# apphelp tool profile
name: Subtitle Time Shifter
tool: tool-subtitleshift
domain: subtitleshift.apphelp.net
canonical: https://subtitleshift.apphelp.net/en
summary: Shift the timing of SRT or WebVTT subtitles by a millisecond offset locally in the browser.
inputs: An SRT or WebVTT subtitle file and an integer millisecond offset that may be negative.
outputs: The same subtitles with every timestamp shifted by the offset, clamped at zero, in the original format.
use-cases: fix subtitles that are out of sync; advance subtitles that appear too late; delay subtitles that appear too early; batch-shift an entire subtitle file
keywords: subtitle time shift, srt offset, vtt resync, subtitle sync fix, subtitle delay tool
languages: en, zh-CN, zh-TW, ar, de, fr
seo: locale-routed, canonical, hreflang, sitemap, robots, JSON-LD
geo: llm.txt profile, concise task summary, input/output contract, use-case list, local-first privacy notes
privacy: browser-local processing, no upload by default
analytics: Microsoft Clarity and Google Analytics (opt-in)
no-login: true