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Free File Converter

Resize an image

Change an image's pixel dimensions, keeping its proportions if you want.

Processed in your browser. This file is converted on your device and is never uploaded.

Converter

.png, .jpg, .jpeg, .webp up to 50 MB. You can also drag a file here.

Options
Leave both empty to keep the original size.
When off, the image is stretched to exactly the width and height you give.
Lower quality means a smaller file and visible artefacts. This has no effect on PNG, which is lossless.

No file selected.

About this tool

A photo straight from a phone is often 4000 pixels wide, which is far more than a website, a document, or an email needs. Resizing it before use cuts the file size dramatically and makes pages load faster.

Set a width, a height, or both, and choose whether the proportions should be kept. The output format is yours to pick, so you can resize and convert in one pass.

Supported formats and limits

Input
.png, .jpg, .jpeg, .webp
Output
.png (image/png)
Output name
The original name with -resized and the chosen format's extension, for example photo.jpg becomes photo-resized.png.
File size limit
50 MB
Processing
In your browser. The file is not uploaded.

How to use it

  1. Choose a .png, .jpg, or .webp file.
  2. Enter a width, a height, or both. Leaving one empty derives it from the other.
  3. Pick an output format, then select Convert and download the result.

Limitations

  • Enlarging an image cannot add detail that is not there. Scaling up produces a softer picture, not a sharper one.
  • With proportions kept and both dimensions given, the image is fitted inside that box rather than stretched, so one dimension may come out smaller than requested.
  • With proportions turned off, the image is stretched to exactly the size given, which distorts it.
  • Metadata is not preserved. EXIF and colour profiles are dropped.
  • The largest dimension this tool will produce is 16384 pixels, and most devices run out of memory well before that.

Frequently asked questions

Is my image uploaded?
No. The resize runs entirely in your browser using standard canvas APIs. The image never leaves your device.
Why is the result smaller than the height I asked for?
Because proportions are being kept and both dimensions were given, so the image was fitted inside the box you described. Turn off proportions to get exactly the dimensions you typed, at the cost of distorting the picture.
What resampling is used?
The browser's own canvas scaling, which is a smooth filter suitable for photographs. It is not the right choice for pixel art, which needs nearest-neighbour scaling to stay crisp.
Can I resize several images at once?
Not yet. Convert them one at a time.

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