Start with what needs to change. Compress an image when its file is too large; resize it first if you also need fewer pixels.
Overview
Reduce the space your image takes up, then check that the saved copy still looks right where you plan to use it.
Choose the format before adjusting quality
Add up to 50 JPG, JPEG, PNG or WebP images, each up to 50 MB. The same settings apply to every image in the batch.
Under Options, choose Output Format and set Quality. The defaults are Jpeg and 0.8. Quality ranges from 0.1 to 1.0.
| Output Format | When it fits your task |
|---|---|
| Jpeg | Use for an opaque photograph when you need a JPEG file. It cannot retain a transparent background. |
| Png | Keep a PNG when you need transparency. Judge its saved size rather than relying on the Quality slider to make it smaller. |
| Webp | Choose WebP when the destination accepts it and you want to compare another compressed format. It can retain transparency. |
Click Compress. With JPEG and WebP, the tool may try a lower quality than you selected if the first result is not smaller. Check the result before deciding that the setting is right for your image.
Check size and detail before using the copy
Use Download for one result or Download All for a batch. Open a saved image at its intended display size. For a product photo, look at label text and fine edges; for a sky or backdrop, look for uneven bands of color.
Compare the saved file size with the original. If the new copy is still too large or has lost too much detail, keep the original and try a different format or setting.
Settings reference
| Setting | Options | Default |
|---|---|---|
| Quality | 0.1–1 | 0.8 |
| Output Format | jpeg, png, webp | jpeg |
Examples & use cases
A creator preparing images for sharing
Prepare a product photo for an upload limit
A photograph is too large in bytes for the destination.
JPG photo to JPEG copy
- Choose JPEG and start at Quality 0.8.
- Compress and compare the saved size with the limit.
- Inspect lettering and edges; reduce quality gradually only if necessary.
Expected outcome
The file may shrink, but no particular size or percentage is guaranteed.
A creator preparing images for sharing
Keep a transparent cutout lightweight
A cutout needs transparency in a web design.
Transparent PNG to WebP copy
- Select WebP as Output Format.
- Compress and download the result.
- Check transparency against the destination background and compare the file size.
Expected outcome
Use the copy only if the destination accepts WebP and its edges look suitable.
Access & cost
Check the processing mode and charge before starting. Eligible on-device tasks may offer a guest trial or daily allowance; cloud processing requires sign-in and credits.
Privacy
Check the processing mode before starting. Online processing uploads files; completed results may remain available for later download. See the Privacy Policy for current handling and retention details.
Questions about image compression
Can I keep a transparent background?
Choose Png or Webp. Jpeg cannot preserve transparency. Check the saved edges and background before using the image.
Will every file become a fixed percentage smaller?
No. The result depends on the source image and output settings. Compare the actual file sizes rather than expecting a fixed percentage reduction.
Can I guarantee that an image will fit a specific upload limit?
Check the downloaded file size against the destination's limit. Compression results depend on the image content and settings, so one quality value cannot guarantee a particular size. If needed, reduce quality gradually or resize the image before trying again.