Free Tool

Subtitle Shifter & Converter

Shift out-of-sync subtitle timing, convert between SRT and VTT, and edit cue text — all inline.
Free, private, no upload to a server. Everything happens in your browser.

All processing happens 100% in your browser — your subtitle file is never uploaded anywhere.

Upload a Subtitle File
SRT or VTT — format is auto-detected
.srt.vtt
Drag & drop or click to browse · Max 10 MB
Don't have a file handy?
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Built by Perry — tools I needed, free for anyone who wants them.