How to use Image Compressor
- Upload an image.
- Adjust the quality slider and preview the result.
- Compare original vs compressed size.
- Download the compressed image when you are happy with the tradeoff.
Worked examples
Concrete numbers and cases you can check against the tool above.
Hero photo that fails a 500 KB upload cap
A 4000×3000 camera JPEG at quality 95 can be 4–8 MB. Re-encoding at quality 70–80 often reaches 400–700 KB. If it is still large, resize the longest edge to 1600–2000 px first, then compress — pixel count drives size more than a few quality points.
When to use Image Compressor
Large images slow pages, burn mobile data, and get rejected by upload forms. Compressing in the browser lets you hit size limits while previewing quality tradeoffs before you publish.
Common use cases
- Shrink hero images so a landing page passes Core Web Vitals budgets.
- Reduce photo attachments so they fit help-desk or ticket upload caps.
- Compress portfolio shots for a personal site without visible banding.
- Prepare social posts that look sharp but stay under platform size limits.
Inputs and outputs
- Input: PNG, JPEG/JPG, WebP, and other common browser image formats
- Output: Compressed JPEG or format supported by the tool UI
Privacy
Files are processed locally in your browser and are never uploaded. Close the tab when you are done and nothing is retained on our side.
Frequently asked questions
- How much can I compress an image?
- It depends on the original. Photos often shrink a lot at moderate JPEG/WebP quality; already-compressed files may save less.
- Is compression lossless?
- Typical web compression is lossy. Lower quality means smaller files and more visible artifacts.
- Are my images uploaded?
- No. Compression runs locally in your browser.