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OnlineTools4Free wins on privacy and cost — your images never leave your browser and there are no file limits. TinyPNG produces slightly smaller file sizes for PNG but requires server uploads.
onlinetools4free.com
tinypng.com
| Feature | OnlineTools4Free | TinyPNG |
|---|---|---|
| Privacy (client-side processing) | ||
| Price | 100% Free | Free (20/mo), Pro $25/yr |
| Speed | Instant (local) | Upload dependent |
| No account required | ||
| Batch processing | Up to 100 images | Up to 20 (free) |
| Number of tools | 120+ | 1 (compression) |
| File size limits | Browser memory only | 5MB free |
| Ads | ||
| Open source | ||
| PNG compression quality | Good | Excellent (lossy quantization) |
OnlineTools4Free wins on privacy and cost — your images never leave your browser and there are no file limits. TinyPNG produces slightly smaller file sizes for PNG but requires server uploads.
Try OnlineTools4Free for Free