Compress PNG
Original Utility SuiteCompress images and knock out backgrounds to transparency.
What is Compress PNG?
Compress PNG shrinks your image's file size and can optionally knock a background color out to transparency in the same pass. Pick the color to remove by clicking the preview, tune the tolerance for clean edges, then compress with a quality and maximum-dimension setting. It all happens in your browser — nothing is uploaded — and you get a before-and-after size comparison before you download.
How to use Compress PNG
Add your image
Drag a PNG, JPEG, or WebP onto the drop zone. It appears in the live preview over a checkerboard so you can see any transparency.
Optionally remove a background color
Turn on Remove background color, then click the preview to eyedrop the color to knock out, or pick it manually. Adjust the Tolerance slider until the background disappears cleanly with soft, feathered edges.
Set the compression
Choose a quality level and a maximum dimension to cap the width or height. Larger images are scaled down proportionally to fit that limit.
Pick an output format
Export as PNG to keep transparency, or JPEG for a smaller file with no alpha. While background knockout is on, PNG is used automatically since JPEG cannot store transparency.
Process and download
Click Process image to compress, then review the original-versus-result comparison with the exact byte sizes and percentage saved before downloading.
Common uses
- Shrink a large PNG so a page loads faster
- Turn a solid-color background into transparency for a logo or product shot
- Prepare a transparent PNG sticker or icon from a flat image
- Cut a screenshot down to a smaller file for email or chat
- Cap an oversized image to a sensible maximum resolution
- Convert a heavy PNG to a lighter JPEG when transparency isn't needed
Why choose FreeTools
100% private
Your files are processed inside your browser and are never uploaded to a server.
Free, no account
No sign-up, no watermark, no paywalled “premium” tier. Just open a tool and use it.
Instant
No upload, no queue, no server round-trip — work starts the moment you drop a file.
Runs in your browser
Built on open web standards. Works on any modern desktop browser, nothing to install.
No upload size caps
Nothing leaves your device, so there’s no server file-size limit — only your machine’s memory.
Yours to keep
Results download straight to your device in clean, standard file formats.