Free Virality Predictor
Before you post, find out how the first three seconds land. Upload a thumbnail or a short clip and get a 0 to 100 virality score, a one-line verdict and a fix for each weak spot: the hook, the pacing, the thumbnail, the caption. Blunt by design.
Results
Three uploads, three verdicts
The left side is the thumbnail as uploaded; the right side is the score card it got: a number, a verdict, and the fixes.
UploadScore cardUploadScore cardUploadScore cardSpecs
Virality predictor specs: what goes in, what comes out
- Input
A thumbnail image, or a short clip up to 60 seconds, plus the caption if you have one
- Output
A 0 to 100 score, a one-line verdict, and a fix for each of: hook, pacing, thumbnail, caption
- Judged on
What is readable in the first three seconds, contrast and faces in the thumbnail, cuts per ten seconds, the caption's first five words
- Not judged on
Your follower count or the algorithm's mood; it scores the asset, not your account
How to predict virality in 3 steps
A thumbnail is enough to start. Add the clip and the caption for the full card.
Step 1
Upload the thumbnail or the clip
The cover frame you plan to use, or the clip itself. Paste the caption too if you have written it.
Step 2
Read the score card
One number, one verdict, one fix per weak spot. A 47 with "nothing happens for four seconds" is more useful than a vague 7 out of 10.
Step 3
Fix and re-score
Recut the first three seconds, swap the thumbnail or rewrite the caption, and run it again until the number moves.
A number you can argue with
The score is built from things you can change: what is readable in the first three seconds, whether the thumbnail has a face or a strong contrast, how often the clip cuts, and whether the caption's first five words say anything.
- 0 to 100, not stars
- Same inputs, same score
- Scores the asset, not your account
One line, no padding
Each card leads with a blunt sentence: "the hook is the 8th second", "the thumbnail is a grey rectangle", "the dog does all the work". You can switch between a kind and a roast tone.
- Kind or roast
- Specific to your upload
- Shareable card
One fix per weak spot
Hook, pacing, thumbnail, caption: each gets a concrete change ("start on the pour, cut the walk-in"), not a list of best practices.
- Hook: what to put first
- Pacing: where to cut
- Thumbnail and caption rewrites
Fix it in the same workbench
Need a stronger thumbnail or a new opening shot? The AI Thumbnail Maker and the video generator are one tab away.
- New thumbnail in minutes
- Regenerate the first three seconds
- Re-score the new cut
FAQ
Virality predictor FAQ
Is the virality predictor free?+
Signing up is free and comes with free credits to try it. Each run shows its price before anything is charged.
How accurate is a virality score?+
It is a prediction about the asset, not a promise about reach. It measures the things that correlate with watch time (the first three seconds, the thumbnail, the cut rate, the caption) and tells you which one is weakest. Posting time, your audience and the platform still decide the rest.
What does the score look at?+
What is readable in the first three seconds, whether the thumbnail has a face or strong contrast, how many cuts there are per ten seconds, and whether the caption's first five words make a promise.
Can I score a TikTok, a Reel or a Short?+
Yes. Upload the clip or its cover frame; the checks are the same for vertical short-form on every platform.
Can I score a YouTube thumbnail on its own?+
Yes. A thumbnail alone returns the thumbnail and caption parts of the card; add the clip for the hook and pacing parts.
What is the roast mode?+
The same score with a harsher verdict, written to be screenshotted. Switch it off for the polite version.
Does it see my analytics?+
No. It never connects to your accounts; it only reads the file and the caption you upload.
Can I re-score after editing?+
Yes, as often as you like. Change one thing at a time so you can see what moved the number.
More creator tools
Know the number before you post.
Upload a thumbnail or a clip, read the verdict, fix the weak spot, score it again.
Free to try · Price shown before you generate · Kind or roast