Compress Image for Google PageSpeed — Free Online

Separate image transfer weight from the rest of page loading. A small file may still be discovered late, compete with other requests or wait for rendering work. Google’s LCP optimization guide explains that the loading process has several stages. This compressor changes an image file; it does not modify the page’s request order, cache headers, scripts or layout.

Check the rendered dimensions and display density before reducing pixels. A wide hero can need more detail than a small article card. Avoid trading visible blur for a smaller test result. If you need several widths for responsive delivery, export and test those variants deliberately with Resize Image; this page produces one output per run rather than configuring a responsive image element.

Replace the intended asset, confirm that the page is actually serving the new version, and rerun the same performance scenario. Compare visual quality as well as the transfer change. Compress Image for WordPress provides a publishing-oriented workflow when that is your platform. Compression alone cannot guarantee a score, search ranking or Core Web Vitals result, and the tool does not run a live audit of your site.

Open one JPG, JPEG, PNG or WebP and review the preset before starting. A target is a maximum file budget, not an exact output weight. These pages use decimal units: 1 KB is 1,000 bytes and 1 MB is 1,000,000 bytes. You can change the target, select the output format and switch optional resizing on or off. Where a maximum long edge is preset, both dimensions scale together and smaller sources are not enlarged. Use Resize Image first when an exact canvas or crop is required.

The compressor tries encoding settings and measures their output. JPEG and WebP can discard detail; PNG compression may reduce the color palette. A demanding byte budget can also trigger proportional downscaling, even after you choose starting dimensions. The result shows the final dimensions and whether the maximum was met. An unsuccessful attempt remains clearly marked; choosing a bigger budget or changing dimensions may be necessary. JPEG puts transparency on white. For HEIC or AVIF, use Image to JPG before opening the result here.

Compare fine text, edges and important details before downloading. A smaller number is useful only if the image remains suitable for its destination. Return to the original when trying another setting, rather than repeatedly compressing the last copy. An already-fitting source is returned unchanged, including metadata, only when its format and dimensions also need no change. Processing is free and local to your browser, without signup or image uploads to our processing servers. The tool handles one file at a time and does not replace files in your library, upload to another account or submit a form for you.