When this tool helps
- Reduce the transfer size of a website image
- Prepare a smaller attachment without sharing the source with a service
- Compare compression quality before replacing a published asset
IMAGE TOOLS
Image Compressor
Reduce image size with adjustable WebP quality and optional downscaling.
Processed locally. Your image is never uploaded.
PRACTICAL GUIDE
How to use Image Compressor
Last reviewed
Compress a JPG, PNG or WebP image without uploading it. The tool can reduce oversized dimensions, encode a WebP copy and show the source and result together so file-size savings are not separated from visible quality.
How to use it
- Choose a JPG, PNG or WebP image up to 25 MB
- Set a maximum width and choose Smaller, Recommended or Sharper quality
- Compare the source and compressed preview and review the size difference
- Download the WebP copy only when the visual result is acceptable
Compressing a large website photograph
- Input
- A 2400 x 1600 JPG, maximum width 1600 and Recommended quality
- Result
- A proportionally resized WebP with its new dimensions and byte size shown
Reducing pixel dimensions before WebP encoding can save more bytes than changing quality alone. The exact result depends on detail, noise and the source encoding.
Limits and assumptions
- Input files are limited to 25 MB and decoded images to 40 megapixels
- Compression can make an already optimized image larger
- WebP output may not preserve every source metadata field or color-profile detail
Frequently asked questions
Are images uploaded for compression?
No. The browser decodes, resizes and encodes the image locally on your device.
Which quality setting should I use?
Start with Recommended, inspect fine detail in the comparison, then move toward Smaller or Sharper for your specific image.
Why is the compressed image sometimes larger?
The source may already be highly optimized, or the selected dimensions and quality may require more bytes than the original encoding.