Image Compressor

Shrink the file size of a JPG, PNG or WebP with a quality slider and see the before-and-after size instantly. The dimensions stay the same — only the bytes go down. Everything runs in your browser, so nothing is uploaded.

Drop an image here or click to browse JPG, PNG, WEBP, GIF or BMP · stays on your device
80%

How to Compress an Image

Three steps, all in your browser.

1

Add your image

Drag a file onto the drop zone or click to browse. JPG, PNG, WEBP, GIF and BMP are accepted, and the file never leaves your device. You will see its format, size and dimensions once it loads.

2

Set quality

Choose WEBP for the smallest file or JPG for the widest support, then drag the quality slider. Lower quality means a smaller file. Need fewer pixels too? Resize first with the Image Resizer.

3

Compress and download

Click Compress to see the original size, the new size and the percentage saved. Preview it, adjust the slider if needed, and download. Want a different file type entirely? Try the Image Converter.

Frequently Asked Questions

Does compressing upload my image to a server?
No. The compressor runs entirely in your browser. Your image is decoded, re-encoded at your chosen quality and downloaded on your own device — it is never sent to a server, logged or stored. That makes it safe for private photos, screenshots and confidential graphics, and it keeps working offline once the page has loaded. Closing the tab clears everything.
How much smaller will my image get?
It depends on the image and the quality you pick. Photos typically shrink by 40 to 80 percent at a quality of 70 to 85 with little visible loss, while images that are already compressed may shrink less. After each run the tool shows the original size, the new size and the exact percentage saved so you can nudge the slider until the trade-off feels right.
Will compressing reduce the image quality?
JPG and WEBP are lossy formats, so lowering the quality slider removes fine detail to save space. At 80 to 90 percent the difference is usually invisible; below about 60 percent you may start to see softening or blocking, especially around text and sharp edges. Preview the result before downloading and raise the quality if it looks too soft. The pixel dimensions are always kept — only the file size changes.
Can I compress a PNG?
Yes. Because PNG is lossless, the biggest savings come from re-encoding it as WEBP (which keeps transparency) or JPG (which does not). The compressor defaults a PNG to WEBP for this reason. If you specifically need the file to stay a PNG, the file-size reduction will be smaller — resizing the dimensions with the Image Resizer is often the better lever there.
Does compressing change the dimensions?
No. Compression keeps the width and height exactly the same and only changes how the pixels are stored, so the image still fits wherever it did before. If you also want fewer pixels — for example to fit an upload limit or a layout — resize it first with the companion Image Resizer, then compress.