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Image to WebP Converter

Convert images to WebP/AVIF (or back to JPG/PNG) — batch, per-image quality, ZIP download and a copy-ready <picture> snippet.

image-to-webp.js

runs in your browser · nothing uploaded

Drop images here — or click to choose PNG, JPG & WebP — many at once. Nothing is uploaded; everything converts in your browser.

Output format

Quality 82% Drag to balance file size against sharpness — the preview updates live.

Max width (px) — optional

Your before / after preview appears here Add an image to see the original and the converted version side by side — drag the divider to compare.

$ ls ~/tools

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this tool is hand-coded by a WordPress developer — your site gets the same care. Hire me on Upwork