Svensson.design

CaptionWeave · One-time purchase

Check subtitle timing and readability.

CaptionWeave gives creators and editors a local review pass for existing subtitle files. Inspect timing and readability, make selected edits, and export deliberately without generating new captions.

$15 USD · one-time purchase

Prices in USD. Final price and any tax are shown on Gumroad.

Tested on Mac in Chrome and Safari
Works offline. No account in the tool.

CaptionWeave – Actual product view with a fictional example.
Actual product view with a fictional example.

Who is it for?

For creators and editors with existing SRT or WebVTT files who want to review and adjust them locally.

What you can do

  • Open SRT and WebVTT files with up to 5,000 cues and 5 MiB per file.
  • Review exact millisecond timing and adjust selected cues with offsets, reflow, or empty-line proposals.
  • Use editable readability profiles as your own review preferences.
  • Save portable projects and export a review CSV while keeping the source beside the current draft.

How it works

  1. Open START.html and import an existing SRT or WebVTT file.

  2. Review the findings and make selected cue-level changes.

  3. Resolve negative or reversed timings that block export, then export in the format you choose.

Frequently asked questions

Can I work offline?

Yes. Open START.html from the downloaded folder. You need no account, server, or Node.

Does it create captions from audio or video?

No. It reviews SRT and WebVTT files you already have.

Can every WebVTT file be converted to SRT?

No. The tool prevents a conversion when it would lose information it is preserving.

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