DevTools+: Developer Tools

DevTools+ puts 500+ developer tools in one searchable app.

Use it as a JSON formatter, API tester, regex tester, JWT decoder, Base64 encoder and decoder, UUID generator, timestamp converter, SQL formatter, and much more. Finish common code and data tasks from your Android phone or tablet without jumping between random websites.

FIND THE RIGHT TOOL FAST
- Search 496 tools across 29 categories
- Pin favorites and reopen recent dev tools
- Start with practical examples
- Copy and share results
- Keep supported history, snippets, and API work organized

FORMAT AND CONVERT
- Format, validate, minify, sort, escape, and inspect JSON
- Convert JSON to YAML, CSV, XML, TypeScript, and Java
- Work with XML, YAML, TOML, CSV, Markdown, SQL, and text

DECODE AND INSPECT
- Decode and inspect JWTs
- Encode and decode Base64, URLs, HTML, Unicode, and hexadecimal data
- Generate hashes and HMAC values
- Check passwords, certificates, headers, timestamps, timezones, cron expressions, MIME types, ports, and HTTP status codes

BUILD AND TEST
- Test APIs and work with REST, GraphQL, cURL, headers, and WebSockets
- Test regex patterns, matches, replacements, and groups
- Generate UUIDs, mock data, payloads, barcodes, and QR codes
- Use Git, CSS, React Native, testing, documentation, file, and log helpers

LOCAL-FIRST BY DESIGN
Most tools process directly on your device. Tools that require a network connection are clearly identified. Nothing you enter is sent anywhere unless the selected tool requires a network request.

NO ACCOUNT REQUIRED
Open DevTools+ and start working. A useful selection of tools is free. DevTools+ Pro unlocks the complete toolkit and removes ads.

Built for developers, QA engineers, API testers, students, and technical teams who want practical developer tools on Android.