Developer Tools
Essential tools for software developers and programmers — 19 free tools
JSON Formatter
Format, validate and beautify JSON data instantly online.
Base64 Encoder
Encode plain text to Base64 instantly in your browser. Free and private.
Base64 Decoder
Decode Base64 strings back to plain text, JSON, or XML instantly. Auto-detects and syntax-highlights structured output.
Decode Gzip Base64
Decode and decompress Gzip-compressed Base64 strings instantly in your browser. Supports URL-safe Base64, data URIs, and JSON output.
Compress Gzip Base64
GZIP-compress any text or JSON and encode the result as Base64 instantly in your browser. Supports compression levels, URL-safe output, and size stats.
UUID Generator
Generate unique UUIDs (v1, v4) instantly for your projects.
JWT Decoder
Decode and inspect JSON Web Token (JWT) payloads.
URL Encoder / Decoder
Encode or decode URLs and query parameters.
HTML Encoder / Decoder
Encode special characters to HTML entities and back.
Regex Tester
Test and debug regular expressions with live matching.
Diff Checker
Compare two blocks of text and highlight the differences.
Markdown Editor
Write and edit Markdown with syntax highlighting. All processing happens in your browser.
Markdown to HTML Converter
Convert Markdown syntax into clean, sanitized HTML instantly in your browser. Supports GFM tables, task lists, code blocks, and more.
HTML to Markdown Converter
Convert HTML markup to clean Markdown syntax instantly in your browser.
Confluence to Markdown Converter
Convert Confluence wiki markup, storage format XML, and exported HTML to clean Markdown instantly in your browser.
Database Schema Designer
Visually design MongoDB schemas with collections, fields, and relationships — then export to JSON, PNG, or SVG.
Cron Expression Generator
Build and validate cron expressions with a visual editor.
SonarQube CSV Export
Convert SonarQube JSON issue exports to CSV instantly in your browser. No upload required — paste your JSON, preview results, and download.
Web Scraping
Configure reusable scraping providers and browse structured results from external websites. Authenticated, proxy-ready, and built for developers.