About Image Resizer
Enter a width and height in pixels or pick a preset. "Fit" keeps the whole image and its proportions inside the size you give. "Fill" covers the exact size and trims the edges from the centre.
The output keeps the original format. Resizing uses Lanczos resampling, which keeps edges sharp when scaling down.
Fit or Fill: what happens to a 4000 × 3000 photo
| Target | Fit result | Fill result |
|---|---|---|
| 1080 × 1080 | 1080 × 810, nothing cut off | 1080 × 1080, left and right edges trimmed |
| 1920 × 1080 | 1440 × 1080, nothing cut off | 1920 × 1080, top and bottom trimmed |
| 800 × 800 | 800 × 600, proportions kept | 800 × 800, edges trimmed |
Commonly used sizes
Platforms change their recommendations from time to time, so check the current guidance of the site you are uploading to.
- Square social post: 1080 × 1080 px
- Portrait social post: 1080 × 1350 px
- Story or vertical video cover: 1080 × 1920 px
- Video thumbnail: 1280 × 720 px
- Full HD screen or presentation: 1920 × 1080 px
Pixels versus file size
Resizing changes the number of pixels. If a form asks for a file size in KB or MB instead, resize to a sensible width first and then use the image compressor to bring the file size down.
How to use it
- 1Choose or drop an image
- 2Enter the size or pick a preset, then choose Fit or Fill
- 3Resize, then download
Questions
What is the difference between Fit and Fill?
Fit scales the image to fit inside the box without cropping. Fill makes the image exactly the size you entered and crops what does not fit, centred.
Can I make an image larger?
Yes, up to 10,000 px on each side, but enlarging cannot add detail that is not in the original.
Which formats are supported?
JPG, PNG and WebP. The result keeps the original format.