Syed Waleed
Subtitle Time Shifter
Shift SRT or WebVTT cue timestamps forward or backward.
Enter your details, or load the example to try this tool.
Method and input rules
Shifts standard cue timestamp lines only; cue text remains unchanged. Supports SRT comma milliseconds and VTT dot milliseconds. A shift producing a negative start time is rejected rather than silently clipping it.
How to use
- Enter the values or content you want to process. Load example gives a complete starting point.
- Choose Run tool and review the result. Invalid input clears the result and displays an explanation.
- Copy or download the output. Document tools also provide a printable preview; use your browser’s Save as PDF option if needed.
Your inputs stay in this browser tab
This workspace processes your input on your device, without a processing-server request. It does not save your inputs or send a message. Favourites and recent history contain tool names only. Text inputs are limited to 100,000 characters and generated output to 1,000,000 characters.
Can I try the tool before entering my own data?
Yes. Choose Load example, then Run tool. Clear removes the workspace input and result; it does not change your saved favourites.
Does this check every real-world condition?
No. Read the method and limits above. A calculation uses the assumptions you enter; a conversion checks its supported structure; a document is a draft for you to review.
Related tools
Try a sample or see input tips
Start small, review the output, then use your own input. Sample files contain synthetic data.
Download sample SUBTITLE ↓For file tools, download the sample first, then select it with the tool’s upload control. Your own file is never replaced automatically.
Keep going with your next task
Download your result, then select that copy in the next tool. Files are not moved automatically.