Compress image to 500KB
Test an image against a 500KB ceiling. A source that already fits stays unchanged; a larger one gets a new JPEG result to inspect.
Drag images in, paste, or click to choose
A whole folder works too · Ctrl/Cmd+V pastes · on phone this opens your file picker · up to 40 MB per file
How the 500KB compression works
The opening limit is 512,000 bytes. A decodable file at or below it returns its original bytes, preserving format, transparency and metadata. Otherwise the tool searches JPEG quality and, if enabled and needed, smaller dimensions. It reports the achieved size even when the target cannot be reached.
Limitations of a 500KB target
- A higher byte ceiling does not guarantee an unchanged appearance. JPEG re-encoding can discard visible detail.
- Only re-encoded results become JPEG with a white background. The unchanged-file path keeps the source format.
500KB compression FAQs
What happens if my photo is already smaller than 500KB?
After checking that the browser can decode it, the tool returns the original file. Use Download to save it; no new JPEG is made.
Can I lose detail even at a 500KB target?
Yes. The effect depends on the source and changes needed. Inspect the preview instead of assuming this ceiling preserves full quality or dimensions.
Are original files uploaded for processing?
No. The file is decoded and processed in your browser tab. You choose when to download the result.
How can I process a folder against 500KB?
Add the files and click Compress all. Up to three jobs run concurrently, subject to hardware limits. Check the available results, then click Download all as ZIP.
