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Image Compressor

Compress images to reduce file size by quality setting or to a target size (KB), and export as JPG/WebP.

Compress JPG and PNG images online to shrink file size while keeping the visual quality solid - helping your website load faster, improving your PageSpeed score, saving storage space, and making emails easier to send. You see the file size before and after compression instantly, and everything runs entirely on your own device.

📖 See the detailed guide: How to Compress Images and Reduce File Size Without Noticeable Quality Loss

How to use Image Compressor

  1. Select or drag and drop the JPG/PNG image you want to compress.
  2. Drag the quality slider to balance file size against sharpness (70-85% is the typical range).
  3. Compare the before-and-after file size right on screen.
  4. Download the compressed image to your device.

What is image compression for?

Photos taken on a phone are often 3-8MB, way too large for posting online or emailing. Compression can shrink that down to a few hundred KB with a difference the naked eye can barely notice - your website loads faster, which helps SEO and user experience, while also saving bandwidth and storage.

What quality level should you choose?

For images posted to the web or social media, 70-80% keeps the file small while still looking good. For images that need fine detail (printing, product photos), go with 85-90%. Below 60%, the file gets very small but you may start seeing artifacts around text and sharp edges.

Which compresses better, JPG or PNG?

JPG compresses very well for photos with lots of colors and gradients. PNG is better suited to images with transparent backgrounds or graphics with few colors; if your PNG is actually a photo, converting it to JPG will make it much smaller.

Frequently asked questions

Does compressing an image reduce its quality?

Compression does lose some detail, but at 70-85% the naked eye can barely tell, while the file size drops significantly.

Is the image sent to a server?

No. All processing happens right in your browser, so your data is never sent to any server.

Can I compress multiple images at once?

You can process multiple images one after another quickly; since everything runs on your device, speed depends on your computer's specs rather than your internet connection.

Does image compression affect SEO?

Yes, positively. Lighter images help your page load faster - a factor Google uses for ranking - and improve your Core Web Vitals score.

🔒 Image Compressor runs entirely in your browser — the data you enter is not sent to any server. Free, no sign-up required. See145 free dev tools more.