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PNG Compressor

PNG files are often far larger than they need to be. Shrink them by re-encoding to WebP (keeps transparency) or JPG, locally in your browser.

Runs in your browser — files never leave your device

Free · No sign-upOutputs WebP, JPG
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How to use Compress PNG

  1. Add the PNG files you want to shrink.

  2. Choose WebP to keep transparency, or JPG for maximum compatibility.

  3. Set the quality and click Compress PNG.

  4. Review the savings and download.

About this tool

PNG compression is lossless, so a PNG cannot simply be 'saved at lower quality'. The practical way to shrink a large PNG is to re-encode it in a modern lossy format: WebP keeps transparency and usually cuts the size dramatically, while JPG is the right choice when maximum compatibility matters and the image has no transparency. This tool shows the exact size difference so you can pick the format that fits.

PNG screenshots in particular tend to balloon in size because screen-capture tools save every pixel losslessly — this tool is a quick way to bring a folder of screenshots down to a manageable size before sharing or archiving them.

Common ways people use this

  • Shrinking large screenshots before adding them to documentation, tickets, or a shared drive
  • Reducing the size of a transparent logo or icon exported from a design tool as PNG
  • Getting a batch of PNGs under an upload or email attachment size limit

Tips for better results

  • For screenshots and UI graphics, WebP at 90%+ quality usually gives the best balance of small size and crisp detail.
  • If the destination absolutely requires JPG and the PNG has transparency, preview the background color choice before downloading — it becomes a permanent part of the image.

Frequently asked questions

Why can't the PNG stay a PNG and just get smaller?
PNG is lossless — its size is determined by the image content. Meaningful reductions require either shrinking the dimensions or re-encoding in a lossy format such as WebP or JPG.
Will I lose transparency?
Not if you choose WebP output — it fully supports transparency. JPG output fills transparent areas with a background color you choose.
Which output should I pick for screenshots?
WebP at 90% quality keeps text crisp and usually cuts screenshot size by well over half. Use JPG only if the destination cannot accept WebP.
How much smaller will a typical PNG screenshot get?
It varies with content, but screenshots with lots of flat color or white space often shrink by 60–90% when converted to WebP, since PNG's lossless format doesn't take advantage of those patterns as efficiently.
Can I compress several PNGs in one batch?
Yes, add multiple files together — each is compressed with the same format and quality setting you choose.

Related tools

Other tools people commonly use alongside this one.

Image Compressor

Shrink image file sizes by re-encoding at a quality level you control. Works with JPG, PNG and WebP, entirely in your browser.

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PNG to WebP

Convert PNG graphics to WebP while keeping transparency. WebP usually stores the same image in a fraction of the PNG's size.

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PNG to JPG

Turn PNG images into smaller JPG files. Choose the quality level and the background color used for transparent areas — all processed locally.

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Image Resizer

Resize images to exact pixel dimensions or by percentage. The aspect ratio is locked by default so photos are never accidentally stretched.

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