VidAI · Thumbnail competitor tester
Privacy
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Thumbnail competitor tester

See how your thumbnail looks next to similar videos — a realistic YouTube-style grid, right in your browser.

Preview only. We do not upload or save your images, topics, or ideas on our servers. Competitor data comes from public YouTube search. Progress can be kept in your browser until you start over.

You’re viewing the public demo (no sign-in required).

Sign in with Google to use the tester

Free for signed-in users. You’ll land on the full tester after signing in.

Example feed preview

Offline demo: mock competitors (not live YouTube). Load your thumbnails below — they stay in this browser only.

Want a real competitor check?

Sign in to use the full tester: live YouTube search for similar videos, smarter opponent picks, and a step-by-step flow — not this offline preview.

Sign in for the full tester

1–5 images · JPG, PNG, or WebP · max 2MB each · not uploaded to our servers

Drop up to 5 images here

or click to browse — JPG, PNG, or WebP · max 2MB each

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Demo mode — mock competitors only. Sign in for live YouTube search and the full wizard.

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Watch on YouTube

Click the image to open the full URL in a new tab (easy to save or download).

· Demo feed

VidAI · Privacy

How this tester works

This preview simulates a YouTube home grid so you can see your thumbnail next to similar videos — not a guarantee of real placement.

  • Your images stay in this browser; we don’t store them on our servers.
  • Competitors come from a public YouTube search for the topic you enter (plus any videos you add by URL).
  • Use ← → (or arrow keys) to switch thumbnail variants while keeping your card in the same place; use Randomize layout to shuffle the grid. Toggle Highlight my thumbnail to see your card with or without emphasis.
  • Start over clears the in-browser session (and optional server session if you use that control).