Image Compression
Compress JPEG, PNG, and WebP images directly in the browser using the Canvas API. Choose format, quality, and max dimensions.
Drop an image here, or click to select
JPEG, PNG, WebP, GIF supported
All compression is done locally in your browser using the Canvas API. No images are uploaded to any server.
About this tool
Images typically account for the largest share of a web page's total transfer size. Unoptimized images slow page load times, waste mobile data, and negatively impact Core Web Vitals scores — particularly Largest Contentful Paint (LCP), which Google uses as a ranking factor. Reducing image file sizes is one of the highest-impact performance optimizations available for most websites.
Modern image formats offer significant compression improvements over JPEG and PNG. WebP, developed by Google, provides 25–35% smaller files than JPEG at equivalent perceptual quality for photographic images, and 25–34% smaller than PNG for graphics with transparency. AVIF (based on the AV1 video codec) compresses better than WebP but has somewhat lower browser support. For a given quality level, choose the format that produces the smallest file size while meeting your browser support requirements.
Compression quality is a trade-off between file size and visual fidelity. For photographs displayed at typical screen sizes (under 2000px wide), quality settings of 75–85% in JPEG or equivalent WebP are typically indistinguishable from lossless compression by most viewers. For images containing text, diagrams, or sharp edges with few colors, lossless compression (PNG or lossless WebP) preserves clarity better than lossy formats. Always test compressed images at the actual display size rather than at 1:1 pixel size — compression artifacts are much less visible at normal viewing scale.