Instagram caption generator that starts from your real content.
Postiva turns a blog post, article, or landing page into a ready-to-post Instagram caption with hashtags and a call to action. You paste a URL or your own text, and Postiva reads the page, pulls out what actually matters, and writes the caption from that. The same run also writes the TikTok script, the Facebook post, the LinkedIn variants, the X thread, and the newsletter section, because every platform is generated together rather than one at a time.
Most caption tools ask for a topic and guess the rest, which is why their output reads like it could be about anything. Working from a real source is the whole difference.
No credit card for the trial. Every plan includes all six platforms.
You came for the Instagram caption. The rest come with it.
Postiva writes every platform you keep from the same source in a single run. Not one tool at a time, and not one generation each.
Source
One URL or pasted text
yoursite.com/blog/the-post-you-just-published
One generation
Carousel slides, caption, hashtags, and a call to action.
Two post variants: a professional one and a founder voice.
A hook, a five to eight post thread, and a standalone post.
One conversational post written for the feed.
A hook, a spoken script, on-screen text, and the caption.
Script, hook, and on-screen text to film yourself. Postiva does not record video.
Three subject lines, an email-ready body, and a CTA.
Every platform is selected by default, and one generation covers all of them whether you keep one or all six. Instagram carousel slides are rendered and zipped in the same run at no extra cost. AI post images, voiceovers, and lead magnet PDFs have their own separate allowances.
Three steps, start to finished.
- 01
Paste a URL or your own text
A blog post, article, landing page, case study, or newsletter draft. When the source is not public, paste the text instead and it works the same way.
- 02
Postiva reads the page
The extractor keeps the title, headings, paragraphs, and lists, and throws away navigation, cookie banners, ads, and footers. Cleaner input is what makes the caption specific rather than generic.
- 03
Your caption comes back ready
Copy it straight out, and find the hashtags, the call to action, the carousel slides, and every other platform you kept sitting in the same project. They all arrive together.
One paste in, a full Instagram post out.
The Instagram output is not just the caption. Everything below comes from the same source in a single run.
The caption itself
Written for the feed in the tone of voice saved on your brand kit, with the hook doing real work in the first line.
Hashtags that fit the topic
Chosen from what the source is actually about, rather than pasted from a list of whatever is popular this month.
A call to action
The CTA text from your brand kit, worked into the ending instead of bolted onto it.
Carousel slide copy
The same source becomes 3 to 10 slides of hook, body, and closing copy. Postiva picks the count from how much the article has to say, or you set it yourself.
You could do this in ChatGPT. It just takes longer every week.
The writing is the part a chatbot handles well. The rest of the job is what turns a ten-minute task into an hour.
Postiva opens the URL for you, so there is no copying an article into a chat window and trimming the menus out by hand.
Your brand kit is applied on every run: tone of voice, social handle, CTA text, colors, logo, and fonts.
The same source produces LinkedIn, X, Facebook, TikTok, and newsletter versions in the same pass, each written for how that platform is actually read.
Projects are saved. Reopen a caption a month later, copy it again, or regenerate just the one platform that missed.
Built for people who publish every single week.
Postiva earns its place when content is a recurring job rather than a one-off. These are the people who feel that most.
Marketing and SEO agencies
Run every client from one workspace, keep a separate brand kit per client, and send finished work out on an approval link before anything goes live.
Freelancers and consultants
Turn the article you just wrote into a week of posts without opening a design tool or a second AI chat.
SaaS founders
Your changelog, docs, and blog already say something worth reading. This gets that onto the feeds without hiring for it.
Social media managers
Stop rewriting the same idea six times. One source, six native versions, all saved and reopenable.
One source also becomes everything else.
Every tool here runs off the same paste. Pick the platforms you want before you generate and they all come back together.
Every plan includes every feature.
The plan sets how much you generate each month and how much storage you keep, not which tools you can open. Prices are in USD and billed through Paddle.
Starter
$15/month
30 projects a month, with 2 GB of kept assets.
Pro
$29/month
100 projects a month, with 10 GB of kept assets.
Agency
$79/month
400 projects a month, with 50 GB of kept assets.
Every team starts on a 14-day trial without a credit card. See the full pricing breakdown, including yearly billing with two months free.
What people ask before they start.
Is the Instagram caption generator free?
Every team starts on a 14-day trial that does not ask for a credit card. After the trial, plans start at $15 a month and include the other five platforms, carousel images, and the saved asset library.
Do I have to run each tool separately?
No, and this is the part most people miss. Every platform is selected by default when you create a project, and Postiva writes all of them from your source in a single run. One generation covers the whole set, whether you keep one platform or all six, so running the caption, the carousel, the TikTok script, the Facebook post, the LinkedIn variants, the X thread, and the newsletter section costs exactly the same as running just one. Instagram carousel slides are rendered and zipped in that same run at no extra cost. AI post images, voiceovers, and lead magnet PDFs are the exceptions: each has its own allowance.
Do I need to write a prompt?
No. You paste a URL or some text and Postiva handles the rest. There is no prompt to engineer, no chat thread to steer, and no follow-up message needed to get a usable caption.
Does it write hashtags as well as the caption?
Yes. Every Instagram run returns the caption, a set of hashtags drawn from the source topic, a call to action, and the slide copy for a carousel.
Can it match my brand voice?
Yes. A brand kit stores your preferred tone of voice, social handle, CTA text, website, colors, logo, and font style. Postiva applies it to everything it writes and everything it draws.
Does Postiva post to Instagram for me?
No. Postiva writes the content and lets you schedule it on a calendar, but you publish it yourself. Posting directly needs app review from each platform, which Postiva has not completed.
Can I use the same source for other platforms?
Yes, and it costs the same single run. Pick the platforms you want before you generate and you get LinkedIn posts, an X thread, a Facebook post, a TikTok script, and a newsletter section alongside the Instagram output.
Your next content run
A week of content is hiding in something you already made.
Paste the URL. Pick the channels. Let Postiva turn the useful thinking into a campaign your team can actually ship.
Start your first content run14-day free trial. No credit card required.