Compress Image Online Free

No. Everything runs entirely in your browser using the Canvas API. Your images never leave your device — 100% private.

You can compress or convert between JPG, PNG, WebP, and AVIF. Input accepts any image format your browser supports, including GIF, BMP, and HEIC on compatible devices.

Typically 50–90% without visible quality loss for photos at 75–85% quality. PNG files with gradients may compress less. Preview the result before downloading.

We recommend files under 20MB for best performance. Larger files may be slow to process depending on your device and browser.

Yes — enter a max width in pixels and the image will be scaled down proportionally before compression. Leave it blank to keep the original dimensions.

You can compress and convert between JPG, PNG, WebP, and AVIF. The tool accepts any image format your browser supports as input, including GIF and BMP.

Most JPEG and WebP photos compress by 50–90% at a quality setting of 75–85 without visible quality loss. PNG files with flat colours or transparency may compress less. Always preview the result before downloading.

At quality settings of 75–85%, compression is typically imperceptible to the human eye for photos. Use the before/after slider to compare the original and compressed versions side by side before deciding to download.

Lossy compression (used by JPEG and WebP) permanently removes some image data to achieve smaller file sizes, but the reduction is usually invisible at moderate quality settings. Lossless compression (used by PNG) reduces file size without discarding any data, but typically achieves less size reduction on photos.

Currently the tool compresses one image at a time. Compress the first image, download it, then load the next one. This keeps processing fast and ensures you can preview each result.

We recommend images under 20MB for best performance. Larger images may be slow to process depending on your device and browser. The tool imposes no strict server-side limit since all processing is local.

No. All image processing happens entirely in your browser using the Canvas API. Your images never leave your device and are not stored or transmitted anywhere.