FreeWrench
Image Resizer
Enter just the width and the height follows automatically, so nothing gets squashed. You can resize a whole folder with the same settings.
Loading tool…
How to use it
- Choose pixels or percent.
- Enter a width, and a height only if you want a specific shape.
- Add your images and download the results.
Good to know
Making an image smaller works well, but enlarging can only blur what is there. Past 150% or so, the loss of sharpness will be visible.
If you enter both width and height with a different shape from the original, the picture will be stretched. Crop it first to avoid that.
Resize, crop and compress are different jobs
| Tool | What it changes | Use it when |
|---|---|---|
| Resize | Pixel dimensions, whole picture kept | A site asks for a specific width |
| Crop | Removes the edges of the picture | The shape is wrong |
| Compress | File size in KB | A form has a size limit |
Common sizes worth knowing
Platforms change their recommendations from time to time, but these have been stable and widely used.
| Use | Pixels |
|---|---|
| Instagram portrait post | 1080 × 1350 |
| Instagram Story or Reel | 1080 × 1920 |
| YouTube thumbnail | 1280 × 720 |
| Link preview image for social media | 1200 × 630 |
| Full-width website image | 1200 to 1600 wide |
How your settings behave
- Width only: the height is calculated, so nothing gets distorted.
- Height only: the width is calculated in the same way.
- Both values: the picture is forced into that shape, so crop first if the proportions differ.
- Percent: from 1 to 400% of the original.
- PNG and WebP keep their format, and everything else is saved as a JPG at 92% quality. The new dimensions are added to each file name.
Questions
Which width should I use for a website?
1200 to 1600 pixels covers most full-width images, and 800 is plenty for pictures inside articles.
Does the format change?
PNG and WebP stay as they are. Everything else is saved as JPG.