Private Browser Image Optimizer

Runs locally in your browser

Resize and compress one image

Your file is decoded by this browser and is not uploaded to Image Load Lab. Browser encoders vary, so record the browser and version when comparing results.

Choose or drop a JPEG, PNG, or WebP image
One file, up to the memory your device can handle.Output formatMaximum width (px)Quality: 82

How to use the result

Choose a representative source, set a maximum width based on its real layout slot, and export a small quality ladder instead of accepting the first result. Inspect gradients, text, faces, foliage, and transparent edges at the intended display size and at 100% zoom.

What this tool does not prove

A smaller output is not automatically acceptable, and browser encoders are not identical to server tools. The percentage compares bytes for this source and these settings only. Keep an untouched original, record the browser version, and test several image types before changing a publishing rule.

File privacy

The file is read with browser APIs and drawn to a canvas on your device. It is not submitted through a form or stored by Image Load Lab. Avoid opening confidential files on a shared device.