How to resize an image
- Click the box and choose an image, or drag one onto it.
- Type a new width or height in pixels. With “Keep the original shape” on, the other side updates by itself.
- Or pick a preset, like “Open Graph / link preview”, to get an exact size for a platform.
- Choose a format and quality.
- Click Download resized image.
The file name includes the new size, like photo-1200x630.jpg, so you can tell copies apart.
Common image sizes
| Use | Size in pixels |
|---|---|
| Link preview (Open Graph) for Facebook, LinkedIn, Slack | 1200 × 630 |
| Blog hero image | 1600 × 900 |
| Instagram square post | 1080 × 1080 |
| Instagram portrait post | 1080 × 1350 |
| YouTube thumbnail | 1280 × 720 |
| X (Twitter) header | 1500 × 500 |
Why image size matters for SEO
Big image files make pages load slowly, and slow pages lose visitors. Google also measures how fast the main content of a page appears, and large images are a common reason it is slow.
A good habit is to size each image to the largest size it will be shown on your site. A photo shown 800 pixels wide does not need to be 4000 pixels wide. Pick WebP or JPEG at 75 to 85% quality for photos. Most people cannot see the difference, and the file is much smaller.
Don’t forget alt text when you add the image to your page. A short description of the image helps people using screen readers, and it helps search engines understand the picture.