The first 3 seconds decide everything. Here's exactly how to write a hook that stops the scroll and earns you the algorithm.
71%
of viewers decide in the first 3 seconds
85%
of social video is watched without sound
7×
more impressions at 65%+ retention
The algorithm watches first
The platform decides in your first 500 views whether to push your content to thousands — or bury it forever. Your hook is what determines which happens.
Know your numbers
These are the minimum engagement thresholds you must hit on your first 500 views for the algorithm to amplify your content.
10%
Like rate
50+ likes per 500 views
1%
Share rate
5+ shares per 500 views
60%+
Hook retention
300+ keep watching past second 3
What this means: Of your first 500 viewers, you need at least 50 likes, 5 shares, and 300 people watching past your hook. Miss any one and the algorithm won't push further.
The hook breakdown
A hook isn't just an opening line — it's a 3-part sequence that works together to earn the watch.
Seconds 0 – 3
Your opening frame must visually or audibly break the scroll. Bold text on screen, a surprising visual, or a statement the viewer didn't see coming.
Seconds 3 – 7
Bridge the hook to the content. Tell them why they should stay. Open a curiosity gap — hint at what they'll get without giving it all away.
Seconds 7 – 10
Transition into your first real piece of value. If they're still watching at 10 seconds, they'll usually watch 50–70% of the video. You've won.
Retention is ranking fuel. Every second someone watches past your hook, the algorithm learns your content is worth distributing. The 60% retention target means 60% of viewers make it to at least second 3.
Platform hook windows
2s
TikTok
Fastest scroll on the internet
3s
Instagram Reels
Two-step decision
3–5s
YouTube Shorts
Slightly more patience
Hook retention → algorithm multiplier
The playbook
Copy these. Fill in the brackets. Post. These are the patterns behind millions of viral videos.
Exploits the brain's need to close incomplete loops.
An audacious promise that triggers both skepticism and hope.
Triggers an emotional response — comments and shares explode when people disagree.
Calls out a specific person — makes the viewer feel seen.
Sets a clear expectation — viewers stay to collect the complete list.
Humans are wired for narrative — we stay to find out what happened next.
Open loops in the brain demand closure — a question keeps them watching for the answer.
Protect your retention
Writing a great hook is step one. These rules keep people watching long enough for it to matter.
"Hey guys, welcome back to my channel" kills retention instantly. Your hook is your intro. Start with your most interesting sentence.
Your opening frame should reinforce the words. If you say "this changed everything," show the result on screen — not your face setting up a camera.
Every extra word in a hook is a reason to scroll. Aim for 10 words or fewer in your opening statement. Tighter is stronger.
85% of social video is watched without sound. Put your hook in bold text on screen. Watch your own hook on mute — if it doesn't communicate value silently, fix the visual first.
If your hook teases "the secret to going viral," give a real tip by second 30. Broken promises mean instant drop-off and a battered trust score with the algorithm.
At 30–40% into your video, drop a secondary hook: "And the most important thing? I'll share that at the end." It re-engages people who are about to scroll.
Write 3 versions of every hook before you record. Pick the one that makes you slightly nervous to say — that's usually the strongest one.
Before you post
Run every video through this before you hit publish.
Pre-post audit
0/8
checked
SocialGPT analyzes 1 billion+ posts to generate data-backed hooks for your exact niche. No guesswork — just content that performs.