Workflow guide
Dither PNG Online
Dither PNG online without desktop software — upload a PNG, apply any of 13 dithering algorithms, preview live, and export. Diffused Editor processes PNG files entirely in your browser for complete privacy.
Quick answer: To dither a PNG online, open Diffused Editor, upload your PNG (up to 10 MB free), choose an algorithm, preview, and download. Free tier exports 50% JPEG; Pro unlocks full-resolution lossless PNG and WebP export.
Why dither PNG files?
PNG is lossless — ideal when you need sharp edges, transparency, or pixel-perfect game art before dithering. Dithering reduces color count while preserving perceived depth, making PNG sources perfect for retro palettes, halftone print prep, and indexed-color workflows.
Free vs Pro PNG export
| Feature | Free | Pro |
|---|---|---|
| Upload PNG | ✓ up to 10 MB | ✓ up to 15 MB |
| Live preview | ✓ all 9 free algorithms | ✓ all 13 algorithms |
| Download format | 50% JPEG | 100% PNG, WebP, JPEG |
| Lossless PNG export | — | ✓ |
How to dither a PNG online
- Open diffusededitor.com.
- Upload your PNG — drag, drop, or paste.
- Select an algorithm (try Auto-Tune for a quick start).
- Choose PNG in the footer format selector (Pro required for download).
- Click HQ Download for full-resolution lossless PNG.
For JPG sources, see how to dither an image online. For privacy details, read dither without uploading.
Frequently asked questions
Can I dither a PNG online for free?
Yes. Diffused Editor previews PNG dithering free with all nine free algorithms. Free downloads are 50% JPEG; lossless full-resolution PNG export requires Pro.
Does dithering PNG online reduce quality?
Dithering intentionally reduces color count for artistic effect. Pro PNG export is lossless relative to the dithered result — no additional JPEG compression artifacts.
Are my PNG files uploaded to a server?
No. All processing is client-side. Your PNG bytes never leave your device.
Dither your PNG now — free preview, Pro lossless export.
Open Diffused EditorExplore all algorithms in our image dithering guide.