Compress Images Online

How it works

This tool runs entirely in your browser, with no server upload. Add JPEG, PNG, or WebP images and click “Compress”; the tool analyzes each file and chooses suitable settings. Save the result when it is ready, or use the comparison view to adjust quality and colors.

JPEG compression

For JPEG files, the tool estimates the original quality from the quantization tables and caps automatic quality at 80. Images already below 80 are not lowered further by default. Higher values usually preserve more detail; lower values usually create smaller files.

For an even smaller file, consider converting to WebP. Avoid repeated lossy conversions because each pass can add artifacts.

PNG optimization

PNG files are analyzed for their color count. Images with fewer colors can use lossless processing, while other images can use a palette of up to 256 colors. You can also choose lossless processing explicitly.

When lossless mode is off, reducing the color count can make the palette smaller. Icons, logos, screenshots, and illustrations are often good candidates; photos and smooth gradients are usually better in JPEG, WebP, or AVIF.

WebP compression

Static WebP uses quality controls similar to JPEG. Animated WebP keeps its frames, looping, and frame delays, and can be inspected frame by frame in the comparison view.

Compress to a target size

JPEG, WebP, and AVIF can use a target size in KB. The tool searches several quality levels and keeps the highest-quality result that fits the limit; it does not resize the image.

Some images remain larger than an extremely small target even at the lowest quality. The interface reports this clearly and keeps the smallest result found.

Save compressed images

Save processed images individually or download all results at once. JPEG, PNG, and WebP files can be previewed before you save them.

Supported image formats

Compression mode supports JPEG, PNG, WebP, GIF, and SVG images, including animated GIFs. You can add up to 20 files per batch, with a maximum size of 50 MB per file.

Privacy and security

All image processing happens in your browser with WebAssembly. Image files are not uploaded to or stored by our processing service. We use Baidu Tongji and Google Analytics to understand website visits; these services may use cookies or similar technologies for analytics, but image files are never uploaded to them. Re-encoded images automatically have metadata—including EXIF, GPS, and camera information—removed. If the original is kept because re-encoding would make it larger, its metadata may remain.

Free to use

No registration, daily limits, or watermarks. Process as many batches as you need. Each batch can contain up to 20 files, and each file can be up to 50 MB.