DevKit Companion — Developer Toolkit

DevKit Companion brings practical developer tools and technical references together in one convenient, installable web app.

Whether you're learning to code, building applications, or troubleshooting technical problems, DevKit Companion helps make everyday development tasks easier.

What's included?

Base64 Converter: Encode and decode text, including Unicode characters and emojis.

JSON Formatter & Validator: Format JSON, minify it, and check for syntax errors.

SHA-256 Checksum Calculator: Calculate SHA-256 checksums.

Android Signing Helper: Explore Android application-signing guidance and commands.

GitHub Actions YAML Checker: Check common workflow syntax and configuration issues.

Developer Error Guide: Explore solutions to common Android, Gradle, and CI development problems.

Learn: Find useful development references and learning materials.

Use it on your phone

DevKit Companion is an installable Progressive Web App (PWA).

Open the website in a supported browser and use its installation option to add it to your device's home screen.

The current version is a web app, not a downloadable native Android APK.

Who is it for?

Students learning software development.

Beginner programmers exploring developer tools.

Android developers working with signing and build workflows.

Developers who regularly work with JSON and encoded text.

Anyone looking for convenient utilities for everyday development.

Help us improve DevKit Companion!

We're welcoming people to explore the tools, test the app, and share honest feedback.

Found a bug? Have an idea for a new feature? We'd love to hear from you.

Try DevKit Companion here:

https://devkit-companion.ai.studio⁠�

Build smarter. Fix errors. Ship with confidence.