Observed arrival · 2026-11-13
Caption Fit Lab checks captions before they’re burned in
A browser-based caption tool checks reading speed and line fit, previews captions in a vertical frame, adjusts timing, and exports SRT files.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People preparing captions for short-form video
- Worth noticing
- The homepage says caption calculations stay in the browser and files stay on the device.
Field notes
The speed check covers characters per second as well as line length, line count, and overlaps. The preview is described as combining a phone frame, a local video, and the caption; a separate guide example uses HTML so readers can inspect inputs and results without running a script.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
One card from the complete issue