Free PNG compressor
Shrink PNG screenshots and graphics. Batch compress and download a ZIP — no upload wait. Default output stays PNG; switch format in settings if you need smaller photos.
Click to choose images, or drag them here
JPG, PNG, WebP, GIF, SVG · up to 50 files · max 40 MB each
How small should files get?
The tool finds the highest quality that still meets the target size, and scales down only if needed. Images already under the limit are left unchanged.
How it works
Step 1 · Add files
Drop PNG screenshots or graphics into the compressor (other formats work too).
Step 2 · Confirm settings
Pick a size preset or Custom KB/MB limit; output stays PNG unless you change it.
Step 3 · Download
Download files or a ZIP — use Compare or Adjust on a result if it looks soft or still too large.
Good for
- Oversized PNG screenshots for docs, tickets, or chat
- UI graphics that should stay PNG with transparency
- When a site requires PNG but your export is tens of megabytes
What to watch for
Photo-like PNGs often will not hit tight KB limits as PNG. Switch output to JPEG or WebP, or use PNG to WebP, unless you must keep a lossless file.
Local compression vs upload compressors
| Compared to | Compress Locally (this site) | Typical upload tools |
|---|---|---|
| Where compression runs | In your browser — nothing is uploadedYes — | Uploaded, processed, then downloadedNo — |
| Target size | Presets plus custom KB/MB limitsYes — | Often quality-only, or locked behind signupNo — |
| Batch work | Compress many files and download a ZIP — no upload waitYes — | One file at a time, or hit daily free-tier caps; ZIP often needs signupNo — |
| Privacy | We never see your photosYes — | Depends on that site's policyNo — |
| Already small enough | Files under the limit are left unchangedYes — | May recompress everything anywayNo — |
What you get
- Target size presets and custom KB/MB limits
- Default output format: PNG
- Compare before/after on each result
- Batch ZIP download — no upload queue
Frequently asked questions
PNG photos will not go small enough — why?
Photo-like PNGs resist tight size limits. Switch output to JPEG or WebP in Custom settings, or lower max width, then compress again toward your target.
What is the default output format here?
PNG stays the default so screenshots and graphics keep lossless pixels and transparency. Change output in Custom settings when you need smaller photo files.
Can I use dedicated size pages instead?
Yes. Open Compress to 200KB, 500KB, or another size page when you need a preset limit. This hub is the same engine with PNG as the default export.
What do Compare and Adjust do?
Compare shows a before/after preview with sizes. Adjust re-runs one image with different quality, target size, or max width — useful when a screenshot looks soft or still exceeds your limit.