Image / Banner Size Checker
Simulate how your image or banner will be displayed and find the best fit.
Uploaded images can also be downloaded at the size you specify.
Quick start: Choose an image source → select a preset or enter dimensions → check the display mode. Upload an image to save a PNG at the specified size.
This tool has been used … times.
How to use
1. Image source: Choose a dummy image or upload your own. After uploading, the preview switches to your image.
2. Presets: Enter common social media / ad sizes with one click.
3. Size settings: Enter the width and height of the banner you want to check. Set either to “0” to auto-calculate from the image’s aspect ratio.
4. Display mode: Switch between “cover (fills the frame)”, “contain (shows the whole image)”, and more to check the cropping.
5. Download: Once you upload an image and set a size, the “Download” button becomes active. Save a PNG at the specified size with the chosen display mode applied.
Frequently Asked Questions
What size is the OGP preset?
The OGP preset is 1200 × 630 px. Enter a custom width and height if the destination specifies a different size.
What is the difference between cover and contain?
Cover fills the entire frame, so part of the image may be cropped. Contain shows the whole image, which can leave empty space in the frame.
What happens when I set the width or height to 0?
After you upload an image, setting only one dimension to 0 calculates it from the image’s aspect ratio. If both are 0, the preview size is unspecified.