Side by side
Scalir vs Thumbor
Both stand on image compression software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan LinuxSelf-hostedWeb+1
Choose Scalir for local bulk image compression, resizing, and conversion, with a choice of hosted, desktop, or self-hosted use. Look elsewhere if you need a separate macOS desktop build or an unlimited hosted session.
Visit Scalir Free plan APILinuxSelf-hosted
Thumbor combines on-demand image transformations with configurable detection, filters, loaders, and storage. Its free, self-hosted model fits teams prepared to manage the service and meet its Python requirement.
Visit ThumborThe facts
| Scalir | Thumbor | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Linux, Self-hosted, Web, Windows | API, Linux, Self-hosted |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Thumbor |
| Website | scalir.org | thumbor.org |
| On image compression software | #10 of 85 | #6 of 85 |
Scalir: what it does well
- Processes image files locally on the device.
- Supports eight image input formats.
- Can run batch jobs across CPU cores.
- Provides precise resizing options without upscaling.
- Open source under the MIT license.
What to know first
- The hosted app has a small soft per-session limit.
- There is no separate macOS desktop build yet.
- The PWA works offline only after its first load.
Thumbor: what it does well
- On-demand cropping, resizing, and flipping
- Smart cropping prioritizes face detection
- Chainable filters include blur and grayscale
- Custom loaders, storages, engines, and optimizers
- Free plan listed as free
What to know first
- Current releases require Python 3.10 or newer
- Default HTTP loader uses HTTP
- Self-hosted setup is listed as a platform
Alternatives to Scalir Alternatives to Thumbor The whole list