Squoosh Alternative: In-Browser Image Compression
A free, in-browser alternative to Squoosh — with more formats and extra tools.
Squoosh (by Google) showed that image compression can run entirely in the browser. It is a great tool, but it has been in maintenance mode and focuses on a single image at a time and a limited set of formats.
FormatFlash also runs client-side, and adds a wider catalogue: many image conversions, compression, PDF and text/data tools, and background removal.
FormatFlash vs Squoosh
| Criterion | FormatFlash | Squoosh |
|---|---|---|
| Where files are processed | Your browser (client-side) | Your browser (client-side) |
| Upload required | No | No |
| Main focus | Convert + compress + PDF + text tools | Image compression |
| Formats | HEIC, JPG, PNG, WebP, AVIF, GIF, BMP, TIFF | JPG, PNG, WebP, AVIF (and more) |
| Batch / multiple files | Yes | One at a time |
| Extra tools | PDF tools, OCR, background removal | Image compression only |
| Maintenance | Actively used | In maintenance mode |
Where FormatFlash helps
- Batch convert HEIC/JPG/PNG to WebP.
- Compress to a smaller size with a quality slider.
- Convert images to PDF and PDF back to images.
- Extract text from images with OCR.
An honest comparison
If you only need fine-grained compression of a single image with advanced codec options, Squoosh is excellent. For everyday conversions, batch work, PDF/text tasks or background removal, FormatFlash covers more ground — also without uploading.
Frequently asked questions
Is FormatFlash local like Squoosh?
Yes — both run in your browser; nothing is uploaded.
Does FormatFlash support HEIC?
Yes, including iPhone HEIC/HEIF to JPG, PNG or WebP.
Can I compress several images?
Yes, you can add multiple images and download them individually or as a ZIP.
Try it
Compress or convert your images now — free, private and without uploading them.