Compress PNG

Shrink PNG file sizes instantly and privately. Everything happens on your own device — nothing is uploaded to a server.

Drop your PNG file here

Accepted: .png · Max 40MB

Choose File

Files stay on your device — nothing is uploaded.

PNG is lossless, so quality can't be reduced the way JPG or WebP can — increasing the compression level here reduces the image's dimensions instead.

What is PNG compression?

PNG compression shrinks a PNG's file size by scaling down its dimensions — the main lever available in-browser, since PNG's lossless compression can't be selectively reduced the way JPG or WebP can. PNG is a lossless raster format designed for the web. It preserves every pixel exactly and supports full alpha-channel transparency, making it the standard choice for graphics, logos, and screenshots.

How to compress a PNG file

Choose a PNG file using the drop zone above (or drag and drop it in).
Adjust the compression level if you like, then click "Compress".
Click "Download" to save your smaller PNG file.

Why compress a PNG file?

A smaller PNG file uploads faster, loads faster on a website, and takes up less storage or email attachment space — often with no visible difference in quality.

Is this private?

Yes. This PNG compressor runs entirely in your browser using the Canvas API — your file is never uploaded to our servers, stored, or logged. Closing this tab discards everything.

Supported browsers

This converter works in all modern browsers, including Chrome, Firefox, Safari, and Edge, on both desktop and mobile (Android and iOS).

Frequently Asked Questions

How do I compress a PNG file?: Choose a PNG file using the drop zone or "Choose File" button above, adjust the compression level if you like, then click "Compress". Everything runs in your browser using the Canvas API, and you'll get a "Download" button for the smaller PNG file — no upload, no waiting on a server.
Is this PNG compressor free?: Yes. It's completely free with no sign-up, no watermark, and no limit on how many files you compress.
Are my files uploaded to a server?: No. Compression happens entirely inside your browser using the Canvas API. Your file is never uploaded, stored, or transmitted anywhere.
How much smaller will my file get?: PNG is a lossless format, so the Canvas API can't reduce its quality the way it can for JPG or WebP. At higher compression levels, this tool instead reduces the image's dimensions, which is the main lever available for shrinking a PNG in-browser.
Can I use this on my phone?: Yes. It works on any modern mobile browser on Android or iPhone, as well as desktop browsers like Chrome, Firefox, Safari, and Edge.
What is the maximum file size I can compress?: Because compression happens on your own device, the limit depends on your browser and device memory. We recommend keeping individual files under 40MB for the smoothest experience.

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What is PNG compression?

Frequently Asked Questions

How do I compress a PNG file?

Choose a PNG file using the drop zone or "Choose File" button above, adjust the compression level if you like, then click "Compress". Everything runs in your browser using the Canvas API, and you'll get a "Download" button for the smaller PNG file — no upload, no waiting on a server.

Is this PNG compressor free?

Yes. It's completely free with no sign-up, no watermark, and no limit on how many files you compress.

Are my files uploaded to a server?

No. Compression happens entirely inside your browser using the Canvas API. Your file is never uploaded, stored, or transmitted anywhere.

How much smaller will my file get?

PNG is a lossless format, so the Canvas API can't reduce its quality the way it can for JPG or WebP. At higher compression levels, this tool instead reduces the image's dimensions, which is the main lever available for shrinking a PNG in-browser.

Can I use this on my phone?

Yes. It works on any modern mobile browser on Android or iPhone, as well as desktop browsers like Chrome, Firefox, Safari, and Edge.

What is the maximum file size I can compress?

Because compression happens on your own device, the limit depends on your browser and device memory. We recommend keeping individual files under 40MB for the smoothest experience.