Specreel
Product demos that update themselves
100 followers
Product demos that update themselves
100 followers
Paste your app's URL and Specreel walks it in a real browser, turning your key flows into narrated, shareable demos. Already on Playwright? It renders them from your test traces on every green build, so a demo can't go stale. Open-source CLI + hosted Cloud.
Free
Launch Team
Render Sandboxes: a computer for every agentIsolated compute, persistent state and a real filesystem
Promoted
Hey Product Hunt 👋 I'm Dylan, and I built Specreel.
AI has made building software dramatically faster, and my own projects were no exception. When I did find time to record a demo video, it was out of date within a week. Since I'm always spinning up something new, it kept happening. So I set out to solve my own problem.
The one thing that never went stale was my end-to-end tests. They recorded the exact same browser flows on every build, and when the app changed, they failed instead of quietly drifting.
So Specreel treats them as one artifact: a recorded browser flow. Replay it = demo. Share it = send. Assert it = test.
Three ways in:
• Paste your app's URL → we open it in a real browser, suggest the flows worth showing, and turn them into a narrated, shareable demo gallery. Behind a login? Add a test account and we sign in first.
• Already on Playwright? Turn on tracing and point the open-source CLI at your trace.zip files (JS/TS, Python, Java, .NET). A GitHub Action republishes on every green build, so your demo is never older than your last passing build.
• Prefer to just ask? The MCP server lets Claude Code or Cursor run the whole loop.
Things I cared about:
– Captions come straight from your actions and assertions. They're deterministic and need no AI. AI narration and voiceover are opt-in, bring your own key.
– Typed passwords and one-time codes are masked automatically.
– You never change your tests. The demo is just an output.
– Cloud is free to start. Team ($39/mo) adds scheduled re-checks and Slack/email alerts when a flow breaks. Viewers and reviewers are always free.
🎁 For the Product Hunt community: code PRODUCTHUNT takes 50% off any paid plan for your first 3 months (redeem by Nov 30). This link applies it when you sign up: https://app.specreel.dev/redeem/PRODUCTHUNT
The live gallery on our site is Specreel documenting itself: 12 flows of its own app, generated from its own test runs. Built for the Google Cloud Run hackathon: Specreel Cloud runs on Cloud Run.
I'd love your feedback, especially: what would you point it at first, and what would make you trust a demo you didn't record by hand?
The dream for anyone who hates re-recording lol. can i still control the pacing and where the cursor lingers? and is the narration a real voice or captions? 🫶
Thanks @emma_lagast! Having to re-record every time the UI changed is basically why I built this.
Pacing follows the actual run, so each step plays about as long as it took in the browser, plus a beat to read the caption. With narration on, it waits for each sentence to finish before moving on. The cursor and click show up where the click actually happened. There isn’t a way to say “hold here for 3 seconds” yet, but that’s a good idea and I’m adding it to the list.
Narration is both. Captions are always on screen, and the speaker button reads them out loud in your browser’s voice. If you want a more realistic voice, the open source CLI can generate a studio voiceover with your own OpenAI key and add it to the MP4.
demos that fix themselves when the ui changes, finaly 🙌 do u support teams already?
@petrkovacik we sure do! Teams are supported.
Linking demos to passing tests makes sense. For ecommerce demos, can I redact customer names, email addresses and order details before a gallery is published, and keep each refresh private until reviewed?
These are good questions @richard_hemmings. Projects can be private, and a review link lets anyone view, comment and approve a build without an account, so you can keep a project private and share the link until you’re happy. Public galleries serve the current build as soon as it publishes, so holding a refresh for review on an already-public project is on my list, not built yet. On the data: point Specreel at a seeded test account or workspace, not production. Frames are recorded as-is, so there’s no after-the-fact redaction of names or order details. What you type into password and one-time-code fields is masked automatically.
Demo tied to a green build is the right call. Stale demos are worse than none.