Image compressor
Shrink JPG or PNG file size without unnecessary quality loss. Compression stays in your browser.
How to compress an image
1. Choose an image from your device.
2. Set quality: low, medium, or high.
3. Click “Compress” and compare file size.
4. Download the result if the quality looks acceptable.
Examples
Email attachment
An 8 MB photo is often worth bringing below 1–2 MB at medium quality so it passes mailbox limits.
Government form or CV
Many forms cap uploads at 1–2 MB. Medium compression usually keeps text readable.
Social media
Shrink file size before posting so upload is faster — especially on a slow connection.
When to compress
• When a file exceeds a form or email limit.
• When heavy images slow your site.
• When you want a smaller file without installing software.
Lossy compression in practice
JPEG drops information the eye often misses — especially in backgrounds and gradients. Text, logos, and sharp edges show artifacts sooner. Then either raise quality or stay with PNG.
Frequently asked questions
Does compression reduce quality?
With JPEG, yes — lower quality means a smaller file and more visible artifacts.
Can I compress PNG too?
Yes, but output is often saved as JPEG (better for photos). Transparency may be lost.
Which quality should I pick?
Start with medium. If you see artifacts, raise it; if the file is still too big, lower it or resize dimensions first.
Can I compress many images at once?
The current version handles one image at a time.
What about metadata?
Saving through a canvas usually does not keep metadata.