Compress Image
Compress JPG, PNG and WebP images to shrink file size while keeping them looking great — in your browser.
Keeps original format (PNG stays PNG, JPEG stays JPEG).
Drop images here or click to upload
JPG, PNG, WebP · Multiple files supported
About the Compress Image
Compressing an image reduces its file size by storing it more efficiently, so it uploads faster, fits email and form limits, and makes web pages load quickly — without obviously changing how it looks. This tool compresses JPG, PNG and WebP images right in your browser, with control over the balance between smaller size and higher quality.
Unlike resizing, which changes dimensions, compression keeps the image the same size on screen but trims the data behind it. Photographs in particular can shrink dramatically with barely perceptible quality loss, because the eye does not notice the fine detail that compression discards. You decide how far to push it: maximum compression for the smallest file, or a lighter touch when the image must stay pristine.
Because it runs locally in your browser, your images are never uploaded to a server, keeping them private and avoiding transfer delays. There is no signup and no watermark. Add an image, choose a quality level, and download a much smaller version in seconds.
Looking for more options? Open the full Image Compressor — it’s the same tool with every feature.
Frequently Asked Questions
How do I compress an image?
Upload the image, choose a compression level (trading file size against quality), and download the smaller result. The tool re-encodes the image more efficiently to cut its size, all within your browser in just a few seconds.
What is the difference between compressing and resizing an image?
Resizing changes the image’s dimensions (its width and height in pixels); compressing keeps the dimensions but reduces the file size by storing the data more efficiently. You can do both — resize to the size you need, then compress to shrink the file further.
Which image format compresses best?
JPG compresses photographs very efficiently with adjustable quality. PNG is lossless and best for graphics with sharp edges or transparency, but produces larger files for photos. WebP often achieves smaller sizes than both. Choose the format suited to the image, then compress to taste.
Understanding Image Compression
Lossy versus lossless
Compression comes in two kinds. Lossy compression (as in JPG) discards some detail the eye barely notices to achieve much smaller files, with quality adjustable by a quality setting. Lossless compression (as in PNG) reduces size without discarding any data, but cannot shrink photos as much. Knowing which a format uses explains why a photo is tiny as JPG but huge as PNG.
Balancing size and quality
Every lossy compression is a trade-off: more compression means a smaller file but more visible artefacts, especially around edges and in fine detail. The right level depends on use — heavy compression is fine for a quick web thumbnail, while a hero image or print needs a lighter touch. A good compressor lets you preview the trade and pick the smallest acceptable quality.
Why compression speeds up the web
Images are usually the largest part of a web page, so compressing them is one of the most effective ways to make pages load faster — which improves user experience and search rankings. Smaller images also save bandwidth and storage. Compressing before uploading, rather than relying on the destination to do it, gives you control over the final quality.