COMPRESS PNG
ONLINE FREE
Reduce PNG file size directly in your browser. Choose lossless to compress without losing quality or lossy to reduce PNG size by up to 70%.
DROP PNG FILES HERE
or click to browse • PNG only • max 20 files • 25.00 MB each
PNG FILE SIZE
REDUCER
Professional-grade PNG optimizer that compresses files entirely in your browser — no upload, no ads.
100% Private & Ad-Free
Compress PNG files without ads or tracking. All compression happens client-side using WebAssembly — your files never leave your browser.
Lossy & Lossless Compression
Choose lossless to compress PNG without losing quality, or lossy mode to reduce PNG file size by up to 70%.
Batch PNG Compression
Drop multiple PNG files at once. Compress them all in a single batch and download as a ZIP.
WASM-Powered PNG Optimizer
Uses OxiPNG WebAssembly engine — the same technology behind Google Squoosh — for professional-grade PNG file size reduction.
Free PNG Compressor Online
No accounts, no limits, no watermarks. Compress PNG online for free — just drag, compress, and download.
Works Offline
Once loaded, works without internet. Perfect for compressing sensitive PNG images privately.
NEED MORE TOOLS?
TRY mango FOR FREE
Mango gives you a complete Twilio toolkit — pricing calculator, error translator, campaign checker, and more — all in one app.
FREQUENTLY ASKED
How do I compress PNG online for free? +
Simply drag and drop your PNG files into the tool above. Choose lossless or lossy mode, then click Compress. All PNG compression happens in your browser — no upload, no signup, completely free.
Can I compress PNG without losing quality? +
Yes. Lossless mode compresses PNG files without losing any quality — the image is pixel-identical before and after. It typically reduces PNG file size by 5–25% by optimizing encoding and stripping unnecessary metadata.
How much can I reduce PNG file size? +
Lossless mode reduces PNG size by 5–25%. Lossy mode can reduce PNG file size by 40–70% — you can easily compress PNG to 100KB or smaller depending on the original image. The lossy compressor uses color quantization similar to pngquant.
Are my files uploaded to a server? +
No. This free PNG compressor runs entirely in your browser using WebAssembly. Your files never leave your device — no server upload, no cloud processing, no data collection. It even works offline.
Does this PNG compressor support batch compression? +
Yes. You can compress up to 20 PNG files at once with batch PNG compression. Each file can be up to 25 MB. Download all compressed results as a single ZIP file.
What technology powers this PNG file size reducer? +
The lossless optimizer uses OxiPNG compiled to WebAssembly — the same engine used by Google's Squoosh app. The lossy compressor uses an advanced color quantization algorithm that reduces the color palette while preserving visual quality.