An image can look fine in a preview and still make a page unnecessarily heavy. Compressing it can help, but the smallest file isn't always the most useful one. Text, faces and fine edges need enough detail to stay clear.
Our image compressor exports JPEG or WebP at an adjustable quality setting. Start with a copy so you can compare the result with the original.
Choose a setting you can judge
- Select an image under 20 MB and 40 megapixels.
- Choose WebP or JPEG.
- Start at 80% quality and compress.
- Compare the file sizes and inspect the preview.
- Lower the quality a little if the result is still too large.
- Open the downloaded file where you plan to use it.
Look closely at small text, hair, shadows and smooth gradients. Compression problems often show up there before they're obvious in the rest of the image.
An 80% setting doesn't mean the file will be 20% smaller. The result depends on the source, format and browser encoder.
Resize a large source before chasing lower quality
A photograph several thousand pixels wide may be more than you need for a small card. Reducing its dimensions can be more useful than repeatedly lowering quality.
The compressor keeps the decoded dimensions. Use the image converter when you also need to resize. Keep the aspect ratio so the picture doesn't stretch.
Choose the right format for the background
WebP can keep transparency. JPEG cannot; this compressor fills transparent areas with white when exporting JPEG.
Check a transparent logo against both a dark and a light background. An unwanted fill or rough edge can be difficult to spot on a white preview.
The tool exports a still image. Animated sources can lose their motion, and original metadata may be removed. Keep the source if you need either of those properties.
Keep the original if the new file is larger
An already well-compressed image can grow when it's encoded again. If that happens, keep the smaller original unless you specifically need the new format.
Changing formats also won't recover lost detail. A blurry source will still look blurry after compression.
The work runs in your browser, so large images can use a lot of device memory. If a phone struggles with a file, try a smaller copy. Check the downloaded result at its intended display size before replacing the image on your site.
