How to edit, retime and convert subtitle files
Subtitle files often need adjustment—whether you're converting between formats, fixing timing issues, or adapting content for different platforms. Video editors, translators, and content creators handle these tasks regularly, but the edits shouldn't require expensive software or online services.
When and why subtitles need editing
Subtitles must stay in sync with video timecodes. When a video is re-edited, re-encoded, or played back at a different speed, every subtitle cue shifts out of alignment. Format conversion is equally common—content pulled from one platform may need adaptation for another. Readability matters too: dense walls of text overwhelm viewers, so professional subtitles must meet strict reading-speed limits.
Converting between subtitle formats
Many workflows demand conversion between formats. VTT (WebVTT) is the standard for web video players and HTML5 video tags, while SRT (SubRip) dominates in video editing software and offline workflows. The VTT to SRT converter handles this format shift without leaving your browser, preserving all timecodes and text.
Retiming subtitles in seconds
If your video was shortened, lengthened, or re-edited, all subtitle timecodes fall out of sync. Rather than manually adjusting every cue, the SRT time shifter batch-adjusts every subtitle by a consistent offset—add 2.5 seconds, subtract 500 milliseconds, or apply any fixed delta to realign the entire file in one pass.
Checking reading speed with CPS
Characters-per-second (CPS) limits ensure subtitles remain readable. Broadcast standards typically allow 15–20 CPS; exceeding this makes viewers miss text. The Subtitle CPS checker analyzes your SRT file and identifies lines that violate these thresholds, helping you spot where to shorten, split, or simplify text for better pacing.
Extracting subtitle text
Need the raw dialogue or transcript from a subtitle file? The SRT to text tool strips away all formatting and timecodes, leaving only the text. This is useful for translation, archival, transcription review, or repurposing dialogue as captions or summaries.
Your subtitle files stay private
All these tools run directly in your browser. Subtitle files never upload to a server, never leave your device, and require no account or login. You can work offline after the page loads, and your timing data, text, and video metadata remain private and secure.