LinkedIn AI Post Detector

About

A Chrome extension that analyzes LinkedIn feed posts and scores them for likelihood of being AI-generated using heuristic pattern matching.

What It Does

As you scroll your LinkedIn feed, the extension automatically analyzes each post and adds a small colored badge showing an AI probability score (0–100%). Click any badge to see a detailed breakdown of which signals were detected.

| Score | Color  | Meaning                |
|-------|--------|------------------------|
| 70–100 | 🔴 Red    | Very likely AI-generated |
| 50–69  | 🟠 Orange | Likely AI-generated      |
| 30–49  | 🟡 Yellow | Possibly AI-assisted     |
| 15–29  | 🟢 Light green | Mild AI signals    |
| 0–14   | 🟢 Green  | Likely human-written     |

Detection Signals

The extension checks for:

AI Phrases — Overused LLM phrases like "in today's rapidly evolving", "let's unpack", "delve into", "paradigm shift", etc.

Structural Patterns — Numbered lists, emoji-heavy formatting, hook→list→CTA formulas, one-sentence-per-line "bro-poem" style

Sentence Uniformity — AI text tends to have suspiciously uniform sentence lengths

Hedging & Filler — Excessive qualifiers like "it is worth noting", "broadly speaking"

Engagement Bait — "Agree?", "Thoughts?", "Tag someone who...", "Repost if..."

Repetitive Starters — AI often begins multiple sentences with the same phrase

Limitations

This is a heuristic tool, not a machine learning classifier. It looks for stylistic patterns commonly associated with LLM-generated text. That means:

- Some human writers who use corporate buzzwords will score high
- Well-edited AI text that avoids common patterns will score low
- It's best treated as a "sniff test," not a verdict