Thumbnail Text Tester
Preview thumbnail text at real YouTube render sizes - desktop, sidebar, and tiny mobile - to catch illegible titles before you publish.
Same thumbnail, rendered at the three sizes viewers actually see. If your text vanishes at 120×68, most of your audience can’t read it.
Email me these results + the free faceless starter kit
Get a copy of your numbers plus our niche + RPM cheat sheet.
Turn the plan into finished videos
VidNexus scripts, voices, edits, and renders faceless videos locally - one platform, no per-render fees.
// Frequently asked questions
Q01Why preview thumbnail text at tiny sizes?
Most YouTube impressions happen at small sizes - the sidebar and especially the mobile feed. Text that looks bold in the editor often turns into an unreadable smudge at 120×68 pixels. Testing here catches that before you publish.
Q02How many words should thumbnail text have?
Aim for three to four large words maximum. The preview strip makes the reason obvious: each extra word shrinks the font and pushes you below the legibility line at mobile size.
Q03Why does the text have an outline?
A subtle dark stroke keeps light text readable over busy or bright backgrounds. It is drawn automatically here and is a standard trick on high-CTR thumbnails.
Q04Can I test against my real thumbnail background?
Yes - upload your background image and the text is composited on top exactly as it will render. The download button saves all three sizes as a single strip so you can compare options side by side.