Changelog
What we have shipped on FastKit, newest first. New tools are added when real people ask for them, and fixes are logged here too.
- Launched the FastKit Guides section with in-depth explainers on the formats and algorithms behind our tools.
- Added a full site changelog so you can see exactly what changed and when.
- Homepage now explains how FastKit works and answers common questions up front.
- Added the App Icon Generator — export every iOS, Android adaptive/round, Google Play and favicon size from one image, zipped.
- Added the Batch Image Resizer — resize many images at once to fixed, percentage or max-side sizes and download a single ZIP.
- Added the Batch File Renamer — Finder-style rename with live preview and collision detection.
- Added AES-GCM and ChaCha20 / XChaCha20-Poly1305 authenticated-encryption tools.
- Expanded long-form explanations under every tool page.
- First public release of FastKit with the core set: text, color, image, time, encoding, cryptography and API-testing tools.
- Every tool runs 100% locally in the browser using JavaScript and the Web Crypto API — no uploads, no accounts.
- Site launched with full translations across ten languages.
Want a tool that is not here yet? Tell us — requests shape what we build next.