Instagram Reel Script Analyzer — Will Your Reel Go Viral?
Paste your Reel script and describe your target audience. Our AI scores hook power, retention structure, ICP alignment, shareability, and caption CTA — and tells you exactly what to fix before you film.
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Overall Score
Top improvement
Dimension scores
5 specific improvements
Rewritten version
See your full Reel analysis
Your complete dimension scores, 5 specific improvements, and a rewritten version of your hook and script — free with a Numi account.
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How It Works
Describe your target audience — their role, industry, and the context they're in. Choose what you want this Reel to accomplish. Enter your hook separately (it gets scored more heavily — it's the most important moment in the Reel). Paste your full script with any on-screen text or visual notes. Select your Reel length. Add your caption if you have one. Hit analyze.
Our AI evaluates your Reel script across five dimensions: hook power (does the opening stop the scroll?), retention structure (does the script keep viewers watching until the end?), ICP alignment (does this content speak directly to your described audience?), shareability and save-worthiness (will viewers want to send or save this?), and caption and CTA support (does the caption extend the Reel's impact and direct viewers toward a clear action?). It returns a letter grade, a plain-English summary, and the single highest-leverage improvement — free, in seconds.
Create a free account to unlock the full report: all five dimension scores with notes, five ranked improvement recommendations, and a rewritten version of your hook and script incorporating every suggestion.
What You'll Get
Free analysis includes your overall grade (A through D), a one-sentence summary of the Reel's main strength and weakness, and the single highest-leverage change you can make before filming.
Full report (free account required) includes:
Hook Power score — does your opening 1-2 seconds stop the scroll and make viewers commit to watching?
Retention Structure score — does the script keep viewers watching through to the end?
ICP Alignment score — does this Reel address the actual interests, pain points, and vocabulary of your described audience?
Shareability / Save-Worthiness score — will viewers want to send this to someone or save it for later?
Caption + CTA Support score — does the caption add value and direct viewers toward a clear next step?
Five specific, ranked improvements with exact language suggestions
A fully rewritten version of your hook and script
Why Your First Two Seconds Determine Everything
On Instagram, Reels autoplay as users scroll. You don't earn their attention — you have to interrupt it. The first 1-2 seconds of your Reel is the only window you get before a viewer swipes away. In that window, you need to give them a reason to stop: a surprising visual, a bold claim, a direct address of something they already care about, or a curiosity gap that makes finishing the Reel feel necessary.
The hook formats that consistently stop the scroll:
A direct challenge to a common belief your audience holds ("You don't need more followers to sell — here's what actually works")
A specific, unexpected result that your audience wants ("How I got 47 inbound leads from one Reel — no paid spend")
A direct address of a frustration they feel ("If your Reels keep flopping, this is why")
An immediate visual payoff that makes stopping worth it
This analyzer scores your hook separately from the rest of the script because improving it delivers more impact per unit of effort than anything else in the Reel.
What Makes an Instagram Reel Hold Attention
The Instagram algorithm measures watch-through rate — how many people watch your Reel all the way to the end. A Reel that loses 80% of viewers halfway through is penalized in distribution even if the initial scroll-stop rate is high. The Reels that hold attention share a structural pattern:
Each scene or beat either delivers value or creates a question the next beat answers
The Reel has a clear direction — viewers can feel they're building toward a payoff
Pacing matches the format length — short Reels move fast, longer Reels earn each additional second
The closing beat delivers the promised payoff and directs the energy toward a specific action
Retention Structure is the dimension most creators underestimate. It's not about whether each individual moment is good — it's about whether watching the first half gives you enough reason to watch the second. This analyzer scores that explicitly.
Frequently Asked Questions
Viral Instagram Reels share three structural traits: a hook in the first 1-2 seconds that stops the scroll before someone swipes away, a retention structure that gives viewers a reason to keep watching until the end, and a caption or on-screen CTA that converts views into saves, follows, or clicks. Beyond structure, viral Reels tap into something the audience already cares about — they validate a frustration, teach a shortcut, or deliver a satisfying payoff the viewer didn't see coming. The Instagram algorithm amplifies Reels with high watch-through rates and share/save velocity in the first few hours, which means your opening hook is the single highest-leverage element in the entire script.
Reel length depends on the goal and content type. Under 15 seconds works best for quick tips, product reveals, or high-energy clips optimized for virality — the algorithm tends to boost very short Reels that get high rewatch rates. 15-30 seconds is the sweet spot for educational or storytelling content where you need slightly more time to deliver a complete thought. 30-60 seconds allows for a proper setup, payoff, and CTA, and works well for authority-building content. 60-90 seconds should only be used when the content genuinely earns that time — tutorials or deep dives where every second adds value. The most common mistake is choosing a longer format because the topic feels important, rather than because the content needs the time.
The hook — your first 1-2 seconds of spoken or on-screen text — has one job: stop the scroll. The formats that consistently outperform: a specific, non-obvious claim that challenges a common assumption your audience holds; a direct address to a frustration your audience feels; a curiosity gap that promises a payoff the viewer wants; or a bold visual or sound that breaks the pattern of the surrounding content. Generic hooks like "Here are 5 tips for X" have low stop-scroll power because they've trained audiences to swipe away. This analyzer scores your hook separately because it's the most asymmetric lever in the script.
Yes. The basic analysis — grade, summary, and one improvement hint — is completely free. No credit card, no signup. A free account (email only) is required to see the full breakdown: all five dimension scores, five specific improvements, and a rewritten version of your hook and script.
B2B Reels that perform well on Instagram name a specific pain point or outcome in the first two seconds — something your audience already thinks about. They build from problem to insight to result, keeping each beat tight enough that the viewer can follow without rewinding. On-screen text should reinforce the spoken word, not duplicate it. The caption should do work: add context the Reel couldn't fit, ask a question that prompts saves or replies, and include a clear call to action. B2B Reels don't need to go viral to succeed — a high save rate and targeted profile follows from the right ICP matters more than raw reach. This analyzer scores all five dimensions against your described target audience.
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