Choose the right dimensions before compressing
An image cannot become efficient only through a quality setting. Start with the size it will actually occupy on the page, then compare the original and compressed versions at that display size.
Quick image compression workflow
- Keep the original source file.
- Resize an oversized source when the page does not need all of its pixels.
- Compress, compare the output size, and inspect visual detail before publishing.
Tools and guides
Compress Images Online
Compress supported JPG and PNG files in the current browser tab.
Image Compression for Websites
Choose dimensions, format, and quality before publishing.
Compress JPG in Browser
Review photo compression before using the output.
Compress PNG in Browser
Check transparency, file size, and sharp UI edges.
Why Compression Can Make a File Larger
Keep the smaller file instead of assuming a new export wins.
Browser Image Compression Limits
Use practical limits for high-resolution assets and mobile devices.