Image Resize
Image Resize changes the width and height of a photo in your browser, free and without uploading it anywhere. You can type exact dimensions in pixels, or scale the photo by a percentage, and then download the resized image straight away.
Last updated: 30 October 2026 · Free · No signup
Resizing is one of the most common photo jobs, and it is also one of the easiest to get wrong. A photo that is too large will not fit a profile picture box, a form upload, or a social media frame, and a photo that is too small will look blurry when it is enlarged. This tool solves that by letting you set the size first and see the result before you download anything. Because the work happens in your browser, the original photo is never sent to a server, which matters when the photo is personal.
Keep the aspect ratio locked unless you actually want to stretch a photo. Stretching makes faces and text look wrong, while scaling by percentage keeps the shape intact. If you are resizing for a website, check the size the site asks for first — a common mistake is to guess, download, and then find the upload still rejects the file.
Privacy: this tool runs entirely in your browser — no upload, no signup, and your files never leave your device.
Change the size of a photo — type your own width/height or scale it by percentage. For YouTube thumbnails, profile photos, anything.
How to use Image Resize
- Choose or drop a photo into the tool.
- Type the new width and height, or choose a percentage scale.
- Keep the ratio locked if you do not want the photo stretched.
- Preview the result, then download the resized image.
Key facts
| Output | A resized image, downloaded in PNG or JPEG format |
|---|---|
| Size control | Exact pixels, or a percentage of the original size |
| Upload | None — the photo stays in your browser |
Frequently asked questions
How do I resize an image without losing quality?
Shrink a large photo rather than enlarging a small one. Enlarging adds no new detail, so a small photo will soften as it grows. If you must enlarge, keep the increase modest and check the preview at full size before downloading.
What size should I resize an image to for a profile photo?
Use the size the platform asks for, and check its help page before you resize. A square crop at that exact pixel size will look sharper than a photo that the platform has to crop or stretch for you.
Does resizing an image reduce its file size?
Usually, yes. A smaller image has fewer pixels to store, so the downloaded file is normally smaller than the original. The exact saving depends on the format and on how much detail the photo contains.
Will my photo be uploaded to a server?
No. The resize happens in your browser, and the photo never leaves your device. Closing the page clears the work, and nothing is saved by ToolNest.