Reduce image file size without installing software
Large images can slow webpages, exceed form upload limits and make email or messaging attachments unnecessarily heavy. This compressor lets you re-encode common images at a quality level you choose, then compare the output before downloading it.
How to compress an image
- Select a JPG, PNG or WebP image supported by your browser.
- Choose the output quality. Lower values normally reduce file size more aggressively.
- Run the compression and download the optimized image.
How to choose image quality
Photographs usually respond well to moderate lossy compression because natural texture can hide small encoding changes. Logos, screenshots, interface captures and images containing small text need more caution because compression artifacts are easier to notice around hard edges.
For website use, compare the compressed file at the actual size it will appear on the page. A visually clean 1200-pixel image is usually more useful than a huge original compressed only slightly.
Browser-side privacy
The compression operation runs in your browser for supported formats. That means the image does not need to be uploaded to UVs Tool Hub simply to perform the compression task.
Compression is different from resizing
Compression reduces the amount of data used to store the image. Resizing changes its pixel dimensions. For the best website optimization, you may want to resize an image to the dimensions you actually need and then compress the resized version.
Frequently asked questions
Are my images uploaded when I compress them?
No. This image compressor processes supported images in your browser.
Which image formats can I compress?
The tool is designed for common browser-readable image formats such as JPG, PNG and WebP.
What quality should I choose?
For photographs, start around 75–85 and compare the result. Use a higher value when fine detail matters more than file size.
Does compression resize the image?
Compression changes encoding quality; it does not intentionally change pixel dimensions unless the tool interface says otherwise.