Removing line breaks and splitting paragraphs in copied text
Text copied from web pages, email, and chat apps comes with chaotic line breaks — triple blank lines for one paragraph, sentences sliced mid-way. Here is how to normalize it.
Where the mess comes from
- Email and comments: hard-wrapped fixed-width lines survive the copy.
- Web pages: visual paragraphs don't match real line breaks, and menu or ad fragments come along.
- Spreadsheets and notes apps: cells and cards spill out as bare lines.
Choosing how to split
The right unit depends on what you're doing next:
- Keep original paragraphs: preserve the blank-line structure as-is.
- Two sentences per paragraph: readable blocks for blogs and posts.
- One sentence per paragraph: for proofreading, translating, or working sentence by sentence.
One paste, done
The tool detects sentence boundaries in Korean, English, and Japanese using the browser's Intl.Segmenter. On paste it collapses duplicate spaces and stray formatting marks, then outputs the text in whichever split mode you pick. Lines that end without sentence punctuation — lists, notes — stay on their own lines instead of being folded into a paragraph.
Formatting marks and links
Markdown residue like ** or heading # marks is removed automatically. URLs and fenced code blocks are preserved untouched so nothing breaks.