Your brand voice.
Every platform. In 30 seconds.
Drop in a rough idea, a voice memo, a product link, or a launch brief — Caption Studio turns it into platform-ready captions for Instagram, TikTok, YouTube, LinkedIn, Facebook, and email. Instantly.
Free. No signup. Powered by Nova.
30 seconds · No credit card · 6 platforms at once
The studio
Software, not a webpage.
A real composition surface — toolbar, multi-platform tabs, brand-voice control, compliance mode, and a side panel that suggests the next move.
Caption Studio · Untitled draft · auto-saved
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Brand voice · Veridian
Sera suggests
One brief. Six platforms. Done.
Input
Brief:"New single dropping Friday. R&B vibe. Emotional breakup theme. Want something personal and real."
Brand voice:Emotional, authentic, lowercase
Platforms:All
Output — 6 captions
Instagram
"you deserved better. i knew that even while i was the one hurting you. friday. 🖤 [link in bio] #rnb #newmusic #emotional"TikTok
"POV: writing a song about someone who deserved more than you gave them 🎵 dropping friday"YouTube
"New single out Friday — this one's about accountability, heartbreak, and what you say when it's too late."LinkedIn
"Releasing my most personal song to date this Friday. Sometimes the most honest creative work is the hardest to share."Twitter/X
"new song friday. it's the one that scared me most to finish. 🖤"Email subject
"It's out Friday (and it's the most honest thing I've written)"How it works
1
Drop your brief
Type an idea, paste a transcript, upload a voice memo, or paste a product URL. Any format works.
Text / Voice memo / URL / Transcript
2
Set your voice
Choose a tone preset or activate your saved Brand Voice Profile.
Casual / Professional / Hype / Storytelling / Educational
3
Get 6 platform outputs
Every caption is optimized for its platform — character limits, hook placement, hashtag strategy, CTA format.
6 platform cards · character count indicators
4
Edit, copy, or send to calendar
Make a quick edit, copy to clipboard, or push directly to your Content Calendar with one click.
Edit · Copy · Send to Calendar
It actually sounds like you. Not like an AI.
Set your brand voice once. Every caption feels like you wrote it.
Setup — 3 steps
1
Answer 5 questions about your tone and style2
Paste 3 examples of your best past captions3
HookPilot builds your voice profile — activated instantlyWithout brand voice
"Exciting news! Our new product is now available. Shop now and experience the difference. Link in bio."
With brand voice — fitness coach, motivational, direct
"no excuses left. the program is live. if you're serious about changing your body this year, the link is in my bio. let's go."
94% voice match after 10 outputs
Your brand voice profile is private to your workspace. It never trains anyone else's model.
Optimized for every platform
Instagram
First line must stop the scroll — hook before everything
138–150 characters for feed posts, longer for carousels
3–5 targeted hashtags, not 30 generic ones
Line breaks for readability on mobile
"nobody told me freelancing would feel this lonely at 11pm on a wednesday.
so i built the community i needed.
if you're a solo creator grinding without a team, my free discord opens friday. link in bio. 🔗"
187 chars · 0 hashtags · CTA: link in bio ✅
Generate for Instagram
so i built the community i needed.
if you're a solo creator grinding without a team, my free discord opens friday. link in bio. 🔗"
187 chars · 0 hashtags · CTA: link in bio ✅
TikTok
POV hooks and direct address outperform editorial openers
Under 150 characters — viewers don't expand captions
Include a trending sound reference or challenge tag if relevant
CTA goes at the end: "comment X" or "follow for part 2"
"POV: you uploaded your song at midnight and woke up to 10K views. this is how we got there 🎵 #indieartist #musicmarketing"
Generate for TikTok
LinkedIn
Hook in the first sentence — LinkedIn cuts off at "see more"
Storytelling or insight posts drive 3x more comments than announcements
No hashtag stuffing — 2–3 max, relevant only
End with a question to drive comments and algorithmic boost
"I almost didn't share this.
We launched with zero budget, zero following, and zero paid ads. Six months later, we're profitable.
Here's the exact content system that did it:"
Generate for LinkedIn
We launched with zero budget, zero following, and zero paid ads. Six months later, we're profitable.
Here's the exact content system that did it:"
YouTube
First 125 characters show in search results — front-load keywords
Include a link in the first 3 lines — before "show more"
Chapters with timestamps increase watch time and discoverability
Include subscribe and notification CTA naturally at the end
"New single out Friday — this one took 3 years to finish. Links below. [Stream] [Pre-save] [Behind the scenes]
0:00 The story behind the track
1:45 First listen
4:20 How it was recorded"
Generate for YouTube
0:00 The story behind the track
1:45 First listen
4:20 How it was recorded"
Email
Subject line drives open rate — curiosity gap or clear value
Preview text is the second hook — don't waste it with "View in browser"
One CTA per email — multiple links kill conversion
First sentence visible in preview pane — make it count
Subject: "It's out Friday (and it's the most honest thing I've written)"
Preview: "This one took 3 years. You'll understand why when you hear it."
Generate for Email
Preview: "This one took 3 years. You'll understand why when you hear it."
47,213,000
captions generated and counting
★★★★★
"I post every day now. Caption Studio is the only reason that's possible."
★★★★★
"Our product captions used to take 2 hours per shoot day. Now it's 10 minutes."
★★★★★
"Every single rollout we've done in the last 6 months started in Caption Studio."
Teams using Caption Studio publish 4.3x more consistently than teams writing manually.
Built for your workflow
Music Releases
Drop your single with a full caption rollout — teaser, drop day, post-release, and streaming push. All from one brief.
- Pre-release teasers (7 days out)
- Drop day captions for every platform
- Post-release momentum captions
- Playlist pitch email copy
Ecommerce Brands
Turn your product page into a week of social content — benefits, UGC prompts, sale announcements, and review requests.
- Connects with Shopify product descriptions
- Seasonal campaign templates built in
Fitness Coaches
Every transformation post, challenge launch, and program promo — written in your coaching voice, without 45 minutes of staring at a blank page.
- Transformation post templates
- Challenge launch copy
- Program promo sequences
Real Estate Agents
Listing captions, open house promos, neighborhood content, and market update posts — platform-ready in under a minute.
- Listing descriptions for every platform
- Open house announcement copy
- Market update post templates
Advanced caption features
Pro feature
Caption A/B Tester
Generate two caption variants for the same brief. Publish both. HookPilot tracks which gets more engagement and adjusts your voice profile accordingly.
- Variant A: Statement hook
- Variant B: Question hook
- After 48 hours: auto-update voice profile
Pro feature
Caption → Carousel
Take any caption and expand it into a 5-slide carousel script — ready for Kai to turn into a visual concept.
- Slide 1: Hook (matches caption hook)
- Slides 2–4: Expanded talking points
- Slide 5: CTA slide copy
Pro feature — coming soon
"Caption This" — Image Upload
Drop in a photo or clip and get 6 platform captions generated from what's in the image — in 15 seconds.
- Upload photo or video clip
- HookPilot analyzes visual content
- Suggests hashtags + trending audio
Caption Studio is just the start
→
Caption ready? Send it to Juno for scheduling
Push approved captions directly to your content calendar.
Content Calendar→
Want a full campaign? Activate Sera
Turn this brief into a 30-day content plan with the full agent team.
See agents→
Got a caption that's working? Repurpose it
Turn one great caption into 10 formats with the Repurpose Engine.
Repurpose EngineTry Caption Studio free.
No credit card. No learning curve. Your first 6-platform caption in 30 seconds.
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