Convert JPEG images to WebP format instantly in your browser. According to Google's compression study, WebP produces files 25-34% smaller than JPEG at equivalent perceptual quality. SizeMyPic runs entirely client-side — no files are uploaded to any server.
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Supports JPEG, PNG, WebP, and SVG
Google's WebP study demonstrates 25-34% file size reduction versus JPEG at the same SSIM quality index. For a typical 500KB JPEG, that means saving 125-170KB per image.
Images account for ~50% of average page weight (HTTP Archive). Converting JPEG to WebP directly improves Core Web Vitals — especially Largest Contentful Paint (LCP), a Google ranking signal since 2021.
Convert hundreds of JPEGs to WebP in a single session. SizeMyPic processes all images in parallel using the browser's Canvas API, then packages results into a downloadable ZIP archive.
WebP images are 25-34% smaller than JPEG at equivalent perceptual quality, according to Google's compression study. The exact savings depend on image content — photographs with complex textures see the largest reductions. At quality 80, a 1MB JPEG typically converts to a 650-750KB WebP.
At equivalent quality settings (e.g., quality 80), WebP and JPEG are visually indistinguishable to the human eye. WebP achieves smaller files through more efficient entropy coding (arithmetic vs. Huffman) and better predictive coding, not by discarding more visual information.
Yes. As of 2023, WebP is supported by Chrome, Firefox, Safari (14.1+), Edge, and Opera, covering over 97% of global users according to CanIUse. It is safe to use WebP as the primary image format for web content.