Image Compressor
Reduce image file sizes without losing quality. Supports JPG, PNG, WebP, GIF.
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JPG, PNG, WebP, GIF — multiple files supported
What the Image Compressor does
This tool reduces the file size of your images while keeping them looking as close to the original as possible. Add one image or a whole batch of JPG, PNG, WebP or GIF files, and the compressor rewrites them at a smaller size right inside your browser. Your pictures are processed locally with the Canvas API and the browser-image-compression library, so they are never uploaded anywhere.
Smaller images load faster on websites, slip under email and upload size limits, and take up less space in storage. For anyone running a blog, an online shop or a portfolio, compressing images is one of the simplest ways to speed up pages and improve the visitor experience.
Lossy compression and the quality setting
Most photographic compression is 'lossy', meaning it discards image data the eye is unlikely to miss in exchange for a much smaller file. The quality slider controls how aggressive that trade-off is. A setting around 70–85% usually cuts file size dramatically while keeping the image visually indistinguishable from the original.
Push the quality very low and you will start to see blockiness or fuzziness, especially around sharp edges and text. The sweet spot depends on the picture, so it is worth comparing the result against the original and nudging the slider until you are happy with the balance.
How to use it
Drag in or select your images, choose a quality level, and let the tool compress them. You will see the new file size for each picture so you can judge the saving, then download them individually or together. Batch mode lets you process many files in one go, which is ideal when you are preparing a set of images for a page or a gallery.