# Compress PNG

> Compress Portable Network Graphics (PNG) files online for free. The compressor reduces the colour palette (lossy levels) and re-compresses at maximum zlib effort. Runs in your browser, so your files never leave your device. Or pick an exact size, like 20 KB or 50 KB.

URL: https://www.converterrr.com/compress-png

- Compression: lossless or lossy, runs in the browser (nothing is uploaded).
- API: `POST /api/v1/jobs` with `"operation": "compress"` and an optional `compression_level` or `target_size` (paid plans).
- Format: [PNG converter](https://www.converterrr.com/png-converter), [Compress images](https://www.converterrr.com/compress-images).

## What compression does to PNG

Reduces the colour palette (lossy levels) and re-compresses at maximum zlib effort.

- **Light:** Lossless or near-lossless: re-compresses as efficiently as possible at full resolution.
- **Balanced (default):** The default: looks the same for most uses, and typically 40–70% smaller.
- **Strong:** Smallest file: lower quality, and large images are downscaled.

Need it much smaller? For photos without transparency, JPG is many times smaller than even a well-compressed PNG. [Convert PNG to JPG](https://www.converterrr.com/png-to-jpg).

## Common sizes

- [Compress PNG to 20 KB](https://www.converterrr.com/compress-png-to-20kb): Signatures & tiny photos
- [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
- [Compress PNG to 200 KB](https://www.converterrr.com/compress-png-to-200kb): Web images & listings
- [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 1 MB](https://www.converterrr.com/compress-png-to-1mb): Email & portal uploads
- [Compress PNG to 2 MB](https://www.converterrr.com/compress-png-to-2mb): High quality under 2 MB

## How to compress PNG

1. **Add your PNG files.** Drag and drop PNG files onto the compressor, paste them, or click to browse. You can add several at once.
2. **Pick a level or a target.** Balanced is selected and suits most files. Choose Light to stay closer to the original or Strong for the smallest file, or set a target size or a percentage to reduce by.
3. **Compress.** Click Compress. Your PNG files are processed right in your browser, usually in seconds.
4. **Download.** Download each smaller PNG, or everything at once as a ZIP.

## Good to know

- PNG is lossless, so the savings come from re-compressing the pixel data harder and, on Balanced and Strong, reducing the colour palette. That's usually invisible on screenshots, logos and illustrations.
- Photos saved as PNG are big by nature. If you don't need transparency, converting the PNG to JPG or WebP shrinks a photo far more than any PNG setting can.
- Need to meet an upload limit? Set a target size (or a percentage to reduce by) in the compressor and the image is compressed to fit, downscaling it if it has to.
- PNG compression runs entirely in your browser with WebAssembly, so nothing is uploaded and your files never leave your device.

## About the PNG format

PNG is a lossless raster format that keeps every pixel exactly as it was and supports full alpha transparency.

|  | PNG |
| --- | --- |
| Full name | Portable Network Graphics |
| Type | Image |
| Extensions | .png |
| MIME type | image/png |
| Best for | screenshots, logos, UI assets and any graphic that needs sharp edges or a transparent background |
| Properties | lossless, transparency, open standard |

## Compress other images

[Compress JPG](https://www.converterrr.com/compress-jpg), [Compress WebP](https://www.converterrr.com/compress-webp), [Compress AVIF](https://www.converterrr.com/compress-avif), [Compress GIF](https://www.converterrr.com/compress-gif), [Compress HEIC](https://www.converterrr.com/compress-heic), [Compress TIFF](https://www.converterrr.com/compress-tiff), [Compress SVG](https://www.converterrr.com/compress-svg)

## Compressing PNG: frequently asked questions

### How do I compress a PNG file?

Drop the PNG onto the compressor above, keep Balanced or pick another level, and click Compress. Download the smaller PNG when it's done; it usually takes a few seconds.

### Does compressing PNG reduce quality?

On Light it's lossless or near-lossless. Balanced and Strong trade a little fidelity for a much smaller file, usually without visible difference on Balanced.

### How much smaller will my PNG get?

Screenshots, UI graphics and illustrations often shrink by half or more once the palette is reduced. Photos stored as PNG shrink less, so converting them to JPG or WebP is far more effective.

### Can I compress PNG to a specific size?

Yes. Set a target size in the compressor, or a percentage to reduce by, and the file is compressed to land at or just under it. Common sizes like 20 KB, 50 KB, 100 KB or 200 KB are listed on this page with the target preset.

### Is it safe to compress PNG files here?

Yes. PNG files are compressed inside your browser with WebAssembly and never uploaded to a server.

### Is the PNG compressor free?

Yes. Compression is free with no watermark and no sign-up, within the same daily allowance as conversions.

### Should I convert my PNG instead?

Sometimes. For photos without transparency, JPG is many times smaller than even a well-compressed PNG. The PNG to JPG converter does that in one step.