Runs in your browser · nothing is uploaded
Check Your Thumbnail Before You Publish
Preview your thumbnail at different sizes, inspect its dimensions, and see whether your message stays readable.
Fit & Crop Preview
This image isn’t 16:9. Choose how previews frame it. The crop is a local simulation; your uploaded file isn’t cropped or changed.
Preview Sizes
Simulated display widths. Real placements vary by device, layout and zoom.
Placement Previews
Approximate layouts with fictional sample data. Not an exact copy of any platform’s interface.
Social Media Safe-Zone Checker
Overlay profile, caption, and interface-safe areas on your image. Zones are approximate starting points. Apps move them by device, app version and caption length, so adjust them to match what you see.
Show
This format has no interface drawn over the image, so only crop and safe areas are shown.
Image framing
Adjust zones
Measurements
Export & Reset
The preview sheet is a PNG built from your image at labeled sizes, using the current fit or crop and visual checks.
Your preview sheet
Your browser blocked the automatic download. Right-click the image (or press and hold on a phone) and choose Save Image.