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Squoosh alternative.
batch tools, still local
A Squoosh.app alternative for people who want batch compress/convert in the browser. No upload, no account, no watermark.
| Squoosh | ImageOptimizer | |
|---|---|---|
| Where files go | Local (Squoosh is also client-side) | Local — same idea |
| Batch | One image at a time | Batch + ZIP download |
| Codec playground | Best-in-class side-by-side codecs | Simple presets + quality slider |
| Exact KB | You watch the size while you tweak | Dedicated 20 / 50 / 100 / 200 KB targets |
| Extra jobs | Encode experiments | Convert matrix, HEIC, Gemini watermark, metadata |
Squoosh is the codec lab
Google’s Squoosh is excellent: local, honest, and the best place to compare MozJPEG vs WebP vs AVIF on one picture. If you are choosing a codec for a design system, open Squoosh.
Where we differ
ImageOptimizer is the production toolkit around the same “never upload” idea: batch compress, convert every common pair, hit a form’s kilobyte cap, resize for Instagram, strip GPS, remove a Gemini sparkle. Start with Compress or Convert.
Frequently asked questions
Yes. Squoosh.app is the gold-standard local playground. We are not claiming they upload files.
Batch, ZIP, dedicated search pages (WebP to JPG, HEIC to JPG, compress to 100 KB), and Gemini watermark — still local.
Squoosh. Use us when you want to finish a folder of files or land from a specific search.