How to Compress an Image and Reduce File Size
Large image files can slow uploads, take longer to share, and use more storage. Image compression reduces file size by encoding the image more efficiently, often with a trade-off between size and quality.
Why compress images?
- Speed up uploads
- Make files easier to share
- Reduce storage usage
- Prepare images for websites
Lossy and lossless compression
Lossless compression preserves the original image information while making the file more efficient. Lossy compression removes some information to achieve a smaller file. JPEG quality settings are a common example of lossy compression.
Compress an image in your browser
Use the free Image Compressor. Select an image, choose the quality level, and create a smaller JPEG file. The tool processes the selected image locally in your browser.
How much should you compress?
There is no single quality setting that works for every image. Photos can often tolerate some compression, while screenshots, text-heavy graphics, and logos may need higher quality or a different format.
Compression versus resizing
Compression changes encoding and quality. Resizing changes dimensions. If an image is both extremely large and high quality, combining moderate resizing with compression can reduce the final file size substantially.
FAQ
Will compression always make an image look worse?
No. Moderate compression can reduce file size while keeping quality visually acceptable. The right balance depends on the image and its intended use.