This tool is free to use
If it saved you some time, consider buying me a coffee to support future updates.
Buy me a coffeeThis tool converts a whole batch of JPG, PNG, or BMP images to WebP at once, directly in your browser, and shows you exactly how much file size you've saved in the process. WebP typically produces smaller files than JPEG or PNG at equivalent visual quality, which makes it a common choice for speeding up page load times.
Drag and drop your images (or click to select), hit convert, and download everything as a single ZIP. Nothing is uploaded anywhere — each image is decoded and re-encoded locally using the browser's own canvas engine.
The savings summary after conversion shows your total original size, total WebP size, and the percentage and megabytes saved — useful if you're documenting a page-speed improvement for a client or stakeholder.
Yes, completely free with no account, watermark, or limit on how many images you convert.
No. Every conversion happens locally in your browser using the Canvas API — your files never leave your device.
JPG, PNG, and BMP are all supported as input. Output is always WebP.
It varies by image, but WebP commonly produces files 25–35% smaller than equivalent-quality JPEGs. The tool shows your exact savings percentage after each batch.
Conversion uses a quality setting tuned to balance file size and visual fidelity, similar to a standard "high quality" JPEG export — suitable for most web use without a visible quality loss.