How it works
Use this tool with clear assumptions
Image compression is one of the easiest ways to improve page speed because images are often the largest assets on a page.
Compression runs locally with the Canvas API. Results vary by image type, size, detail, and selected output quality.
Formula / logic
Images are decoded in the browser, optionally resized, then exported at the selected quality and format.
Example
Resize a 2400px hero image to 1200px WebP at 80% quality before uploading to a website.