Compress Images Online
Reduce image file size while maintaining excellent quality. Supports JPG, PNG and WebP.
How to Compress Images Online
Upload your image, click Compress Image and download the optimized version instantly. Pixores helps reduce image size while preserving visual quality.
Image compression should be evaluated at the size where people will actually view the image. The Pixores compressor normalizes orientation and creates a JPEG at quality 60, a practical delivery setting for many photographs but not the right output for transparency or every graphic.
Keep the original. Compression is a publishing step, and the smaller file should be reviewed for faces, text, gradients, and high-contrast edges before use.
Behavior and limits reviewed against the current Pixores implementation on August 14, 2026.- Accepted upload
- JPG, PNG, or WebP
- Output
- Compressed JPG
- JPEG quality
- 60
- Transparency
- Not retained in JPG
What we verified for this tool
This record describes a reproducible product check, not a stock claim about image quality.
- Reference scenario
- Opaque photographic image with EXIF orientation
- Review method
- Review the endpoint configuration and compare the downloaded copy with the source at identical display dimensions.
- Observed behavior
- The orientation is normalized and the derivative is encoded as JPEG at quality 60 without changing the requested task into a resize.
- Known boundary
- Transparency cannot survive the JPEG output, and small text can show ringing at this setting.
How to use this tool
- Resize oversized dimensions before compression when possible.
- Select a representative source and create the compressed copy.
- Compare it with the original at the final display size.
- Inspect text, skin, skies, gradients, and edges at 100 percent.
- Publish only the derivative and retain the original master.
When it is a good fit
- Website photographs
- Blog cover images
- Email-friendly photo copies
- Reducing transfer time for opaque images
Limitations to check
- Transparent images are flattened for JPG output.
- Graphics with text may show ringing.
- Repeated compression creates cumulative loss.
File handling and privacy
The image is processed by the Pixores compression endpoint. Use local tools for files that should never leave the device.
Frequently asked questions
Will the pixel dimensions change?
The compressor targets encoding size rather than deliberate dimension changes. Use Resize Image when width or height must change.
Is quality 60 suitable for every image?
No single setting is universal. Review the actual result and use a different workflow when fine detail or text does not survive.
Why did a transparent image change?
The current compressed output is JPEG, which cannot preserve an alpha channel.