Compress PNG Live
Losslessly recompress PNGs — never inflated, originals kept when smaller.
Drop images here
or · paste works too
PNG images · batch up to 50 · 100 MB each
Processed on your device — nothing uploaded
No files yet. Drop some above to get started.
PNG is a lossless format, which makes compressing it honest work: there is no quality dial to quietly turn down. This tool re-encodes your PNG in the browser and keeps whichever file is smaller — and when a PNG is already well-optimized, it says so (“Already optimized — original kept”) and hands back your original untouched instead of a bigger file.
PNG stays PNG here: nothing is converted behind your back, the pixels stay identical, and nothing is uploaded — the whole job runs on your device.
How to use Compress PNG
- 1
Open Compress PNG
Load this page — everything runs in your browser, so there's nothing to install.
- 2
Add your files
Drag and drop PNG images onto the workspace, or click to browse. Add several at once for batch processing.
- 3
Adjust the settings
Fine-tune the output with the options panel and watch the result update live.
- 4
Download your result
Save each file or grab everything as a single zip. Your originals are never uploaded.
When PNG compression helps — and when it can’t
- Fresh exports from screenshots and design tools often carry inefficient encoding and metadata — re-encoding trims that.
- PNGs that have already been optimized (by a build pipeline or another optimizer) are usually as small as lossless PNG gets — the tool detects this and keeps your original rather than inflating it.
- Photographic PNGs are the wrong format entirely: stored losslessly they stay huge no matter which optimizer touches them.
The bigger win: choose a better format
For screenshots and UI graphics headed to the web, the real breakthrough isn’t a tighter PNG — it’s WebP. Convert to WebP keeps the transparency and the crisp edges while typically cutting the file dramatically. Photos that ended up as PNG belong in JPG or WebP instead. Our guide to reducing image file size walks through the whole decision.
The other honest lever is resolution: fewer pixels means a smaller file with no format tricks at all. If the PNG is displayed smaller than its stored size, scale it down first with the Resize Image tool.
Frequently asked questions
Are my files uploaded to a server?
No files are sent anywhere. Compress PNG handles images directly on your device, which keeps private photos private and makes the tool fast.
Is Compress PNG free?
It's free and stays free. Use Compress PNG as often as you like, for personal or commercial work, with no watermark and nothing to sign up for.
Which formats can I use?
PNG images — those are the inputs Compress PNG understands. Drop up to 50 at once and download the results together.
Why didn’t my PNG get smaller?
Because it was already optimized. PNG is lossless, so there’s a hard floor on how small the same pixels can get — when re-encoding would come out larger, the tool keeps your original and says “Already optimized — original kept” instead of inflating the file.
Does compressing a PNG lose quality?
No. PNG compression is lossless — the output contains exactly the same pixels as the input. Only the encoding and metadata change; there is no quality slider to trade away.
How do I make a PNG dramatically smaller?
Change something other than the encoding: scale the dimensions down, or switch format. Screenshots and UI graphics convert beautifully to WebP with transparency kept — use Convert to WebP — and photos belong in JPG or WebP.
Will my transparent background survive?
Yes — the output is still a PNG with its full alpha channel, whether the tool re-encoded it or kept your original.
Can I compress an animated PNG or GIF here?
No — this tool handles still PNGs. For animations, the Optimize GIF tool recompresses every frame with the motion intact.