Ghostpen extracts the most engaging moment from your YouTube video and turns it into an Instagram caption that stops the scroll — in the more energetic, direct register your Instagram audience expects.
Try it Free →Illustrative workflow example
YouTube video
“My Meal Prep Routine That Saves 6 Hours a Week”
22-minute walkthrough of a Sunday prep system — four meals, one protein base, two grain bases, and a sauce rotation that keeps it from feeling repetitive.
Generated Instagram caption
The meal that runs half my week 🔁
Hook leads with the strongest single idea from the video. Caption body gives three concrete details. CTA invites saves without sounding transactional — matches the creator's direct, warm Instagram register.
Illustrative example. Actual output varies based on video content and Voice DNA™ profile.
Ghostpen transcribes the video and identifies the key moment — the statement, demonstration, or reveal that translates best to the Instagram surface and its visual-first audience.
Instagram captions complement a visual — they don't summarise it. Ghostpen identifies the hook statement and builds the caption structure: hook line, context, CTA — all in 150–300 words that fit the platform.
Your Instagram register is more energetic and direct than your YouTube register. Both are authentically you — but the platform shapes the voice. Voice DNA™ models your Instagram surface profile separately, ensuring the caption sounds like you at your most engaging, not like a video description.
Instagram captions start working before the more button — or they don't work at all. Content Score™ evaluates Hook Strength as the primary dimension. Target 75+ before posting.
Only if they sound like repurposed content. Voice DNA™ builds a separate surface profile for Instagram — the sentence length, the energy level, the emoji usage (or deliberate absence), the CTA style. These are modelled from your existing Instagram presence, not copied from your YouTube description. The caption feels native to the platform because it was generated for the platform, not adapted from another one.
Every post on Instagram competes with native Instagram content. Yours should sound like it belongs there.
Content Score™ — Hook Strength weighted for Instagram
Instagram captions live or die before the “more” button. Content Score™ evaluates Hook Strength as the primary dimension — giving you the score and the reasoning before you post. Target 75+ to ensure the first line earns the tap-through.
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