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LinkedIn AI Checker

Paste your post. The checker marks the phrases and patterns readers take for AI writing and tells you how to fix each one.

100% free, no signup

Checked and thrown away. Nothing is saved. 0 / 3,000

Your results

Paste a post and press Check to see which lines read as AI.

People on LinkedIn have learned to spot AI writing. A post that opens with "In today's fast-paced world", pivots on "It's not about X. It's about Y.", runs on em dashes and ends with "Thoughts?" gets read as generated, even when every idea in it is yours.

This checker does not guess who wrote your post. Detectors that print a percentage are unreliable, and you can't act on a number anyway. It runs a fixed set of rules and points at each line that matches: era openers, throat-clearing, the "not X, it's Y" reframe, inflated verbs like delve and leverage, recap endings, unsourced claims, generic calls to action, markdown that LinkedIn shows as raw asterisks, and sentences that all run the same length.

Each finding is either certain, a pattern that reads as AI in almost any post, or a signal: worth a second look, and fine if you meant it. The same post always gets the same result, so you can fix a line and check again.

Frequently asked questions

Is this an AI detector?

No, on purpose. AI detectors give you a probability you can't verify and can't act on. This checker points at specific phrases and patterns and says what to change, so you decide what stays.

Can a post I wrote myself get flagged?

Yes. People use these patterns too, which is where the models picked them up. A finding means readers may take the line for AI writing, not that AI wrote it.

What is the difference between certain and signal?

Certain marks a pattern that reads as AI in almost any post, like "In today's world" or "Let that sink in". A signal is softer, like a run of same-length sentences or a lot of dashes: worth a look, fine if it was a deliberate choice.

Do you store my post?

No. The text is checked on our server and thrown away. It isn't saved or sent to an AI model.

Want a finished post out of this?

PostedIn writes it in your voice, and the AI Editor cuts everything that sounds like AI. 7 days and 100 credits free when you connect LinkedIn. No card needed.

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