Free image tool
Resize an image to the space it needs.
Set exact pixel dimensions for a website, product update, or presentation. Keep the image proportions or choose a new width and height, then export a ready-to-use file.
PNG, JPEG, or WebP input · 20 MB maximum · PNG, JPEG, or WebP output up to 16 MPThe local editor is loading. JavaScript is needed to process files in your browser.
How to use Image Resizer.
Open an image
Choose a PNG, JPEG, or WebP file. The browser reads it locally; the selected image is not uploaded.
Set dimensions
Enter the target width in pixels. Keep aspect ratio on to calculate height automatically, or turn it off for independent dimensions.
Choose a format and download
Export PNG for lossless graphics and transparency, JPEG for photos, or WebP for a smaller web-friendly file. Preview the actual output before downloading.
Use the destination as the starting point.
A website card, social preview, and slide deck need different dimensions. Decide where the image will appear, then resize for that space. Enlarging a small source makes a bigger file but cannot restore missing detail.
Mind the aspect ratio.
Keeping the source ratio prevents stretching. If the destination needs a different shape, crop the image first or allow extra space in the layout instead of distorting the subject.
Frequently Asked Questions
Practical questions about image resizer.
Can I resize an image to exact pixels?
Yes. Enter a width and, if you turn off Keep aspect ratio, a separate height. Output is limited to 4096 pixels per side and 16 megapixels.
Will resizing improve a blurry image?
No. Enlarging an image adds pixels but does not recover detail that was missing from the source.
Does the resizer upload my image?
No. Your file is decoded and exported in the browser. It is not sent to a conversion server.