How to Sync Subtitles (.SRT)
- 01
Upload your file: Drag and drop your out-of-sync .srt file into the box above.
- 02
Determine the delay: Figure out how many seconds your subtitles are off by.
- 03
Shift the timestamps: Enter a positive number (like 2.5) to make subtitles appear later, or a negative number (like -1.2) to make them appear earlier.
- 04
Download: Click sync and instantly download your corrected file.
Why Use Our Subtitle Resyncer?
Private by architecture
Subtitle text stays in browser memory. There are no uploads, server queues, or file-size gates.
Lightning Fast
No waiting for servers to process your request. Your file is ready in milliseconds.
Permanent static utility
No metering, no watermarks, and no file-size limits for normal browser workloads.
Frequently Asked Questions
What is an SRT file?
An SRT (SubRip Subtitle) file is a plain-text file that contains subtitle text along with the start and end timestamps indicating when each line should appear on screen.
How do I fix subtitles that get progressively worse?
A constant offset can be corrected here. Progressive drift usually comes from a framerate mismatch such as 23.976 FPS to 25 FPS and needs a linear timing conversion.
Supported Subtitle Standards & Common Framerate Ratios
ResyncSRT supports the common timing standards used when adapting SRT subtitles between video releases. Choose the ratio that matches the source and target video so dialogue stays aligned from the opening scene through the credits.
| Framerate | Common standard | Compatibility |
|---|---|---|
| 23.976 FPS | NTSC / BluRay | VLC, Plex, Kodi, MPC-HC |
| 24.000 FPS | Film | VLC, Plex, Kodi, MPC-HC |
| 25.000 FPS | PAL / European Broadcast | VLC, Plex, Kodi, MPC-HC |
Match the source and target rates
A constant delay works when the video and subtitle track already use the same timing scale. When a 23.976 FPS BluRay or NTSC source is released at 25.000 FPS PAL speed, the difference accumulates: an early subtitle can look correct at the beginning and become increasingly late or early near the end. Apply a framerate multiplier for that progressive drift, then check dialogue near the beginning, middle, and final scene.
The 24.000 FPS Film standard is common for cinema-originated material. It is close to 23.976 FPS, but the small rate difference still matters over a long feature. Keep the original SRT as a backup, identify the video release you are actually watching, and use the matching source and target values before exporting a corrected track.
Use the corrected SRT in your player
The downloaded file remains a standard SRT subtitle, so it can be loaded in VLC, Plex, Kodi, or MPC-HC without a proprietary conversion. VLC is useful for testing a delay quickly. Plex and Kodi can pair an external SRT with a library item, while MPC-HC can load the file alongside local video. Name the subtitle to match the video when your player uses automatic discovery.
If the first and last scenes are aligned but the middle drifts, revisit the framerate ratio rather than adding another constant offset. If every scene is shifted by the same amount, use the time shift control. Testing multiple reference points separates these two problems and prevents a correct subtitle from being over-adjusted.