Image Compressor
Runs entirely in your browser
Compress one or more JPG, PNG and WebP images directly in your browser. Your images are processed entirely on your device and are never uploaded to our servers.
Drag & drop images here
or
Supports JPG, PNG, WebP. Up to 100 images, 25MB each.
Images (0)
Applies to JPG and WebP output. PNG output is always lossless.
How to use Image Compressor
- Choose one or more images, or drag and drop them into the tool.
- Adjust the quality slider and pick an output format if needed.
- Click Compress, then download each result or grab them all at once as a ZIP.
Features
- Compresses JPG, PNG and WebP images — one at a time or in a batch.
- Convert between formats while compressing.
- Adjustable quality for JPG and WebP output.
- Shows original vs. compressed file size for every image.
- Download all compressed images at once as a ZIP, or one at a time.
- 100% client-side — your images never leave your browser.
Frequently Asked Questions
Are my images uploaded to a server?
No. Image Compressor runs entirely in your browser using the Canvas API. Your files never leave your device.
Which image formats are supported?
You can compress JPG, PNG and WebP images, and convert between these formats while compressing.
Will compressing reduce image quality?
JPG and WebP use adjustable lossy quality, so you can balance file size against visual quality with the quality slider. PNG compression is lossless, so quality stays the same regardless of the slider.
Is there a file size limit?
You can compress images up to 25MB. Larger files may be slow to process depending on your device.
Can I compress multiple images at once?
Yes. Add up to 100 images in one batch, compress them all with the same quality and format settings, then download each one individually or all together as a ZIP.
Why did my file get bigger after compressing?
This can happen with PNG images that were already optimized by another tool. The browser's PNG encoder doesn't reduce colors or use a palette the way dedicated optimizers do, so re-encoding an already-small PNG can produce a larger file. If that happens, try converting to JPEG or WebP instead, which usually compress further.