Image Compressor

Shrink image file sizes

Large images slow down web pages and fill up storage. This compressor re-encodes your image at a quality you choose, cutting the file size — often dramatically — while keeping it looking good. It shows the before-and-after sizes and the percentage saved, and it all happens in your browser, so your images are never uploaded.

Finding the right quality

For photos, 70–80% quality is usually indistinguishable from the original to the eye but a fraction of the size. Drop lower for thumbnails or when size matters most; go higher when detail is critical. Choosing WEBP output squeezes out even more savings than JPG at the same visual quality.

FAQ

Is this lossless?

No — JPG and WEBP compression is lossy, meaning some image data is discarded to save space (that's how the file gets smaller). At sensible quality settings the loss is invisible. Keep your original if you need a pristine master copy.

Are my images uploaded anywhere?

No, compression happens entirely in your browser using the canvas API, so your images never leave your device. That makes it safe for private photos, screenshots, and confidential documents.

Is the image compressor free?

Yes, it is completely free with no sign-up, no watermark, and no limit on the number of images you compress. You only download the result you choose to keep.

What image formats does it support?

It reads common formats like JPG, PNG, and WEBP, and lets you export as JPG or WEBP. WEBP usually produces the smallest file at the same visual quality, so it is a good default when your destination supports it.

Does compressing reduce the pixel dimensions?

No, it keeps the same width and height and reduces file size by re-encoding at a lower quality. If you also need fewer pixels, resize the image first and then compress it here.

Does it work on mobile?

Yes, it runs in any modern mobile browser, so you can shrink a photo on your phone before uploading or emailing it.