What is Image Resizer / Compressor?
An image resizer changes the pixel dimensions of a picture, while compression reduces its file size by lowering quality just enough to save space without an obvious loss. This tool does both: you set new width and height, optionally locking the aspect ratio, and choose a quality level for JPEG and WebP output.
Smaller images load faster and take up less storage, which is essential for websites, email attachments and social uploads.
How to Use the Image Resizer / Compressor
- Upload the image you want to resize.
- Enter a new width or height (aspect ratio locks by default).
- Adjust the quality slider to balance size and clarity.
- Click Resize, then Download the optimised image.
Features of Our Image Resizer / Compressor
- Resize to any width and height
- Optional aspect-ratio locking
- Adjustable JPEG and WebP quality
- Shows original and new file sizes
- Instant preview of the result
- Processes images entirely offline
Benefits & Use Cases
Bloggers and shop owners shrink product photos for faster pages, job seekers meet upload size limits, and anyone can prepare images for email without special software. Reducing image weight is one of the biggest wins for website performance.
Because the image never leaves your browser, even private or unpublished photos stay completely secure.
Working with images should not require heavyweight software for simple jobs. The Image Resizer / Compressor handles the task directly in your browser, so there is no installation, no account and no upload. It sits alongside our other image and media tools, letting you resize, convert, crop and process pictures in a single, convenient place while your files stay entirely on your own device.
Best of all, our Image Resizer / Compressor runs entirely inside your web browser. Nothing you enter is uploaded or stored on a server, so your data stays private and results appear instantly. It is completely free, requires no sign-up or installation, and it works beautifully on desktop, tablet and mobile alike. The interface supports both light and dark themes and is built with accessibility in mind, so it is comfortable to use for everyone. Bookmark this page and come back to the Image Resizer / Compressor as often as you need — it will always be here, ready and free to use.
Tips for Getting the Best Results
For the best output from the Image Resizer / Compressor, start with the highest-quality source image you have, since detail that is missing from the original cannot be recovered later. Preview the result before you download it, and if the outcome is not quite right, simply adjust the settings and process the image again — there is no limit on how many times you can try.
It is always wise to keep a copy of your original file, so you can go back and start over if you need a different size, format or crop in future. Because the Image Resizer / Compressor does all of its work inside your browser and never uploads your pictures, you can process personal photos, screenshots and confidential graphics with complete peace of mind about your privacy.
FAQ about Image Resizer / Compressor
Does resizing reduce quality?
Shrinking dimensions keeps quality high. The quality slider only affects JPEG and WebP compression, letting you trade a little clarity for a much smaller file.
Will it keep my image's proportions?
Yes, when Keep aspect ratio is enabled the height and width adjust together so the image is not stretched.
Are my images uploaded?
No. All resizing and compression happen in your browser, so your images never leave your device.
What formats can I download?
PNG images stay as PNG, while other formats are saved as optimised JPEG. For more control, try our Image Format Converter.