Reduce JPG, PNG and WebP file sizes directly in the browser, no upload, no quality surprises.
Compression is not magic, it is a calculated trade-off between discarded information and final file weight. Understanding that trade-off helps you choose quality, format and the right moment to compress.
Paste the code into your HTML and the tool shows up on your page, without J-Kit's navigation and ads. It still runs in the browser of whoever visits your site.
<iframe
src="https://jkit.tools/embed/en-US/image-compressor"
width="100%"
height="600"
style="border:0"
loading="lazy"
title="Image Compressor"
></iframe>These references help contextualize formulas, standards, APIs and limitations used on this page. They do not replace professional validation when a result has legal, financial, medical or operational impact.
It depends on the compression level and format. Lossy formats like JPEG and WebP discard color information imperceptible to the human eye. At 75–90% quality, the difference is rarely visible, but aggressive compression below 60% introduces visible artifacts, especially on edges and gradient areas.
Presets
Your browser cannot encode AVIF. Use WebP. It is widely supported and saves about as much.
Images are processed entirely in your browser. No file is sent to any server.