Audifyer: Presentations to narrated videos with AI voice

Challenge & Approach

Turning a slide deck into a narrated video normally means booking a voice artist, recording take after take, and re-editing everything when a single slide changes, which puts video out of reach for most teams producing training and marketing content. We built a cloud platform that does it end to end: decks are imported from PowerPoint or text, or built in a browser canvas editor, then narrated by AI voices with animations, transitions, and captions synced to speech. Rendering happens in the browser using hardware-accelerated WebCodecs, so there is no server render queue, and the multi-tenant backend enforces per-plan quotas with query-level isolation so one customer's data, including voice samples, can never surface in another's account.

A webApp that renders narrated videos without a studio

What used to take a studio booking and a full editing cycle now happens in a browser in minutes, and updating a slide means a re-render rather than a re-record. Voice cloning keeps narration consistent across an entire content library, auto-generated captions make every video accessible, and client-side rendering removes server cost as a scaling ceiling. The platform ships as a five-tier SaaS with usage metering and role-based access, ready for billing at scale.

Key Features

• Deck to narrated videoImport a PowerPoint file or plain text, or build a deck in the browser editor, and get a fully narrated MP4 with no recording or editing.
• Voice cloningClone a voice with consent tracking and quality validation, then reuse it across every deck for a consistent brand voice.
• Speech-synced animation and captionsEntrance animations, slide transitions, and captions all time themselves to the narration automatically.
• In-browser video renderingHardware-accelerated WebCodecs encoding produces the final MP4 client-side, removing server render bottlenecks entirely.
• Multi-tenant with plan quotasTiered plans with usage metering, role-based access, and query-level tenant isolation protecting customer data and voice samples.

Technology