Compress Image Online Free
Runs 100% in your browser — your files never leave your device.
Beat the upload limit: set a target size in megabytes and the compressor re-encodes your image until it fits, dropping only as much quality as it must. Optionally cap the longest side to downscale huge photos at the same time. Your image is processed locally and never uploaded.
How it works
- 1
Add your image
Drop a JPG, PNG, or WebP into the box and see its current size.
- 2
Set the target
Choose a target size in MB — and optionally a max dimension to downscale.
- 3
Compress and download
Watch the progress bar, then download the smaller file with the savings shown.
About this tool
How image compression works here
Compression re-encodes your image at a quality level you choose. The pixel dimensions never change — only how efficiently the pixels are stored. Lower quality levels discard detail the eye barely notices first, and the savings grow as you go lower.
When to reach for it
Web pages load faster with lighter images, email attachments clear size limits, and upload forms accept files they would otherwise refuse. Compressing before uploading is also the single easiest site-speed win there is.
Tips for the best result
Step the quality down until you first notice the difference, then go one step back up — that is the efficient frontier. Converting to WebP at the same time usually beats pure JPG compression for size at equal quality.
Frequently asked questions
How much smaller will my image get?
Typical photos compress 50–80 percent at balanced settings with no visible change. Images that were already saved at low quality shrink less — they were compressed once before.
Is compression the same as resizing?
No — resizing changes the pixel dimensions; compression changes how the same pixels are stored. For the biggest savings, resize first, then compress.
Does compression lose quality?
JPG and WebP are lossy formats, so some data is discarded — the art is discarding only what the eye misses. At sensible settings you will not see a difference; at extreme settings artifacts appear around sharp edges.