Guides
Short, practical articles about thumbnails and working with YouTube images.
YouTube Thumbnail Size and Specs: The Complete Reference
The exact YouTube thumbnail dimensions, aspect ratio, file size limit and formats, plus how each stored size is used.
Are YouTube Thumbnails Free to Use? A Plain-English Guide
What copyright means for YouTube thumbnails, when saving one is fine, and when you need permission. A practical guide, not legal advice.
How to Save a YouTube Thumbnail on Android and iPhone
Step-by-step instructions to copy a video link and save its thumbnail to your phone gallery on Android and iPhone.
How to Design a YouTube Thumbnail That Gets Clicks
Seven practical design principles for YouTube thumbnails: contrast, faces, text, composition, and how to test them.
YouTube Shorts Thumbnail Size and How Covers Work
What size a YouTube Shorts thumbnail should be, how covers are chosen, and how to set a custom one.
YouTube Banner Size and Safe Area for All Devices
The right YouTube channel banner size, the safe area that stays visible on phones, tablets and TVs, and a quick checklist.
How to Get a Vimeo Thumbnail Image
Three ways to get the preview image of a Vimeo video: a downloader, the Vimeo oEmbed data and the video settings.
YouTube Thumbnail A/B Testing: How to Run Fair Tests
How to test two thumbnails for the same video, what to measure, and how to avoid drawing wrong conclusions.
10 Common YouTube Thumbnail Mistakes and How to Fix Them
The most frequent thumbnail mistakes that hurt clicks, from tiny text to misleading images, with simple fixes.
Why Is the HD Thumbnail Not Available for Some YouTube Videos?
Reasons a YouTube video has no 1280×720 thumbnail, how to check, and what to do instead.