AI & Developer Tools
Madabase
A growing library of free browser-first tools, SEO-friendly landing pages, and practical content designed to earn search traffic.
$ tools.count 30
$ locales 2
$ route /en/tools/json-formatter
Popular Tools
Free JSON Formatter Online
Format, minify, and validate JSON instantly in your browser.
Free JSON Validator Online
Validate JSON and surface syntax errors with useful hints.
JSON to TypeScript Interface Generator
Generate TypeScript interfaces from JSON samples.
Free JWT Decoder Online
Decode JWT header and payload instantly.
Free Base64 Encoder and Decoder
Encode and decode Base64 text in the browser.
Free Timestamp Converter Online
Convert Unix timestamps to human-readable dates.
Free Regex Tester Online
Test regular expressions against sample text.
Free Password Generator Online
Generate strong passwords instantly.
Free QR Code Generator Online
Generate QR codes for links and text.
Categories
Read the blogDeveloper Tools
JSON, JWT, SQL, regex, cron, hash, and more.
Web Tools
Encoding, HTML, CSS, URLs, and QR workflows.
Creator & Text
Markdown, counters, slugs, and content cleanup tools.
Latest Blog
Browse all2026-06-10
JWT Decoder Online for Fast Token Inspection
Use a JWT decoder online to inspect claims, expiration times, and headers without sending tokens to a backend.
2026-06-10
JSON Formatter Online: Best Practices for Clean API Payloads
Learn how to use a JSON formatter online to clean API responses, debug payloads, and ship safer integrations.
2026-06-10
Free Online Tools for Faster Debugging
See how free online tools help developers validate payloads, inspect URLs, decode tokens, and speed up daily debugging.
2026-06-10
Developer Tools That Save Time Every Week
Discover developer tools that reduce repetitive work across formatting, parsing, encoding, and content cleanup.
Premium Preview
Feature flags are now in place for future upgrades like ad-free usage, larger files, and export workflows.