Side by side
FileOptimizer vs ImageOptimizer
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.
FileOptimizer offers broad file support, batch handling and command-line workflows at no charge. Windows users should note that optimization overwrites working files and that PDF processing can reduce image quality.
Visit FileOptimizerChoose ImageOptimizer for browser or API workflows that combine compression, resizing, conversion, metadata controls, and local processing. Its cloud-export options and background removal add practical workflow coverage. Consider another service if your local volume exceeds 100 images per day or you need more than the free API allowance without moving to a paid plan.
Visit ImageOptimizerThe facts
| FileOptimizer | ImageOptimizer | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Windows | API, Web |
| Lowest paid plan | Free or on request | Starter: $4.99 a month |
| Plans published | 1 | 4 |
| Maker | Not published | Not published |
| Website | nikkhokkho.sourceforge.io | imageoptimizer.org |
| On image compression software | #18 of 85 | #22 of 85 |
FileOptimizer: what it does well
- Free for personal and commercial use without feature limits
- Batch processing and command-line automation
- Supports more than 600 file extensions
- Original files are kept in the recycle bin
- Lossless optimization is the default
What to know first
- The program is for Windows
- Optimization overwrites working files
- Lossy options are available for PNG, JPEG and GIF
- PDF optimization can reduce image quality
ImageOptimizer: what it does well
- Handles six listed image formats
- Batch processing and API access
- Local browser processing without server storage
- On-device background removal
- Exports to Google Drive, Dropbox, and OneDrive
What to know first
- Local processing capped at 100 images daily
- Free API access limited to five calls daily
- SEO naming has monthly plan allowances
- Paid plans are billed monthly
Alternatives to FileOptimizer Alternatives to ImageOptimizer The whole list