Processing boundary
Input is processed only in the active browser tab's memory and is not sent to a ByteQuant server.
110
Text & NLP
SRT Subtitle Time Shifter
Validates SRT timing lines, applies a signed second offset to starts and ends, clamps below zero, and preserves text lines. It does not automatically solve frame-rate drift.
✓ Free✓ No account✓ In-browser
Persistent storage
Input and output are not stored. The optional usage counter keeps only tool identity and count, never content.
Verification
Output comes from disclosed rules or browser APIs and needs independent review before high-impact use.
A result in three steps
- 01
Enter offset seconds and SRT text in the JSON sample.
- 02
Transform the timecodes.
- 03
Verify sync visually at the start, middle, and end of the video.
When is this tool useful?
- ✓ Subtitle sync correction
- ✓ Trailer timing shifts
- ✓ SRT quality checks
Important limitation
Automated output is a preliminary assessment. Do not use it alone for legal, financial, medical, or security-critical decisions.
LEARN THE WORKFLOW
Guides for this tool
Text Integrity Across Unicode, Subtitles, and Morse Conversion
Transform text without corruption by understanding grapheme, code-point, UTF-8 byte, and timecode boundaries.
Read guide →ABOUT THIS TOOL
Frequently asked questions
Does this tool send input to a server?+
No. Processing runs in this browser tab. Data leaves the page only when you choose to copy or download the result.
Is the result definitive?+
The tool produces consistent output from disclosed rules and browser APIs, but context, data quality, and method limitations can affect it. Verify high-impact decisions.
Is input saved?+
No. Tool input is not persisted. With consent, only tool identity and usage count may be kept on this device for personal shortcuts.