Compress image online.

Large photographs can slow down a website or make sharing difficult. Image compression reduces the amount of data in an image, usually by trading a little visual detail for a smaller file. The best setting depends on whether you are preparing a photograph, a screenshot or a graphic containing text. No sign-up required.

How to use Image Compressor

Select the JPG, PNG or WebP image you want to optimize.
Adjust the available quality setting, then process the image.
Download the result and compare its file size and visual quality with the original.

Practical example

For a product photograph that is 2400 pixels wide, first resize it to the actual display width if appropriate. Then compress the resized copy. This avoids storing more pixels than the page needs.

Important limitations

Compression cannot restore detail already lost in a low-quality source. Very aggressive compression may introduce blurry edges, color banding or artifacts around text. Keep the original file.

Frequently asked questions

Does compressing an image always make it smaller?

No. An image that is already heavily optimized may not become much smaller, and converting formats can sometimes increase its size.

Which format is best for a website?

JPEG and WebP often work well for photographs. PNG is useful for certain graphics and transparency. Choose based on visual quality and browser compatibility.

What quality setting should I choose?

Start with a moderate setting and inspect text, textures and edges at the intended display size.

Should I resize before compressing?

If the source dimensions are much larger than needed, resize a copy first to avoid transferring unnecessary pixels.

Related tools and guides

Explore the related tools alongside this page or read more in our practical guides.