How does it know where a sentence begins?

The tool looks for standard sentence-ending punctuation (periods, exclamation marks, question marks) followed by a space.

Will it lowercase the rest of the sentence?

No, it only targets the first letter, leaving acronyms or proper nouns later in the sentence intact.

Capitalize the first letter of each sentence in your text block automatically. Formatting raw, uncapitalized transcripts manually is slow.

Text is processed locally and not stored. Nothing is uploaded to any server.

Source Text Input

Result Output

1Paste your text into the input field.
2The tool will automatically capitalize the very first letter of every sentence.
3Copy the grammatically corrected text.