Shrink JPG, PNG and WebP file sizes without losing visible quality.
JPG, PNG or WebP — processed entirely in your browser
The Image Compressor lets you reduce the file size of any JPG, PNG or WebP photo directly inside your browser, with no server upload and no waiting in a queue. Large photos from phones and DSLR cameras often weigh several megabytes, which slows down websites, fills up cloud storage and makes email attachments bounce. This tool re-encodes your image using the HTML5 Canvas API and lets you control the output quality with a simple slider, so you can find the exact balance between file size and visual sharpness that suits your project.
Compression works by re-drawing your image onto a canvas element and re-exporting it using the browser's built-in JPEG or WebP encoder at a quality level you choose. Lower quality values discard more of the fine colour detail that the human eye barely notices, which shrinks the file dramatically, while higher values preserve almost every pixel of the original. Because everything happens in JavaScript on your own device, your photos are never transmitted anywhere, which makes this approach ideal for sensitive personal photos, client work under NDA, or simply anyone who prefers not to hand images over to a third-party server.
Bloggers and online store owners use this tool to keep page-load times fast, since search engines increasingly reward sites that load quickly on mobile data. Students and job seekers use it to squeeze photos under the file-size limits of college portals and email systems. Developers use it to prepare lightweight placeholder assets for prototypes, and photographers use it to create quick web-ready previews of a shoot without touching the original RAW files.
For photographs with lots of gradients and skies, a quality setting around 70-80 usually keeps the image looking crisp while cutting the size by more than half. Screenshots and images with sharp text compress better as PNG, since JPEG compression tends to blur fine edges. Always keep a backup of your original file before compressing, since the process is lossy and cannot be perfectly reversed.
No. This tool only changes how efficiently the pixel data is stored; the width and height stay exactly the same unless you use the separate Image Resizer tool.
There is no daily limit. Because compression happens locally in your browser, you can process as many images as your device's memory allows, one at a time.
If you export as PNG, transparency is preserved. Converting to JPEG removes transparency because the JPEG format does not support an alpha channel.
No. The entire compression process runs in JavaScript on your own device, so the image file never leaves your computer or phone.
