# Compress PNG to 1 MB > Compress a PNG image to 1 MB or less for email attachments and portals with a 1 MB limit. 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-1mb Shrink a PNG to 1 MB or less for email attachments and portals with a 1 MB limit. API: `POST /api/v1/jobs` with `"operation": "compress", "target_size": "1mb"` (paid plans). ## How to compress a PNG to 1 MB 1. **Add your PNG.** Drop one or more PNG files onto the compressor above, paste them, or click to browse. 2. **1 MB is preset.** The target is already set to 1 MB, 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 - 1 MB is comfortable: photos stay sharp at screen sizes, and only very high-resolution originals get a mild downscale. - PNG keeps logos and screenshots crisp at 1 MB, but photos have to be scaled down a long way. For photos, converting PNG to JPG reaches 1 MB at a much higher resolution. - 1 MB here means 1,000,000 bytes, a little under the 1,048,576 bytes some sites mean by 1 MB, so the result fits either way. - PNG compression runs entirely in your browser with WebAssembly, so nothing is uploaded and your files never leave your device. ## What fits in 1 MB PNG is lossless at heart, so what fits in 1 MB depends heavily on the content. | Content | Roughly fits | Notes | | --- | --- | --- | | Logo or flat graphic | ≈ 3,650 × 3,650 px (13 MP) | Few colours compress very well | | Screenshot | ≈ 2,830 × 1,770 px (5 MP) | After palette reduction | | Photo | ≈ 1,550 × 1,030 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 1 MB is typically for - Attaching several photos to one email - Websites and portals that cap uploads at 1 MB - Sharing high-quality photos quickly 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 300 KB](https://www.converterrr.com/compress-png-to-300kb): Larger web images - [Compress PNG to 500 KB](https://www.converterrr.com/compress-png-to-500kb): Hero images & forms - [Compress PNG to 2 MB](https://www.converterrr.com/compress-png-to-2mb): High quality under 2 MB Got a mix of formats? [Compress any image to 1 MB](https://www.converterrr.com/compress-image-to-1mb). ## PNG to 1 MB: frequently asked questions ### How do I compress a PNG to 1 MB? Drop the PNG onto the compressor above. The 1 MB target is already set, so just click Compress and download the result. ### Will the file be exactly 1 MB? It aims to land at or just under 1 MB. 1 MB here means 1,000,000 bytes, so it also fits sites that count 1 MB as 1,048,576 bytes. ### How much quality will I lose at 1 MB? 1 MB is comfortable: photos stay sharp at screen sizes, and only very high-resolution originals get a mild downscale. PNG keeps logos and screenshots crisp at 1 MB, but photos have to be scaled down a long way. For photos, converting PNG to JPG reaches 1 MB at a much higher resolution. ### My PNG is already smaller than 1 MB. 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 1 MB? Very large or detailed images are scaled down further to reach 1 MB. If the result is too small, pick a larger target. ### What is 1 MB typically needed for? Common reasons: attaching several photos to one email; websites and portals that cap uploads at 1 MB; sharing high-quality photos quickly. 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.