memegen

Image Compressor

Shrink the file size of any PNG, JPG, or WebP image right in your browser — free, instant, and private. Pick an output format and quality, optionally cap the width, and watch the before/after size update live so you can dial in the smallest file that still looks good. Your image never leaves your device.

Updated June 2026

How to compress an image

Drop in your image and the tool shows the original size immediately. Choose an output format — WebP gives the smallest files, JPEG is the most universally accepted, or keep your original format — then drag the quality slider. The compressed size and percentage saved update as you adjust, so you can stop at the best balance for your needs.

Need it smaller still? Set a max width to downscale the image at the same time. Reducing dimensions is often the single biggest size win, especially for photos straight off a phone or camera.

Lossy quality vs. resizing vs. format

Three levers control file size. Lowering quality (for JPEG and WebP) discards fine detail your eye barely notices — 70–85% is usually invisible. Reducing dimensions throws away pixels you may not need on screen. Switching format to WebP packs the same image into fewer bytes than JPEG or PNG.

PNG is lossless, so the quality slider doesn't apply to it — to meaningfully shrink a PNG, reduce its width or convert it to WebP or JPEG.

Frequently asked questions

Does this tool upload my images anywhere?

No. Compression runs entirely in your browser on the HTML canvas — your image is never sent to a server, so it's instant and completely private.

Which format should I choose for the smallest file?

WebP almost always produces the smallest file at a given quality and keeps transparency. Choose JPEG if you need maximum compatibility (it has no transparency and fills it with white). 'Keep' re-encodes in your original format.

Why didn't my PNG get smaller?

PNG is lossless, so the quality slider has no effect on it. To shrink a PNG, reduce its width or convert it to WebP or JPEG — both will produce a much smaller file.

Will compressing reduce image quality?

Lossy compression discards some detail, but at 70–85% quality the difference is usually invisible for photos. The live before/after size lets you find the lowest setting that still looks good to you.

Does lowering the width help?

Yes — often more than quality alone. If an image is far larger than it will ever be displayed, capping the width removes pixels you don't need and cuts the file size substantially.

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