Compress images without losing quality
A built-in quality gate checks every pixel, so the result looks identical to your original, just smaller. PNG, JPEG, WebP and iPhone HEIC. Free, no sign-up.
Identical to the original, verified pixel by pixel
Spot the difference. There isn't one.
Drag the handle across the image. Left is the original, right is our compressed copy: visually identical, but 91% lighter.
Original · 2.2 MBCompressed · 193 KB
Your images stay private
Processed in memory and deleted the moment your download is ready. Never stored, logged or shared.
No quality loss
A per-pixel check keeps every image visually identical to the original.
Free, no sign-up
No account, no watermark, no limits. Just drop and download.
How it works
Compresso finds the colors and details your eyes don't register and removes only those. A built-in quality gate compares every result with the original pixel by pixel. If a difference could be visible, we keep the safer version, so your image never gets worse.
Frequently asked questions
Yes, completely free with no sign-up and no watermark. Compress as many images as you like within the per-batch limit.
No. A built-in quality gate compares every result with the original pixel by pixel and keeps it only when the difference is invisible, so your image never looks worse.
Yes. Files are processed in memory, never written to disk, logged or shared, and the compressed copy goes straight back to your browser.
PNG, JPEG, WebP and iPhone HEIC. HEIC files are decoded in your browser and returned as widely compatible JPEG images; every format uses the encoder best suited to it.
Up to 20 images per batch, 25 MB each. There is no daily cap.
Typically 50 to 80 percent for PNG and around 70 percent for JPEG, with no visible difference.