ThumbnailTest

by RVDH Interim Management B.V. · Tools

Manifest V3 Free

View in Chrome Web Store Data as of 17 Oct 2026

Vergelijk twee thumbnails in een nagebootste YouTube-interface: zoekresultaten, aanbevolen en mobiel. Alles lokaal in je browser.

Users

+1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#309K

#249K among extensions

Version

0.1.0

updated 2 Jul 2026

Users

monthly, 4 months

Latest, 17 Oct 2026: 3 usersMove the mouse over the chart for any month

Ratings count

monthly, 4 months

Latest, 17 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About ThumbnailTest

ThumbnailTest lets you compare two YouTube thumbnails in a realistic YouTube interface — search results, recommended videos, and mobile view. Upload Version A and Version B, enter a video title, and instantly see which thumbnail stands out in a real context. Everything runs locally in your browser. No uploads, no account, no backend required. Perfect for YouTubers who want to know which thumbnail performs better before publishing. Features: - Upload two thumbnails and compare them alongside real YouTube-style content - Three view modes: search results, recommended, and mobile - A/B labels visible in the preview - 100% local, no data is sent anywhere