Regex Tester & Validator
Test, validate and match regular expressions
Test, validate and match regular expressions
Matches a period followed by whitespace and an uppercase letter (Latin A-Z or Cyrillic А-Я), then captures the remaining text. Useful for detecting the start of a new sentence after a period in both English and Russian text. The capture group grabs everything after the first capital letter, making it handy for sentence extraction and text segmentation tasks.