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WebP Tool

Compress images to WebP without uploading them

WebP is the sensible default for web images: smaller than JPEG at the same visual quality, with transparency and lossless modes JPEG can’t offer — and support across essentially every modern browser. This page runs the whole conversion locally on your device; not a single byte of your image leaves it.

Drop an image anywhere, or browse files

Supports WebP, JPEG, PNG, and AVIF up to 50MB. Processed offline.

Why choose WebP

WebP was designed by Google specifically for the web, and it shows: photographic images typically shrink well compared with an equivalent-quality JPEG, while flat graphics can use WebP’s lossless mode with alpha transparency. For the vast majority of website images, it offers the best effort-to-payoff ratio of any format today.

  • Broad support — every major modern browser displays WebP inline, including mobile.
  • Lossy and lossless — photos at a tuned quality value, or pixel-perfect graphics with transparency.
  • Fast encoding — your browser’s built-in encoder handles it, so results appear almost instantly.

Best WebP quality settings

Quality scales are encoder-specific, so treat numbers as starting points rather than guarantees. On this tool:

  • Balanced (quality 82) — the everyday choice for photos; visually indistinguishable from the original at a fraction of the size.
  • Web Ultra (quality 65) — the smallest WebP you can still defend, good for thumbnails and image-heavy pages.
  • Target file size — set a KB budget and the tool auto-tunes quality and scale to fit under it.

Drag the before/after slider on the result to confirm the quality before downloading. For the full reasoning, read how to compress images without losing quality.

How this WebP compressor works

Your browser decodes the dropped image into memory, re-encodes it through the canvas encoder at your chosen quality, and hands the result straight back. There is no upload step because there is no server in the loop — the same pipeline is described in compressing images online without uploading them.

WebP questions

For web use, usually yes: WebP produces smaller files than JPEG at similar visual quality, and it supports transparency and lossless encoding, which JPEG does not. JPEG remains the choice when an image must open in software you don’t control.
Start around 80–85 for photographs — that is what the Balanced preset (82) uses. Drop toward 65 when file size matters more than fine detail, and check the result with the before/after slider before downloading.
Essentially every browser shipped in the last several years renders WebP, including Chrome, Firefox, Safari and Edge on desktop and mobile. It is the safest modern format to default to.
No. Conversion happens entirely in your browser using your device’s own CPU. Once the page has loaded you could disconnect your network and the tool would keep working — nothing is ever sent anywhere.

Need a different format? Compare them all in WebP vs AVIF vs JPEG or go back to the main compressor.

Other formats

AVIF compressorJPEG compressorPNG compressor

Related guides

WebP vs AVIF vs JPEG: which image format should you use?A practical comparison of WebP, AVIF and JPEG — file size, quality, transparency and browser support — with a simple rule of thumb for choosing the right image format.How to compress images without losing qualityLearn the difference between lossless and visually lossless compression, which quality settings to use, and how to verify results so your images stay sharp while getting smaller.