Reduce image file size online
Image Compressor
Compress JPG, PNG, and WebP images in your browser when a file is larger than you need. Adjust the quality, compare the original and compressed file sizes, and download the result without changing the page.
Upload an imageJPG, PNG, or WebP
How to Compress an Image
- Upload a supported JPG, PNG, or WebP image.
- Use the quality control to choose the balance you want between file size and appearance.
- Run the compression and compare the original size with the new file size.
- Download the compressed image when you are happy with the result.
What an Image Compressor Actually Changes
An image compressor tries to reduce the amount of data needed to store an image. That matters when a website, form, email service, or messaging app has a file-size limit, and it can also make image-heavy pages easier to deliver. Compression does not automatically mean changing the width and height. Your image can keep the same dimensions while the file itself becomes smaller.
There is usually a trade-off with lossy formats: stronger compression can create a smaller file, but pushing it too far may soften details or introduce visible artifacts. For most everyday uses, the practical goal is not the smallest file at any cost. It is a file that is small enough for the job while still looking good at the size people will actually see it.
Why Reduce Image Size?
Large images can slow uploads, fill storage faster, and exceed limits on forms or email attachments. Website owners also often compress photos before publishing so visitors do not have to download more image data than necessary. A smaller file can be especially helpful when several images appear on the same page.
Compression is also useful for product photos, portfolio images, documents with image attachments, school or job applications, and social graphics. If the width and height are already correct, compression lets you focus on file size instead of rebuilding the image.
Supported Image Types
The current compressor is designed around common JPG/JPEG, PNG, and WebP images. JPG is widely used for photographs. PNG is often chosen for graphics and images that need transparency. WebP is a modern format commonly used on websites. The controls shown in the tool are the source of truth for the formats supported by the current version.
Image Compression vs. Image Resizing
Compression and resizing solve different problems. Compression focuses on how much storage space the file uses. Resizing changes the image dimensions measured in pixels. If an application asks for an image that is 600 pixels wide, compression alone will not meet that requirement. Use the Image Resizer to change dimensions, then compress the result if the file is still too large.
When an Image Compressor Is the Right Tool
Use compression when the image already has suitable dimensions but the file is heavier than necessary. Common examples include a photo that will not fit an upload limit, a website image that takes too long to load, a product image you want to make easier to handle, or an email attachment that is larger than the recipient needs.
If you are preparing a graphic for a specific platform, you may want to start with the Social Media Image Resizer. If a site rejects the file because of its format rather than size, use the Image Format Converter.
Useful Compressor Features
- Simple upload and preview: choose an image and see what you are working with before processing.
- Quality control: adjust the compression setting instead of accepting one fixed output.
- File-size comparison: check the original and compressed sizes so you know whether the change was worthwhile.
- Downloadable output: save the processed image directly after compression.
- Responsive layout: the controls are designed to remain usable on mobile and desktop screens.
Frequently Asked Questions
Does compressing an image reduce quality?
It can. Lossy compression reduces file size by discarding some image information, so very aggressive settings may make fine details look softer. Use a moderate setting and compare the result visually.
How can I reduce an image file size?
Upload the image, choose a practical quality level, compress it, and compare the new size with the original. If the file is still too large, consider whether the image dimensions are larger than you actually need.
Can I compress JPG images?
Yes. JPG/JPEG is one of the common formats supported by the compressor.
Can I compress PNG images?
Yes, supported PNG images can be processed. Keep in mind that transparency and image content can affect the final file size.
Can I compress an image on my phone?
Yes. The tool is responsive and works in modern mobile browsers, although very large images can require more memory and processing power.
Is compression the same as resizing?
No. Compression focuses on reducing file size. Resizing changes width and height. Use the Image Resizer when dimensions are the part you need to change.
Will compression change my image dimensions?
The compressor is intended to reduce file size rather than use new dimensions as its main control. If you need a specific width or height, resize the image separately.
Compress Only as Much as You Need
A useful compressed image is one that meets your file-size requirement without unnecessary visual loss. Keep the original image somewhere safe, test the processed result at the size it will be viewed, and use resizing as a separate step when dimensions also need attention.
Looking for another image solution? Visit The Image Tool homepage to explore our free online image tools and choose the one that best fits your needs.