Regex Tester
Free online regex tester for subtitle files. Test and debug regular expressions on subtitle text with real-time matching preview.
Drop your subtitle file here
or browse files
Supports SRT, VTT, ASS, SUB, TXT, JSON
How to Use Regex Tester
Paste your subtitle text, enter a regex pattern, and see matches highlighted in real-time.
Common Use Cases
About Regex Tester
Free online regex tester for subtitle files. Test and debug regular expressions on subtitle text with real-time matching preview.. Our Regex Tester tool provides a fast, reliable, and completely free solution that works entirely in your browser. No server uploads, no registration, and no usage limits.
Whether you are a professional video editor, a content creator, or someone who needs to work with subtitles occasionally, our tool is designed to be intuitive and efficient. The processing happens instantly, and you can see the results in real-time.
Why Choose Our Regex Tester Tool?
- 100% free with no hidden charges or premium tiers for basic features
- Privacy-first: all processing happens in your browser
- No registration or account required
- Support for all major subtitle formats
- Instant processing with real-time preview
- Clean, professional interface designed for productivity