What is the recommended YouTube thumbnail size?

YouTube recommends 1280 × 720 pixels, with a minimum width of 640 pixels, 16:9 aspect ratio, under 2MB in size.

What image formats does YouTube accept for thumbnails?

YouTube accepts JPG, GIF, PNG, or BMP formats.

YouTube displays the video duration timestamp in the bottom right corner, which will cover any text or graphics placed there.

No, all thumbnail rendering and analysis occurs locally in your web browser.

Upload your thumbnail image (JPG, PNG, or WebP).

Check resolution, 16:9 aspect ratio, and file size compliance.

Type your video title to preview the complete YouTube video card.

Ensure critical text/graphics aren't hidden behind the bottom-right timestamp badge.

Verifies 1280×720 recommended minimum resolution

Verifies 16:9 aspect ratio and 2MB file size limits

Simulates realistic YouTube video feed card with timestamp badge

Customizable video title preview

100% client-side privacy

Keep faces and key text away from the bottom-right corner where the video duration timestamp appears.
Ensure high contrast and bold text so thumbnails are legible on small mobile screens.

Calculate image and video aspect ratios (16:9, 4:3, 1:1) and proportional dimensions.

Crop images online to 1:1 square, 16:9 widescreen, or 4:3 with instant PNG download.

Resize images by pixel dimensions or percentage with aspect ratio lock.