Developer Tools,
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Developer Tools
Free, browser-based tools for encoding, hashing, formatting, and more.
JSON Formatter
Format, beautify, and minify JSON data with customizable indentation.
Try it →JSON Validator
Validate JSON syntax and get detailed error messages with line numbers.
Try it →JSON to YAML
Convert JSON data to YAML format instantly.
Try it →JSON Schema Validator
Validate JSON data against JSON Schema with detailed error reporting.
Try it →YAML Validator
Validate YAML syntax and convert between YAML and JSON formats.
Try it →CSV to JSON
Convert CSV data to JSON format with automatic delimiter detection.
Try it →JSON Path Finder
Query JSON data using JSONPath expressions with real-time results.
Try it →Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text.
Try it →URL Encoder / Decoder
Encode or decode URL components for safe transmission.
Try it →HTML Entity Encoder & Decoder
Encode and decode HTML entities for safe web content.
Try it →Base
Convert numbers between binary, octal, decimal, and hexadecimal bases.
Try it →UUID Generator
Generate random UUIDs (v4) or time-based UUIDs (v1).
Try it →Lorem Ipsum Generator
Generate placeholder text for designs and mockups.
Try it →Password Generator
Generate strong, random passwords with customizable length and character options
Try it →QR Code Generator
Generate QR codes from text, URLs, or any data. Download as SVG or PNG.
Try it →Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes from text.
Try it →JWT Decoder & Validator
Decode, inspect, and validate JSON Web Tokens instantly.
Try it →Regex Tester
Test regular expressions with real-time matching and highlighting.
Try it →Diff Checker
Compare two texts and see differences highlighted line by line.
Try it →Markdown Preview
Write Markdown and see real-time rendered preview side by side.
Try it →String Case
Convert text between camelCase, PascalCase, snake_case, kebab-case, and more.
Try it →SQL Formatter
Format and beautify SQL queries with dialect-specific formatting.
Try it →Color
Convert colors between HEX, RGB, and HSL formats instantly.
Try it →CSS Minifier
Minify CSS code to reduce file size and improve load times.
Try it →CSS Formatter
Format and beautify minified CSS with customizable indentation.
Try it →Cron Expression Builder
Build, test, and understand cron expressions with a visual editor.
Try it →Timestamp
Convert Unix timestamps to human-readable dates and vice versa.
Try it →Lightning Fast
All tools run in your browser. No server round-trips.
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Your data never leaves your device. No tracking, no storage.
Free Forever
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Latest from the Blog
View all posts →April 4, 2026
How to Format and Beautify CSS: A Complete Guide
Learn how to format and beautify CSS with Prettier, Stylelint, and online tools. Covers indentation rules, property ordering, and team standardization.
April 4, 2026
Epoch to Date: Convert Unix Timestamps in JS, Python, Go, Java, PHP & Rust
Convert epoch to date in JavaScript, Python, Go, Java, PHP, and Rust. Copy-paste code snippets with timezone-aware examples and common pitfalls.