First party

Tools

Tools built by Offbrain. Every limit appears before the action.

Workbench

One tool at a time, working on the page rather than described on it.

04ToolLink checker ready, transcription offline

Video to Text

Paste a YouTube or TikTok link to check its format and save it. Transcription is not available on Spark yet.

Nothing queued. This preview checks and keeps the link format only. Transcription is not available on Spark.

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Transcription plan, not connected

Published captionsIf a public caption track exists, checking it first can avoid an upload.
Local speech to textPrivate, runs on Offbrain hardware, no audio sent to a provider.
Capped paid providerLast resort, hard spend brake, closed to the public bench.

Limits, receipt and bench status

Spark checks only whether the address looks like a supported YouTube or TikTok link. It does not open the video or send the link.

YouTube and TikTok link formats only. This public preview does not open the video, check its duration or reach local or paid transcription. It hands the link back ready to keep.

Receipt

Source: First party. Made by Spark.
Cost: Free to check and keep a link. Transcription is not connected here.
Free route: Open the video and read the platform’s own caption track directly.
Tested: 2026-07-26
Material connection: First-party preview built by Offbrain. Transcription is not available on Spark.
The catch: Two platforms, one link at a time. This preview validates the address format only and never creates a transcript. You get your link back, never a fabricated transcript.

Also on the bench

Full text feedsEvery entry, complete, in RSS and JSON FeedReady
Weekly digestOne email a week collecting the best of the stackNot connected
Transcript deliveryReturn finished text to the reader in the browserNot built