Image Compressor
Shrink JPG, PNG and WebP files without leaving your browser.
Drop an image to compress
JPG, PNG, WebP or AVIF — compression happens on your device
About Image Compressor
Images dominate page weight, and an unoptimised photo straight from a phone camera can be several megabytes. Compressing before upload is the single biggest win available for page speed.
This compressor re-encodes your image at the quality level you choose, shows the before and after size side by side, and can optionally cap the largest dimension - all on your own device.
Frequently asked questions
Are my images uploaded?
No. Compression uses a canvas in your own browser, so the file never leaves your device.
Why did my PNG get bigger?
PNG is lossless. Re-encoding a already-optimised PNG can add bytes - convert it to WebP instead for a real reduction.
Does compression lose quality?
JPEG and WebP are lossy, so yes, but the quality slider lets you find the point where the difference stops being visible.