TinyPNG is a well-known online image compressor that reduces the size of PNG and JPG files while keeping good quality. Images are uploaded to their servers to be compressed.
Toolkoa compresses images inside your browser, with a quality control and a live before/after comparison so you can pick the exact point. No account, no watermark and no sending your photos.
Real limits: the result depends on the browser's codec, so the final size may differ somewhat from TinyPNG's for the same image. For PNGs with transparency it's worth trying an export to WebP.
| Feature | Toolkoa | TinyPNG |
|---|---|---|
| Where images are processed | In your browser, never uploaded | On their servers |
| Manual quality control | Yes, with preview | Automatic |
| Account required | No | Check their website |
| Developer API | No | Yes |
| Private images without sending them | Yes | Requires uploading |
JPG, PNG and WebP. You can also convert between formats with the image converter.
Yes, with the SVG optimiser, which cleans up the file's code without uploading it.
You choose the level. The comparison slider shows you the result before you download it.