# Compress PNG to 20 KB > Compress a PNG image to 20 KB or less for the signature and photo fields on online application forms. Runs in your browser, so your files never leave your device. Free, no sign-up, no watermark. URL: https://www.converterrr.com/compress-png-to-20kb Shrink a PNG to 20 KB or less for the signature and photo fields on online application forms. API: `POST /api/v1/jobs` with `"operation": "compress", "target_size": "20kb"` (paid plans). ## How to compress a PNG to 20 KB 1. **Add your PNG.** Drop one or more PNG files onto the compressor above, paste them, or click to browse. 2. **20 KB is preset.** The target is already set to 20 KB, and each file is compressed to land at or just under it. You can switch to another size or a percentage to reduce by. 3. **Compress.** Click Compress. The PNG is processed in your browser; nothing is uploaded. 4. **Check and download.** Check the new size, then download each file or all of them as a ZIP. ## Good to know - 20 KB is tight. Expect a photo to be scaled down to a few hundred pixels across. That's normal for signature and ID-photo fields, which display small anyway. - PNG keeps logos and screenshots crisp at 20 KB, but photos have to be scaled down a long way. For photos, converting PNG to JPG reaches 20 KB at a much higher resolution. - 20 KB here means 20,000 bytes, so the result also fits forms that count 1 KB as 1,024 bytes. - PNG compression runs entirely in your browser with WebAssembly, so nothing is uploaded and your files never leave your device. ## What fits in 20 KB PNG is lossless at heart, so what fits in 20 KB depends heavily on the content. | Content | Roughly fits | Notes | | --- | --- | --- | | Logo or flat graphic | ≈ 520 × 520 px | Few colours compress very well | | Screenshot | ≈ 400 × 250 px | After palette reduction | | Photo | ≈ 220 × 150 px | Convert to JPG for far more | _Rough guide for square, 16:10 and 3:2 images. Real results depend on detail and colour count._ ## What 20 KB is typically for - Scanned signatures on exam, job and government application forms - Passport-style photos on forms that ask for a very small file - Avatars, icons and small thumbnails Limits vary by site and change over time; check the exact number where you're uploading. ## How PNG gets smaller Reduces the colour palette (lossy levels) and re-compresses at maximum zlib effort. [Compress PNG by quality level instead](https://www.converterrr.com/compress-png) ## Neighbouring sizes - [Compress PNG to 50 KB](https://www.converterrr.com/compress-png-to-50kb): ID photos & form uploads - [Compress PNG to 100 KB](https://www.converterrr.com/compress-png-to-100kb): 100 KB upload limits Got a mix of formats? [Compress any image to 20 KB](https://www.converterrr.com/compress-image-to-20kb). ## PNG to 20 KB: frequently asked questions ### How do I compress a PNG to 20 KB? Drop the PNG onto the compressor above. The 20 KB target is already set, so just click Compress and download the result. ### Will the file be exactly 20 KB? It aims to land at or just under 20 KB. 20 KB here means 20,000 bytes, so it also fits sites that count 1 KB as 1,024 bytes. ### How much quality will I lose at 20 KB? 20 KB is tight. Expect a photo to be scaled down to a few hundred pixels across. That's normal for signature and ID-photo fields, which display small anyway. PNG keeps logos and screenshots crisp at 20 KB, but photos have to be scaled down a long way. For photos, converting PNG to JPG reaches 20 KB at a much higher resolution. ### My PNG is already smaller than 20 KB. What now? Then it already fits, and compressing it further would only cost quality. Upload it as it is, or pick a smaller target if you need it smaller still. ### What if my PNG can't get down to 20 KB? Very large or detailed images are scaled down further to reach 20 KB. If the result is too small, pick a larger target. ### What is 20 KB typically needed for? Common reasons: scanned signatures on exam, job and government application forms; passport-style photos on forms that ask for a very small file; avatars, icons and small thumbnails. Limits vary by site, so check the exact number where you're uploading. ### Is my PNG private? Yes. It's compressed inside your browser and never uploaded.