From subtitle file
to a confident delivery.
Find the conflict. Preview the adjustment. Check what changed. A focused workspace for SRT and WebVTT files.
No upload · No signup · Your original stays unchanged
00:00:01,000 → 00:00:04,000 The first speaker is still speaking. 00:00:03,800 → 00:00:05,000 A second speaker starts here.
Check the audio before changing either cue. Two speakers can overlap on purpose.
Four jobs. One careful workflow.
Start with the check you need.
Export a new file after reviewing the result.
Check subtitles
Find timing conflicts, damaged cues and hard-to-read lines before delivery.
Open tool →02Adjust timing
Preview a fixed offset or two-anchor drift correction, then export a new file.
Open tool →03Convert SRT & VTT
Convert text and timestamps with an explicit warning when styling will be lost.
Open tool →04Compare revisions
See timing and text changes between two versions before replacing the original.
Open tool →A clean report is a starting point.
Inspect the structure
Catch invalid timestamps and missing separators. Treat reading speed and overlaps as adjustable review warnings.
Preview a deliberate change
Use an offset for a constant delay, or two anchors for steady drift. Decide explicitly what happens before zero.
Check against the final video
Compare the exported revision, then listen and inspect the intended player. No text-only tool can verify the audio.
Small examples. Clear boundaries.
Overlapping subtitles: find the conflict before changing the timing
Use a reproducible SRT example to distinguish a timing collision from deliberate simultaneous speech.
Read the guide →Practical guideA fixed subtitle delay and subtitle drift need different adjustments
Measure two anchors before deciding whether an offset or a linear retiming is appropriate.
Read the guide →Practical guideSRT and WebVTT conversion: timing is only part of the file
Understand timestamp separators, identifiers and metadata loss before downloading a converted subtitle.
Read the guide →