Product demo videos
Walk through features with split-media, step-by-step, and code slides — narrated, with a clickable CTA built in.
Prompt → a video you can share
Turn an idea into an interactive video
Describe what you want. Hiroi writes the script, designs every slide, and narrates it — then renders it as a video. Share a link people watch and click right in their browser, or download a polished MP4 in 16:9 or 9:16. No filming, no editing software, all in the browser.
No credit card to start
Shareable, clickable links
Download MP4, PPTX & PDF
Everything it takes to script, narrate, and ship a video — in one place
AI script & design
Timed AI voiceover
Clickable share links
MP4 in 16:9 & 9:16
One-click themes
28
Structured layouts the AI can't break
3
Free decks to start, no card
1:1
Preview matches the exported video
16:9 / 9:16
Export for web or social
Made for
One prompt, three kinds of video
Hiroi reads your intent and shapes the script, pacing, and layouts to match — then narrates and renders it.
Explainer videos
Make a concept stick with agendas, key-point slides, and big-stat moments — voiced and paced for the watcher.
Pitch & promo videos
Open strong, land the numbers, and close on a confident call to action — as a link you share or a file you post.
See what it makes
Every kind of slide your story needs
A bold opener, a hard number, a side-by-side, a quote, a step-by-step — Hiroi picks the right layout for each beat and keeps it on grid. A few of the 28:
HeroOpen with impact
Big statLand the number
Key pointsMake it scannable
ComparisonShow the contrast
QuoteIllustrative example
ProcessWalk through the steps
The problem with AI slides
Most generators free-draw, so the layout breaks
Hiroi never paints pixels onto a canvas — it picks from twenty-eight typed layouts and fills named slots, so spacing, hierarchy, and alignment stay clean on every slide.
- Twenty-eight typed layouts the AI can't break
- Named slots keep hierarchy and spacing intact
- Regenerate one slide against the original plan
Re-theming, instantly
Recolor a whole deck without redoing a single slide
Curated palettes and type pairings restyle the entire deck in one click — and the preview is frame-for-frame what you export. Try it: flip this deck between light and dark.
- One render path — preview equals export
- Themes restyle every slide at once
- Contrast stays readable on any background
Silent decks don't sell
Every slide ships with a real, timed voiceover
Hiroi writes a narration script for each slide and synthesizes it to speech, paced to the slide. Edit the words and the timing re-paces automatically — then record the whole thing as video.
- AI-written narration, grounded in your sources
- Text-to-speech timed to each slide
- In-browser export to 16:9 or 9:16
Narration Script
Voice: Ava
"Here is how the narration engine works. Each bullet is synthesized into natural speech, and the slide timing automatically matches the length of the voice track..."
How it works
From blank page to finished deck in three steps
1
Prompt
Describe your topic and audience. Hiroi plans a narrative arc and fills each slide on a smart, on-brand layout.
2
Edit
Refine copy, swap layouts, tune the narration, and pick a theme in a live editor that previews exactly what you'll export.
3
Ship it
Share a link people watch and click, download a narrated MP4 in 16:9 or 9:16, or present it live — whatever the moment needs.
Deliver it
Two ways to ship your video
Share it as a living link or download a finished file — and because there's a real deck underneath, you can still present it live or hand off an editable PowerPoint.
Interactive share link
Send one link. People watch the whole thing play in their browser — narrated and animated — and click your call-to-action buttons mid-video. No upload, no file to manage, always the latest version.
Downloadable video
Render a voiced MP4 with motion and transitions baked in — 16:9 for the web, 9:16 for TikTok, Reels & Shorts. Yours to post anywhere, forever.
Present live
Run it full-screen in your browser and present it yourself — no upload, no install.
PowerPoint & PDF
Download an editable .pptx to re-brand in your own tools, or a clean PDF for handouts.
Prompt to render
Watch a sentence become a finished video
You write one line. Hiroi plans the arc, designs each slide, writes the voiceover, and renders a video you can ship — share the link or download the file, without leaving the browser.
- Beta pricing — 15% off every credit pack while Presents is in beta, applied automatically at checkout.
- Education pricing — teachers, students & school staff get 30% off; just sign in with your school email.
- Climate pledge — 1.5% of every purchase goes to removing CO₂ from the atmosphere through Stripe Climate.
Your prompt
"A 90-second product demo that shows how Hiroi turns a prompt into a narrated video."