Compress PNG
Reduce heavy PNG file sizes in your browser — with an honest explanation of how PNG compression actually works.
- 100% free
- No upload — runs in your browser
- No sign-up needed
PNG is lossless, which is why screenshots and graphics saved as PNG can be surprisingly heavy — there's no quality dial inside the format itself to turn down. The practical way to shrink a PNG dramatically is converting it to a high-quality JPG (for photos and screenshots without transparency) or WEBP (which keeps transparency). This tool handles that re-encoding locally on your device, and lets you pick the quality level.
How to Compress PNG
- Add your PNG file(s).
- Choose the quality level — the output is re-encoded for real size savings.
- Click "Compress images" and download the results.
Frequently asked questions
Why is my PNG so large in the first place?
PNG stores every pixel losslessly. For graphics with few colors that's efficient, but for photos and full-screen screenshots it produces files many times larger than an equivalent JPG.
Will I lose transparency when compressing a PNG?
Compressing via JPG re-encoding replaces transparency with a white background; if your PNG relies on transparency, convert it to WEBP instead, which compresses well and keeps the alpha channel.
When should I keep the file as PNG?
Keep PNG for logos, line art, UI elements and anything that must stay pixel-perfect or transparent — compress photos and screenshots, where the savings are large and invisible.