Browser tool
Image Compressor for JPG, PNG and WebP
Load a photo, move the quality slider and watch the file size change before you download anything. You can also cap the longest edge to shrink huge camera files. The compression runs in this tab, so the original image is never uploaded.
Your photos stay on this device. Nothing is uploaded and no account or credits are used.
Choose an image to see its compressed size.
How to compress an image
Load the image
Choose one PNG, JPEG or WebP file. The tool reads the dimensions and the original file size immediately.
Set quality and size
Lower quality removes more detail and makes the file smaller. Capping the longest edge also shrinks the pixel dimensions, which usually saves far more than quality alone.
Compare and download
The panel shows the compressed size next to the original, so you can stop at the point where the file is small enough and the preview still looks right.
Quality, dimensions or both
Most of a photo’s weight comes from pixels, not from the compression level. Halving the longest edge cuts the pixel count by roughly three quarters. Use the size cap for photos straight from a camera or a phone, and the quality slider for images that are already small but still too heavy.
Which format should I download?
WebP is usually the smallest for photos and is supported by every current browser. JPEG is the safest choice for email, documents and older software. This tool does not save PNG output, because re-encoding a PNG at lower quality does not make it smaller. If you need transparency, keep the original PNG or make a cutout with remove background.
Questions
Does compressing an image reduce its quality?
Yes, lossy compression removes detail. At 70–80% quality most photos look unchanged on a screen, while the file gets much smaller. Compare the preview before you download.
Is the uploaded image stored anywhere?
No. The file is read and re-encoded in this browser tab. Nothing is sent to a server and no copy is saved.
Why can I not download a PNG?
PNG is lossless, so re-saving it at a lower quality does not shrink it. Convert a photo to JPEG or WebP instead, or cap the pixel dimensions if you must keep PNG.
How small will my file be?
It depends on the photo and the settings. The panel shows the measured size after each change, so you can adjust until it fits an upload limit instead of guessing.
Can I compress several images at once?
One image at a time. That keeps the comparison honest for each file. For many images, compress them one after another and note that the process is local, so there is no queue or limit.
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