Convert PNG to WEBP Instantly

Why this beats PNG to JPG for graphics

The usual reason to convert a PNG is size, and the usual destination is JPG. That works for photographs and fails for everything else: JPG has no alpha channel, so a transparent logo gains a white box, and JPEG's compression puts visible ringing around every hard edge and letter.

WEBP has neither problem. It carries a full 8-bit alpha channel, and its lossless mode compresses flat-colour graphics roughly 26% better than PNG while being mathematically identical to the original. Its lossy mode goes much further still and, at high quality settings, stays clean on text and edges in a way JPEG does not.

Lossy or lossless WEBP

Serving it on a site

Use a picture element with the WEBP first and the PNG as the img fallback, and keep explicit width and height attributes so the browser reserves the space and nothing shifts as the page loads. WordPress has accepted WEBP uploads natively since version 5.8; Shopify, Wix and Squarespace convert on their own CDN, so on those platforms you can simply upload the PNG.

Privacy

Nothing is uploaded. The file is decoded and re-encoded by your own browser using the Canvas API, so the image never leaves your device and there is no queue, no size cap and no account.