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Text Cleaner (line breaks, spaces, duplicates, sort)

Remove line breaks, tidy spaces, drop duplicate lines, sort lines, convert full/half-width and straighten quotes in one click. Made for cleaning up copied text.

Your text stays in this browser and is never sent to the server. Every action can be undone one step at a time.

Lines

Remove line breaks

Remove duplicate lines

Sort lines

Numbering

Spaces & characters

Tidy spaces

Full / half width

Other cleanup

Deletes zero-width spaces and BOMs and turns non-breaking spaces into normal spaces. Use it when copied text misbehaves in search or comparisons.

Hide personal information

Finds and hides things shaped like phone numbers, emails, Korean resident numbers, cards, bank accounts, license plates and detailed addresses. Detection is not perfect — names, workplaces and schools have no fixed shape, so read the text once more before posting. Nothing is sent to a server.

Send this text to another tool

The text is not put in the address; it moves only inside this browser. Nothing is sent to a server.

FAQ

Text copied from a PDF is broken into short lines.

Choose "Keep paragraphs, join inside them" under Remove line breaks to keep paragraph breaks and only join the broken lines.

How is sorting ordered?

Dictionary order that reads numbers by value, so "file2" comes before "file10", and mixed scripts sort naturally.

Is my text stored?

No. Everything runs in your browser and nothing is sent anywhere.

How to use this tool

Use it when text copied from a PDF or web page has awkward line breaks or messy spaces. Remove line breaks, tidy spaces, delete duplicate lines, sort lines, convert full-width/half-width and unify quotes with one click each; undo steps back one action at a time. Your text stays in this browser.

Frequently asked questions

Can I remove line breaks from text copied from a PDF?

Yes. The remove-line-breaks button joins lines that were cut in the middle of a sentence.

Can I undo a wrong click?

Yes. Undo steps back one action at a time.

Is my text sent to a server?

No. Your text is used only in this browser.

See all tools

Typing Practice

Measure your typing speed with proverbs, short sentences and longer passages — keystrokes per minute for Korean, WPM for English — plus accuracy and the characters you got wrong. You can also practise on your own text, and nothing you type is sent to a server.

Text to Speech

Reads your text aloud. Choose the speed, pitch and volume; it plays sentence by sentence and highlights the one being read. Only voices installed on your device are used by default, so your text does not leave it.

Word cards

Paste a front/back word list and the Leitner box method adjusts when each card returns based on whether you knew it. Guests save only in this browser; logged-in members save to their account to continue on other devices and share.

Font preview

Upload a font file from your computer (TTF, OTF, WOFF, WOFF2) to see how text looks and how much Hangul it supports. The file never goes to a server.

Symbols & Fancy Text

Click-to-copy special characters and emoji, plus a converter that turns English text into styles like 𝐁𝐨𝐥𝐝 or 𝓢𝓬𝓻𝓲𝓹𝓽.

Hangul Fixer

Fix Korean text and file names made on a Mac that appear as separated jamo or garbled on Windows. Supports NFD↔NFC conversion, jamo joining/splitting, batch file-name conversion and encoding-mismatch recovery.