ImageFlock Tools is a small collection of image utilities for everyday jobs: making a photo small enough to email, converting a screenshot to the right format, cropping a picture for a social post, or removing location data before sharing.
Why everything runs in your browser
Many online image tools upload your file to a server, process it there and send it back. That is slower, it costs money to run — which usually means sign-ups, limits or adverts — and it means a copy of your image passes through someone else’s computer.
Modern browsers can decode, resize and encode images on their own. ImageFlock Tools uses those built-in capabilities, plus a few small open-source libraries, so the work happens on your device. The website only delivers the code for the tools; your images stay with you.
What the tools can and can’t do
- They work with JPG, PNG and WebP images.
- Results depend on your browser’s image encoder, so file sizes can differ slightly between Chrome, Firefox and Safari.
- Very large images (above roughly 40 megapixels) are refused to avoid crashing the browser tab.
- Animated images are converted as a single still frame.
Open-source libraries
With thanks to the authors of these MIT-licensed projects, which run locally in your browser:
- React and React Router — the user interface.
- UPNG.js — palette reduction for smaller PNG files.
- exifr — reading metadata so you can see what is being removed.
- fflate — building ZIP files for bulk downloads.