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General

Cardboard is a browser-based AI-powered video editor. You can upload video footage, edit it using plain-English AI commands or manual timeline editing, and export professional-quality videos — all from your browser.
No. Cardboard runs entirely in your browser. There is nothing to install. You just need a modern browser like Chrome, Firefox, Safari, or Edge.
Cardboard is optimized for desktop and laptop browsers. You can access it on tablets, but the full editing experience works best on a screen that is at least 13 inches wide.
Yes. Your media files are encrypted in transit and at rest. Cardboard does not use your content to train AI models. Only you and people you share a project with can access your files.
Cardboard works best on the latest versions of Chrome and Edge. Safari and Firefox are also supported. We recommend Chrome for the best performance.

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AI editing

You type a plain-English instruction in the AI Chat panel (for example, “trim to the best 30 seconds” or “add captions”). The AI analyzes your video, decides what to do, and applies the edits to your timeline. You can see exactly what changed and undo anything. Learn more in How to Talk to Cardboard.
The AI can trim, split, and rearrange clips. It can create montages, add transitions, generate captions, adjust pacing, add music, apply effects, find specific moments in your footage, and much more. See How to Talk to Cardboard for examples.
Yes. Every AI edit can be undone with Cmd/Ctrl + Z or by typing “Undo that” in the AI Chat. Your original media files are never modified.
The AI Chat currently accepts instructions in English. However, the AI can transcribe and caption videos in 20+ languages. See Auto-Generated Captions for the full list.
Captions are highly accurate for clear audio in supported languages. You can always review and edit captions after they are generated. Background noise or overlapping speakers may reduce accuracy.

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Media & projects

Cardboard supports:
  • Video — MP4, WebM, MOV, MKV
  • Audio — MP3, WAV, AAC
  • Images — PNG, JPG, GIF, WebP
File size limits depend on your plan — up to 1 GB on Creator and up to 5 GB on Pro. Total storage also varies by plan. See Plans & Pricing for details.
The number of projects depends on your plan — Creator allows 5 per month, while Pro and Teams are unlimited. See Plans & Pricing for details.
Team collaboration is available on the Teams plan. You can invite team members, share projects, and work together. See Plans & Pricing for details.

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Exporting

You can export as MP4, WebM, MOV, or MKV. Resolutions range from 480p to 4K. See Formats & Quality Settings for recommendations by platform.
Yes. Cardboard can export an XML timeline that you can import into Adobe Premiere Pro or DaVinci Resolve for further editing. See Export Your Video for details.
Export time depends on the video length, resolution, and complexity. A typical 2-minute 1080p video takes 30 seconds to a few minutes.
There is no watermark on any paid plan. Free trial exports may include a small Cardboard watermark.

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Billing

Yes. You can try Cardboard free for 7 days with full access to all features. No credit card required to start. See Plans & Pricing for details.
Yes. You can cancel anytime from your account settings. Your access continues until the end of your current billing period.
Cardboard accepts all major credit and debit cards. Annual plans are also available at a discounted rate.

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Still have questions?

Reach out to us at founders@usecardboard.com — we typically respond within a few hours.

Troubleshooting

Solutions for common technical issues.

Your First Video in 5 Minutes

Follow the quickstart guide to get started.