The standard YouTube video size is 1920 × 1080 pixels with a 16:9 aspect ratio. This format is optimized for playback across desktop, mobile, and TV and helps preserve quality after YouTube’s compression.

YouTube thumbnails should be 1280 × 720 pixels using a 16:9 aspect ratio. Designing thumbnails at this size helps ensure they appear sharp and readable across all screen sizes.

YouTube crops images when they don’t match recommended aspect ratios or when key elements fall outside safe areas. Keeping text and important visuals centered helps prevent cropping on different devices.

YouTube automatically resizes and compresses videos that don’t follow supported dimensions, which can reduce clarity. Preparing videos at recommended sizes before upload helps maintain quality and framing.

Resize videos to supported dimensions such as 1920 × 1080 pixels for standard videos or 1080 × 1920 pixels for Shorts before uploading. Designing at the correct size avoids distortion and unnecessary compression.

Resize images to 1280 × 720 pixels before uploading. This ensures thumbnails display correctly without stretching or loss of sharpness.

YouTube primarily uses a 16:9 aspect ratio for standard videos, but also supports 9:16 for Shorts and 1:1 for square videos. Using the correct aspect ratio helps content display as intended.
 

YouTube supports both vertical and square videos. Vertical videos are used for YouTube Shorts, while square videos are supported in the feed for standard playback.
 

A resolution of 1920 × 1080 pixels or higher is recommended. Higher-resolution uploads give YouTube more data during compression, which can result in better playback quality.
 

Export videos at their original resolution and highest available bitrate. Avoid re-encoding files multiple times, as repeated compression can degrade quality.