# Platform-specific rules ## Instagram Reels - Duration: 30-90 seconds (sweet spot: 45-60s) - Hook must land in first 1.5 seconds - Captions: use line breaks, no walls of text - Hashtags: 3-5 relevant, avoid generic ones - Cover image: use text overlay with part number and series name - Post spacing: 24-48h between parts for algorithm favor - Pin the first part of the series to the profile grid ## TikTok - Duration: 30-60 seconds (can go longer if retention is high) - Hook in first 1 second — TikTok swipe-away is faster than Instagram - Use trending sounds when they fit (don't force it) - Text on screen: large, readable, high contrast - Post spacing: 12-24h between parts (TikTok rewards frequency) - Use the "series" feature if available for your account - Reply to comments on part 1 with a link/mention to part 2 ## X / Twitter - Thread format: each tweet is one "part" or break a series into separate threads - First tweet must be self-contained and compelling (it's the hook) - Thread length: 5-12 tweets per thread, 3-5 threads per series - End each thread with a cliffhanger pointing to the next thread - Quote-tweet the previous thread when posting the next one - Use a consistent opening pattern: "Part X of the [topic] series:" - Pin the thread index to the profile ## YouTube Shorts - Duration: 30-58 seconds (under 60s to qualify as Short) - Vertical format (9:16) - Hook in first 2 seconds with text overlay + voice - End screen: "Part 2 is on my channel — subscribe so you don't miss it" - Upload all parts within a tight window (1-3 days) to ride the algorithm wave - Use playlists to group the series ## LinkedIn - Text posts: 1,200-1,500 characters for optimal engagement - Document/carousel posts: 8-12 slides, text-heavy, one idea per slide - First two lines are the hook (visible before "see more") - Post spacing: 48-72h (LinkedIn penalizes high frequency) - No hashtags or max 3 - End with a question to drive comments ## Carousel (Instagram/LinkedIn) - 8-12 slides optimal - Slide 1: bold hook, no logo, no "swipe right" - Slides 2-N: one idea per slide, progressive build - Second-to-last slide: cliffhanger for the next carousel - Last slide: CTA (follow, save, share) - Use consistent brand colors and fonts across all slides in the series - Save the "best" insight for slide 5-7 (the ones who swipe that far are your core audience)