LinkedIn Hook Tester & Score
The first 140-210 characters of your LinkedIn post determine whether anyone reads it. The Hook Doctor inside PostFormatter analyzes your opening line and gives it a score out of 100: flagging issues like excessive caps, walls of text, boring openings, and first sentences that are too long. Fix your hook before you post and watch your engagement improve.
How to use the LinkedIn Hook Tester & Score
Write or paste your post opening
Type your LinkedIn post in the editor. The Hook Doctor automatically analyzes the first 100 characters as you type.
Read the score and warnings
The Hook Doctor panel shows your hook score out of 100 and specific warnings: such as too many caps, no line breaks, or a first sentence that is too long.
Fix the issues flagged
Follow the suggestions: break up long sentences, add an emoji for visual attention, or rewrite a boring opening line.
Aim for 80+ before posting
A score above 80 means your hook is strong. Combine this with the See More preview to make sure your hook is fully visible before the fold.
Why use PostFormatter for linkedin hook tester & score
Instant hook score out of 100
Know immediately whether your opening line is strong enough to stop the scroll in the LinkedIn feed.
Specific, actionable warnings
Instead of vague advice, get specific flags: "Too much caps", "Wall of text", "First sentence too long": with tips to fix each.
Bonus points for formatting
The Hook Doctor gives extra points for bold Unicode text and emojis in your hook: because they visually interrupt the feed and earn more clicks.
Combines with See More preview
Use the hook score alongside the See More preview to make sure your highest-scoring opening line is visible before LinkedIn truncates the post.
Frequently Asked Questions
What makes a good LinkedIn hook?
A strong LinkedIn hook is short, specific, and creates curiosity or tension. It should be 1-2 short lines that make the reader want to know more. Avoid starting with "I am excited to announce" or long sentences. Use bold text, numbers, or a surprising statement. The best hooks score 80+ in the Hook Doctor.
How does the LinkedIn Hook Doctor scoring work?
The Hook Doctor starts with a baseline score of 70 and adjusts based on: excessive caps (-15 points), wall of text with no line breaks (-10), boring hook with no emoji or formatting (-5), first sentence that is too long (-5). Bonus points are added for having emoji (+5), Unicode bold text (+10), and good line spacing (+5). Maximum score is 100.
How long should a LinkedIn hook be?
The ideal LinkedIn hook is 1-2 short lines: roughly 100-140 characters. This fits comfortably within the mobile "See More" cutoff so the entire hook is visible without clicking. Long opening sentences get cut off mid-thought, killing curiosity.
Should I use emoji in my LinkedIn hook?
Yes, strategically. One emoji at the start or end of your hook acts as a pattern interrupt in the feed: it breaks the monotony of plain text and draws the eye. The Hook Doctor awards bonus points for emoji in the hook. Avoid overusing emoji as it can look unprofessional.
The Hook Doctor is one of several exclusive features in PostFormatter. Combine it with the See More preview, Magic Clean for AI-paste cleanup, and 17+ font styles to create LinkedIn posts that stop the scroll. Try the full tool at postformatter.io.
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