Rivmu vs TinyPNG
TinyPNG is excellent at shrinking PNGs. Rivmu takes larger files, in bigger batches, without sending them anywhere.
Where TinyPNG is stronger
It's built for compression, and it can shrink a PNG while keeping it a PNG. Ours saves PNGs as JPG or WEBP instead, so if you need to stay in PNG, TinyPNG is the better tool.
Where Rivmu is stronger
TinyPNG's free page lists 20 images at 5 MB each, and says images are kept for up to 48 hours. Rivmu takes 50 images at up to 100 MB each, and never receives them.
| Rivmu | TinyPNG | |
|---|---|---|
| Free images per batch | 50 | 20 |
| Free size per image | 100 MB | 5 MB |
| Keeping PNG as PNG | No | Yes |
| Files kept | Never leave your device | Up to 48 hours (their site) |
Facts about other services come from their own websites, checked on 31 October and 1 November 2026. Plans change, so confirm on their site before you decide.