Observed arrival · 2026-09-26

SubToolbox: a local-first subtitle workbench

subtoolbox.best Visit website

Editorial interest 78/100 Selection signal · not a rating of the site

A browser-based toolbox for converting subtitle formats, repairing timing, merging tracks, and building SRT files.

Landing page captured for the 2026-09-26 issue.

For: People converting, editing, or repairing subtitle files
Worth noticing: The MicroDVD converter asks for a frame rate, defaulting to 23.976; the viewer also offers checks for overlaps and reading speed.

Field notes

The homepage groups 17 tools into format conversion, timing and repair, and creating files from scratch. Its descriptions call out format-specific behavior: VTT cue settings are dropped during conversion, while MicroDVD conversion uses a selectable frame rate with 23.976 as the default. A viewer is described as checking overlaps, numbering, tags, and reading speed.

Observed signals

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Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

ƒJavaScriptBrowser-side code central

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