
Product demo videos that re-record when your UI changes
Demo videos go stale every time your UI changes. DemoForge makes a demo a file: a short flow.json of Playwright steps, each with one line of narration. One command records your app with auto-zoom on every click, a smooth cursor and a voiceover that sets the pace. Fine-tune zooms, cuts and captions in a browser editor, then export an MP4. UI changed? Run it again. Claude Code can write and record the flow for you. Open source (MIT), runs locally, free voice included.
DemoForge is an open-source tool that automates the creation of product demo videos by recording UI interactions and generating a flow.json file with narration. It allows users to easily update demos when UI changes occur and includes features for editing and exporting videos.
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