Image compressor: shrink JPG, PNG and WebP without uploading
Make images smaller for your website, email or app. Choose quality, size and format, compare the result and download one image or a ZIP – all in your browser.
Why compress images?
Images are usually the heaviest part of a web page. Large photos slow down loading, use more mobile data and can lower your Google Core Web Vitals score, especially Largest Contentful Paint. Compressing and resizing images often makes a page load several times faster with no visible change in quality.
Which format should I use?
- WebP – usually 25–35% smaller than JPG at the same quality and supported by all modern browsers. Best for websites.
- JPG – best for photos when you need maximum compatibility, for example email attachments.
- PNG – keep it for logos, screenshots and images that need transparency. PNG is lossless, so the quality slider has no effect; convert to WebP for a smaller file.
Best settings for websites
For most website photos, choose WebP, quality 70–80% and a maximum width of 1920 px (or 1280 px for blog images inside a text column). Hero images rarely need to be wider than 2560 px. Product thumbnails can go down to 800 px.
Private by design
Unlike many online compressors, this tool does not upload your photos. Your browser decodes and re-encodes each image with the HTML canvas, so even private or client images stay on your device.
Frequently asked questions
Does this image compressor upload my photos?
No. Images are compressed in your browser on your own device. Nothing is uploaded to a server.
How much can I reduce image size?
Large photos from phones and cameras often shrink by 60–90% when resized to 1920 px and saved as WebP at 75% quality, with no visible loss.
Should I use WebP or JPG?
Use WebP for websites – it is smaller and supported by all modern browsers. Use JPG when you need the widest compatibility, such as email or older software.
Why did my PNG get bigger?
PNG is a lossless format, so re-saving it rarely makes it smaller. Choose WebP as the format to compress PNG screenshots and graphics. If an image cannot be made smaller, the tool keeps your original.
Is the image compressor free?
Yes, it is free with no signup, no watermark and up to 20 images at a time.
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