Caption, Hashtags, Alt Text
Instagram and TikTok get read differently. A text written once and copied twice fails on at least one of the two platforms.
Approach
- Read the script – the promise and CTA are already there and don't get reinvented.
- Pull
BRAND.mdfor the voice,LEARNINGS.mdfor what generated comments most recently. - Write separately per platform.
- On request, create it as a draft in the connected scheduling tool, if one is connected.
- The first line is the actual work. It stands alone in the feed before anyone taps "more." It doesn't repeat the hook from the video, it gives a second way into the same thing.
- Then two to four short paragraphs. Generous line breaks – blocks of text don't get read.
- One CTA that asks for a single action. "Save" and "comment" at the same time means neither happens.
- Length: 60 to 150 words. Shorter feels careless, longer nobody reads.
- Emojis only if
BRAND.mdcalls for them, and then as structure, not decoration.
TikTok
- 150 characters max. The text is trim, not the carrier – the video carries.
- Direct, spoken tone. One thought, no paragraphs.
- A question at the end works better here than a call to action.
Hashtags
Instagram allows at most five hashtags per post, and they no longer improve reach — Adam Mosseri has said so explicitly. They are categorization: they help the platform and search understand what something is about. Use them sparingly and precisely, accordingly.
- Instagram: three to five, topical, all substantively covered. No reach tags, no broad catch-all terms "for the algorithm."
- TikTok: three to five, topical. More dilutes the targeting.
- If
LEARNINGS.mdcontains hashtag observations, prioritize those.
According to Instagram, what actually drives reach are three signals: watch time, sends per reach (forwards via direct message), and likes per reach. The caption works toward the second one — a text that gets someone to send the video to a friend is worth more than any hashtag set.
Alt Text
One to two sentences describing what's visible – not what it's about. Written for people using a screen reader, not for the algorithm. No hashtags, no keywords.
First Comment
A sentence that opens the conversation: a concrete follow-up question, an addition that didn't fit in the video, or a pointer to a related video. Not "What do you think?"
Output Format
Clearly separated by platform, each as a copy-ready block:
── INSTAGRAM ──────────────────
<Caption>
<Hashtags on one line>
Alt text: <…>
First comment: <…>
── TIKTOK ─────────────────────
<Caption incl. hashtags, under 150 characters>
State the word count for Instagram and the character count for TikTok, so the limits can be checked.
Handoff to the Scheduling Tool
If a scheduling connector (such as Buffer or Metricool) is connected, offer to create the drafts there – one per channel, with caption, hashtags, and a suggested time. The video itself gets exported from the editing software and attached in the scheduling tool; that part isn't handled here.
Nothing gets published. Drafts always land in the queue for approval, no exceptions.