Why this tool is useful
Use this filter to extract claims, questions, product mentions or recurring phrases from prose without manually scanning every sentence.
Text & List Tools · runs locally
Sentence Filter
Keep only sentences matching plain text or a bounded regular expression, with an explicit case-sensitivity option and preserved punctuation.
Ready. Your working data stays in this browser.
How it works
The browser separates visible sentence boundaries, compiles the chosen literal or regular-expression rule and returns only matches. Invalid expressions produce a readable error.
Practical example
Filter for private|local in regular-expression mode to keep sentences mentioning either word while excluding unrelated statements.
Validation
The calculation is deterministic and explains validation errors instead of silently changing invalid input.
Privacy boundary
Input and output remain in this tab. Copy and download happen through browser APIs without a server upload.
Result passport
Every run reports its tool mode, timestamp and input/output size so transformed data can be audited.