Resize Image Online by Pixels or Percentage
Resize a single PNG, JPG, or WebP image to an exact pixel size or a percentage scale. Decoding, resizing, and re-encoding happen in a background worker in your browser. The file never leaves your device.
Good to know: Resizing won't enlarge a photo past its original resolution by default. If your target is bigger, the original size is kept instead of stretching the image.
How it works
- 01
Drop in one image. Resizing is limited to one file at a time, so the aspect-ratio math and quality settings stay unambiguous.
- 02
Set a target: exact width and height (aspect ratio locked or unlocked), or a percentage of the original.
- 03
Check the live estimated file size, then download the result. Nothing is uploaded during the process.
Common uses
- Shrinking a photo to fit a website's upload size limit
- Preparing a profile picture or thumbnail at exact pixel dimensions
- Scaling a screenshot down before sharing it
- Reducing a large photo before attaching it to an email
Choose the right image resize settings
Resizing changes pixel dimensions, while the quality control changes how aggressively a JPG or WebP is encoded. Set the dimensions first, then use the live size estimate to balance detail and file size.
Use exact pixels
Enter a precise width or height for profile photos, thumbnails, forms, and upload fields with a stated pixel requirement.
Keep the aspect ratio
Leave the ratio locked to prevent stretching. Unlock it only when the destination requires an exact shape and distortion is acceptable.
Scale by percentage
Use percentage mode when you want a proportional copy, such as reducing both dimensions to 50% without calculating them yourself.
Frequently asked questions
Does resizing upload my photo anywhere?
No. Resizing runs in a Web Worker inside your browser tab using the Canvas API. The image data never touches a server.
Will this remove my photo's location or camera info?
Yes, as a side effect. Resizing decodes and re-encodes the image, which drops EXIF, GPS, and other metadata. The correct orientation is baked into the pixels first, so the result stays right-side up.
Can I make an image bigger than the original?
Not by default. If your target exceeds the original resolution in either dimension, the tool keeps the original size instead of stretching it.
What formats are supported, and is there a size limit?
PNG, JPG, and WebP. The output format always matches the input. Use a converter tool if you need to change formats. Limits are 25 MB and 40 megapixels per image.
Can I resize a batch of images at once?
No. Resizing is limited to one image at a time by design, so the aspect-ratio math and quality settings stay unambiguous. Batch conversion is available with the format converter tools instead.
Does the quality slider affect PNG output?
No. The quality slider only applies to JPG and WebP. PNG is always encoded losslessly, so there's nothing to adjust.