tools for pick, convert, generate palettes and check contrast.
Image tools
4 tools for convert images, optimize svgs, generate favicons and qr codes.
Programming tools
7 tools for run, test and inspect code snippets directly in the browser.