Reduce PNG File Size
Make PNG files genuinely smaller without losing transparency. Pick a colour reduction level or enable aggressive PNG compression — everything runs locally.
Files never leave your device
Drag & drop images here
or click to browse · paste with ⌘V
Tip: copy an image and paste anywhere on the page
Scale by percent
Scaling down image dimensions usually creates the biggest file size reduction.
Compression preset
Quick start — tweak below if you like
PNG uses lossless compression. Resize or convert to WEBP/JPG for smaller files.
Auto-tunes quality. JPG/WEBP/AVIF only.
Add images to begin
Why use this compressor?
- Real PNG size reduction via optional colour quantization and dithering
- Metadata (EXIF, colour profiles, extra chunks) stripped on re-encode
- Transparency preserved · we never ship a larger 'compressed' file
How it works
- 1Drop your PNG images into the box above
- 2Open Advanced options and pick a colour reduction (256/128/64) or enable Aggressive PNG compression
- 3Click Compress and download the smaller PNG — original is kept if no real reduction is possible
Related compression tools
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View all tools →Frequently asked questions
Can PNG files really be made smaller?
Often yes — re-encoding strips metadata, and our optional colour reduction (256/128/64 colours) plus dithering can shrink PNG files significantly. If a PNG is already optimised we keep your original instead of shipping a larger file.
Will transparency be preserved?
Yes. PNG transparency (alpha channel) is preserved through every reduction mode, including colour quantization and dithering.
What if my PNG can't be made smaller?
We never lie: if the re-encoded output is larger than your original, we keep the original automatically and label it 'Already optimized'. For photos, WEBP or JPG will almost always create a much smaller file.
Are my images uploaded anywhere?
No. All compression happens locally in your browser using the Canvas API. Your files never leave your device.
Is the compressor free?
Yes — fully free, unlimited, no account, no watermarks.
Does it work on mobile?
Yes. The compressor is fully responsive and runs on any modern phone, tablet or desktop browser.