Turn your Replit app into a narrated demo video
Yes — InstaDemo makes demo videos for Replit apps. Paste your Replit URL and it records a walkthrough, writes the narration script and generates the voiceover automatically. No screen recorder, no editing, no voice talent. The free plan includes 5 demos a month; Pro is $19/month for 50 at 1080p with no watermark.
Replit apps land in InstaDemo often enough to warrant their own notes — mostly because of one thing that will otherwise ruin your recording.
The problem with shipping on Replit
You built the thing. But every time you share the Replit link, the person opening it hits a cold start and a blank screen, and you lose them before they see anything.
What to know for Replit specifically
- Wake the app first. Instances that sleep when idle serve a loading or error state to the first request — and if that request is the recorder, that is what ends up in your video. Open the URL yourself, confirm it renders, then generate.
-
Use the deployed
*.replit.appURL rather than the in-editor webview. - For anything slow to boot, load it once and give it a moment before starting the demo.
How it works
- 1. Paste your Replit URL.
- 2. InstaDemo crawls the site and picks the pages worth showing — you can change the selection.
- 3. It writes a narration script from your real page content. You review and edit it.
- 4. It records the walkthrough, generates the voiceover, and returns a finished MP4.
See one
A recent demo generated from a URL, start to finish, with no human editing.
Watch a sample demo →Replit demo videos — questions
My Replit demo came out blank or showed an error — why?
Almost always a sleeping instance. If the app spins down when idle, the recorder's first request wakes it and captures the loading state. Open the URL yourself first, confirm it renders, then generate the demo.
Should I use the editor webview URL or the deployment URL?
The deployment URL. The editor webview is tied to your session and is not a stable public page.
Can I regenerate if the first attempt looks wrong?
Yes. Free accounts get 5 demos a month, so a retry after warming the app costs nothing.
Make one now
Paste your Replit URL and get a narrated demo video back. 5 free demos a month, no card required.
Generate my demo video