Safe Zone Checker

Social Media Safe Zone Checker

Upload your thumbnail or cover image. See exactly what gets covered by platform UI before you post.

All processing happens in your browser. Your images never leave your device.

Upload an image to see platform overlays

Scroll to zoom, drag to pan

YouTube Thumbnail — Safe Zone Guide

Danger Zones
Video Duration — covers 20% x 13% of the image
Bottom Gradient — covers 100% x 25% of the image
Safe Zone
Place your title and key text within the green dashed area:
5%–95% wide, 10%–75% tall
Tips
*Keep main text in the upper 60%
*Bottom-right is covered by duration badge
*YouTube adds a dark gradient at bottom