Can it handle every codec?

Only codecs supported by your browser can be decoded and captured.

/media local tool

Video Thumbnail Sheet

Sample frames across a video for quick review and poster selection.

Local execution receiptinput path disclosedTool content stays out of MonoTools URLs and API requests.

Working input: Browser memory
Cross-tool handoff: Session only · 10 min
URL payload: Never
Export: Explicit action

Verify it: open DevTools Network, clear the log, use the tool, then inspect fetch/XHR requests. Page assets and optional aggregate analytics may use the network; tool input is not included.

Full privacy model

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How to use

01Choose a video file.
02Set frame count and columns.
03Generate and download the contact sheet.

FAQ

Can it handle every codec?: Only codecs supported by your browser can be decoded and captured.

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