Captions in your voice, in seconds.
Upload a finished post — image, carousel, or reel — and Captiv reads what is actually in it, then writes publish-ready captions and hashtags that sound like you.
No login required · works on image, carousel, or reel
reel · 0:15Everything I wish I knew before Lago di Braies 👇 → get there before 8am (after that it's tour buses + a 45-min boat queue) → rent the rowboat first, photograph second → June–Sept only, snow closes the road → pack a layer, it's 10°C on the water even in July Save this for the trip. 📌
why · Leads with the payoff and a tight checklist — built to earn the save, not the scroll-past.
Three years ago this lake lived in a folder on my phone called ‘someday.’ I'd open it on the grey commute days, the 6pm-already-dark days. This morning I rowed to the middle of it and just sat there. Same water I'd stared at for years — completely different life. This is your reminder to book the someday trip. 🤍
why · A first-person 'someday → now' arc, the emotional narrative shape your most-saved posts use.
I've re-edited this clip six times and still can't make the water look as unreal as it did in person. Lago di Braies at 6am — before the boats, before the buses. No filter, that's just the color. 📍 add it to the list.
why · Opens with a relatable creator confession — the scroll-stopper your hooks always lead with, no 'I' narrative.
The caption is the part the algorithm can read.
Your photo or reel is invisible to search until you describe it. The words underneath a post are what platforms index, rank, and recommend — which makes the caption box the highest-leverage SEO field you fill in all day.
Social platforms are search engines now
People search TikTok, Instagram, and YouTube the way they search Google — and results are matched against the words in your caption and description. A keyword-rich caption keeps a post findable long after it leaves the feed.
Feeds rank what they can understand
Recommendation systems categorize a post from its text signals — caption, hashtags, on-screen text — to decide whose For You page it lands on. A vague caption gets your post shown to the wrong audience, or no one.
Good captions compound your reach
A caption that hooks earns saves, comments, and shares — the exact signals feeds weight most. And because Google indexes social posts too, a well-written description works as SEO beyond the platform itself.
That’s the work Captiv does for you — publish-ready, keyword-aware captions in seconds. Try it on your next post →
Everything you need to stop writing captions yourself.
Reads your actual post
AI vision looks at what is really in your image, carousel, or reel — the subject, the mood, the details. Captions reference your post, never a generic template.
Sees the post, not a placeholder.Three angles, one click
Every generation returns three structurally distinct captions — a hook, a story, and a value angle — each with its own hashtags and a one-line why so you can pick with intent. Or hand Captiv your own draft and get it optimized three ways.
Hook · Story · ValueSounds like you
Captiv learns your voice from what you keep, edit, and copy — a dialed-in meter that climbs over time. On Pro, every caption is voice-matched, and you can seed the profile with captions you have already written.
Voice 62% dialed inEvery platform
Tuned per platform out of the box — Instagram, TikTok, LinkedIn, YouTube, Threads, Pinterest, and X. YouTube and Pinterest even get a search-ready title, not just a caption.
IG · TikTok · LinkedIn · YT · Threads · Pinterest · XFrom finished post to copied caption in three steps.
Upload your finished post
Drop in an image, carousel, or reel. No login, no setup, no empty forms to fill out first.
Pick your platforms
Choose from seven platforms — Instagram, TikTok, LinkedIn, YouTube, Threads, Pinterest, X — or all of them. Each gets its own tuned output.
Get 3 captions, copy the one you love
Three angles in seconds. Edit inline, copy your favorite, and Captiv quietly learns your voice.
3 captions, start to finish
distinct angles every time
platforms, individually tuned
logins to try it
Start free. Upgrade when it clicks.
Try Captiv without a login. Add your email for more captions each month, go Pro for captions in your voice, and go Studio for 10× the volume when you post every day.
- 3 free generations to try, no login
- 5 generations/month with a free account
- All 7 platforms
- Write your caption — AI optimizes it
- Single-image analysis
- 50 generations/month
- Voice profile — captions that sound like you
- Video + carousel analysis
- Creative direction — describe it, Captiv writes it
- Everything in Free
- 500 generations/month — 10× Pro
- Everything in Pro
- Priority support
Small business or agency? Custom volume, invoicing, and onboarding for teams.
Cancel anytime · your voice profile keeps learning on every plan
Stop staring at an empty caption box.
Upload your next post and get three publish-ready captions in seconds. No login to start.