Upload two thumbnails and see them side by side at YouTube sizes. Which one would you click? Test before you upload. Free, no signup.
A thumbnail click test lets you compare two thumbnail options side by side to determine which one has stronger visual appeal and click potential. Instead of guessing which thumbnail will perform better, you can see both options displayed at actual YouTube sizes and make an informed decision. This tool shows your thumbnails in home feed format and at the tiny suggested sidebar size where readability matters most. Pick the one you would click, then upload it with confidence.
Upload two thumbnail variations using the upload cards above. The tool displays both at YouTube home feed size for visual impact comparison and at the suggested sidebar size of 168x94 pixels to check readability. Click on the thumbnail you would click as a viewer. Test with friends and colleagues for broader feedback. Focus on testing one variable at a time: try the same image with different text, or the same text with different backgrounds. For a deeper analysis, run both thumbnails through our thumbnail analyzer to compare CTR scores.