How do I resize an image without stretching it?

Leave the link button between width and height locked, which is the default. Typing one value then recalculates the other from the original proportions, rounded to whole pixels. Only unlock it when you really want a different shape.

Can I scale an image by a percentage instead of pixels?

Yes. Choose By percentage and the Scale box starts at 50%. The line beside it shows the original and the new size in pixels, and each side is at least 1 px, so very small percentages never produce an empty image.

Does resizing change the file format or the quality?

The output starts on the format you uploaded, and the JPG, PNG and WebP buttons let you change it. JPG and WebP use a fixed quality of 92, PNG stays lossless, and JPG output fills transparent areas with white.

What happens if I ask for a size that is too large?

The Resize Image button is disabled and a message says the maximum is 16384 px on a side and 100 megapixels in total. Lower either value, or use percentage mode with a smaller scale.

Does the resizer send my picture to a server?

Yes, resizing is done on our servers, not in the page. A result made while signed out expires after 24 hours and is then deleted automatically.

Image Resizer

Popular

Resize images by pixels or percentage online.

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About Image Resizer

Forms, marketplaces and content systems often ask for an exact width, while a camera file is far bigger. Add a file in JPG, PNG or WebP format, then set the new size in pixels or as a share of the original. With the lock on, typing one side works out the other from the original proportions, and five preset widths cover the usual cases. Resampling uses the Lanczos method, and the result can be saved as JPG, PNG or WebP.

Features

Exact width and height in pixels, or a scale percentage
Aspect ratio lock that recalculates the other side as you type
Preset widths of 1920, 1280, 1080, 800 and 500 px
Output as JPG, PNG or WebP
Shows the original and target pixel size before you run a percentage resize

Limitations

The resized image can be at most 16384 px on a side and 100 megapixels in total, and uploads can be up to 60 MB.
There is no quality control on this page: JPG and WebP output is saved at a fixed setting of 92, so run the result through the compressor if you need it smaller.
Enlarging works but adds no new detail, and unlocking the ratio and changing both sides will stretch the picture; nothing is cropped or padded.
Downloading the resized file needs a free account; without one you see a reduced-size preview.

How it works

Drop a JPG, PNG or WebP file onto the upload area, or browse for it.
Choose By pixels or By percentage.
In pixel mode, type a width or height, or click a preset width. The other side follows while the link button is locked; click it to unlock and set both freely.
Still in pixel mode, pick JPG, PNG or WebP as the output format. It starts on your upload's format.
In percentage mode, enter the scale and read the original and new size in pixels beside it.
Select Resize Image, compare the result with the original, then press Download.

Frequently asked questions

: Leave the link button between width and height locked, which is the default. Typing one value then recalculates the other from the original proportions, rounded to whole pixels. Only unlock it when you really want a different shape.
: Yes. Choose By percentage and the Scale box starts at 50%. The line beside it shows the original and the new size in pixels, and each side is at least 1 px, so very small percentages never produce an empty image.
: The output starts on the format you uploaded, and the JPG, PNG and WebP buttons let you change it. JPG and WebP use a fixed quality of 92, PNG stays lossless, and JPG output fills transparent areas with white.
: The Resize Image button is disabled and a message says the maximum is 16384 px on a side and 100 megapixels in total. Lower either value, or use percentage mode with a smaller scale.
: Yes, resizing is done on our servers, not in the page. A result made while signed out expires after 24 hours and is then deleted automatically.