Which format for what
- WebP: the lightest for websites and online shops.
- JPG: for photos, and anywhere no other format is accepted.
- PNG: lossless, for screenshots, logos and text, and when quality matters more than size.
For JPG and WebP you set the quality with a slider: a lower number means a lighter file. For most website pictures a figure between 70 and 80 leaves no difference you can see.
If the picture came from a camera or a phone, bringing it down to 1920 or 1280 pixels does the most for its size; websites and social pages don't show a picture larger than that.
How to make a picture lighter
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Open the tool
After signing in, open “Compress and convert images”.
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Give it the pictures
Up to twenty at once.
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Choose the format and quality
WebP, JPG or PNG.
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Download
See the sizes before and after, and take the pictures.