How to validate SRT and WebVTT subtitle files
When an SRT or WebVTT file is ready for quality-control review, open Subtitle Quality Checker. The checker supports a selectable QC profile or custom thresholds, then reports issues in timing, reading speed, layout, tags, whitespace, and optional spelling checks.
What Subtitle Quality Checker checks
Subtitle Quality Checker reviews an SRT or WebVTT file against quality-control rules. Its reported issues cover timing, reading speed, layout, tags, and whitespace. Optional spelling checks extend the review to the subtitle text.
Choose profile-based or custom checks
A selectable QC profile applies a defined set of checks to the subtitle file. Custom thresholds let a project use its own quality-control values instead of relying on a profile. Either choice covers timing, reading speed, layout, tags, and whitespace. The review categories stay the same for both choices, while custom thresholds change the project values used for the review.
Typical subtitle validation jobs
- Review an SRT file's timing and reading-speed issues before sending it back for approval.
- Check layout and tags in a WebVTT file after captions have been edited.
- Use custom thresholds when a project's QC requirements do not match a profile.
- Add optional spelling checks after timing is complete and the subtitle wording still needs review.
Use Subtitle Tools for other subtitle work
Subtitle Tools covers tasks outside validation, including converting, retiming, styling, merging, and splitting SRT and WebVTT subtitle files. Return to Subtitle Validate Tools when the file needs quality-control review and you want to inspect the reported issues.
Frequently asked questions
How do I validate an SRT file?
Open Subtitle Quality Checker and review the SRT file against a selectable QC profile or custom thresholds. The review covers timing, reading speed, layout, tags, whitespace, and optional spelling checks.
Can I validate WebVTT subtitles?
Yes. Subtitle Quality Checker validates WebVTT subtitle files as well as SRT files. Use the reported issues to review timing, reading speed, layout, tags, or whitespace.
Can I use custom thresholds for subtitle QC?
Yes. The checker supports custom thresholds alongside selectable QC profiles. Use custom thresholds when the subtitle project has its own quality-control requirements.
What does Subtitle Quality Checker review?
It reviews timing, reading speed, layout, tags, and whitespace, with optional spelling checks for the subtitle text. The checks apply to SRT and WebVTT subtitle files.