SRT Validator & Fixer

What is an SRT file?

SRT (SubRip Subtitle) is the most common format for video subtitles. It contains sequential text blocks with start and end timestamps. When these timestamps overlap, are formatted incorrectly, or have empty lines, video players and editors may fail to display the subtitles correctly.

Common SRT errors this validator can detect

• Sequence Errors: Missing or out-of-order subtitle numbers.
• Timestamp Format: Invalid timecodes that don't match the 00:00:00,000 --> 00:00:00,000 format.
• Overlaps: Subtitles that start before the previous one ends, causing display issues.
• Negative Duration: Subtitles where the end time is before the start time.
• Empty Blocks: Subtitles without any text content.

How to fix subtitle timing problems

You can manually open your SRT file in a text editor (like Notepad or TextEdit) and fix the overlapping timestamps line by line. However, this is time-consuming for long files. Using our automatic SRT Fixer above, you can instantly repair overlaps, fix sequence issues, and remove empty subtitles. Simply drag and drop your file, click 'Fix Errors Automatically', and download the repaired version.