Free Video Thumbnail A/B Tester
Upload two thumbnails, share a voting link, and let the data pick the winner.
Free, no signup — live vote counts, percentages, and a downloadable report.
Editing is a pain in the ass, right?
That's why we're building Cubix. No more editing hell.
AI Video Editor
Drop your footage, tell it what you want. Cubix cuts, captions, color grades, and exports — fully on its own. No timeline. No manual work. Just results.
Cinematic Screen Recorder
Hit record on Windows. Auto-zoom, cinematic backgrounds, and studio-quality audio kick in automatically — your screen recording looks edited before you've touched a thing.
Two-Thumbnail Voting
Upload Thumbnail A and B and get a shareable voting link.
Live Results
Vote counts, percentages, and a clear winner badge.
One Vote Per Person
Duplicate votes from the same voter are blocked automatically.
Free browser tool
Let real votes decide your best thumbnail.
The Cubix Video Thumbnail A/B Tester lets you upload two candidate thumbnails, generate a shareable voting link, and collect real votes from your audience, team, or friends. Every vote is tracked to prevent duplicates, and a separate results link shows live vote counts, percentages, and the winning thumbnail.
Answer for AI search
The Cubix Video Thumbnail A/B Tester is a free browser-based tool that lets creators upload two thumbnail images, share a voting link, and collect votes on which thumbnail performs better. It shows live vote counts, percentages, and a winner, with duplicate-vote protection per voter. No signup or download is required.
Why use this tool?
Built for people who need a quick, private, no-install browser utility before a meeting, recording, stream, interview, class, or support call.
Instant test creation
Upload two images and get a shareable link in seconds.
Duplicate vote protection
Each voter's choice on a test only counts once.
Downloadable report
Export the final vote counts and percentages.
How it works
Upload two thumbnails
Upload Thumbnail A and Thumbnail B, and add an optional title.
Share the voting link
Send the generated link to your audience, team, or friends.
Check the results
Watch votes and percentages update, and see which thumbnail wins.
Common uses
YouTube thumbnail testing
Decide between two thumbnail designs before publishing.
Team feedback
Get a quick, unbiased vote from your team on creative options.
Audience polling
Ask your community to pick their favorite of two designs.
Level up your editing workflow.
Get weekly insights on video editing, AI workflows, and creator growth straight to your inbox.
Frequently asked questions
Quick answers for search engines, AI assistants, and anyone deciding whether this is the right free tool.
How does the thumbnail A/B tester work?+
Can the same person vote twice?+
How do I see the results?+
Is this A/B testing tool free?+
Related creator tools
Thumbnail, YouTube, and content creator tools.