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JianFan.app

TEXT CLEANUP · HIDDEN CHARACTER SCAN · LOCAL PROCESSING

Online Text Formatter

Clean text copied from PDF, PowerPoint, CAJ files or web pages. Fix unwanted spaces and line breaks, then detect removable Unicode-based AI text watermarks without uploading your text.

FORMAT / SCAN / CLEAN

Paste text, choose rules, and format

Waiting for text
Text formatting
AI watermark and Unicode cleanup
High-risk Unicode cleanup

These characters can be required for emoji, Arabic, Indic scripts, bidirectional text or glyph variants. Enable them only when you know they are unwanted markers.

Original text

0 / 3,000,000

Formatted result

0

Formatting and detection run in this browser. The tool removes detectable Unicode artifacts; it cannot identify an author or detect and erase statistical AI watermarks.

Before and after comparison

RemovedAddedU+200BHidden character

After formatting, every removed, replaced and added character is marked here. Hidden characters appear as U+ code points.

    Input characters
    Output characters
    Suspicious before0
    Suspicious after0

    Unicode scan details

    UNICODE

    No zero-width characters, special spaces, variation selectors or lookalike characters detected yet.

      CLEAN COPIED PDF TEXT AND HIDDEN UNICODE

      A text cleaner for documents, layout fixes and AI watermark checks

      This online text formatter does more than remove spaces and line breaks. It protects URLs, decimals and common English text while grouping invisible Unicode characters by risk before you clean them.

      Repair copied PDF line breaks

      Join hard-wrapped lines inside each paragraph with language-aware spacing, and optionally repair English words split by a line-ending hyphen.

      Protect URLs and decimals

      Punctuation and spacing rules skip web addresses, email addresses, inline code and decimal numbers instead of corrupting them.

      Remove AI text watermarks by risk

      High-confidence zero-width markers are removed by default. Joiners, variation selectors and mixed-script lookalikes remain opt-in.

      How to format and clean text online

      1. Paste text or import a TXT, MD, CSV or JSON file.
      2. Choose line break, spacing, punctuation and Unicode cleanup rules.
      3. Select Format text, then review the before-and-after comparison, character counts and Unicode scan.
      4. Copy or download the result, or return it to the input for another pass.

      Text formatting and AI watermark questions

      What is an AI text watermark?

      On this page, it means detectable Unicode artifacts such as zero-width characters, special spaces, variation selectors and mixed-script lookalikes. Statistical token-choice watermarks are different.

      Why are U+200C, U+200D and variation selectors not removed by default?

      They can be required for emoji, Arabic, Indic scripts and glyph variants. Removing them automatically can damage legitimate text, so they are high-risk options.

      Can it clean line breaks from copied PDF text?

      Yes. Join wrapped lines preserves paragraphs separated by blank lines and reconnects CJK or Latin line endings with suitable spacing.

      How can I see what the formatter removed or changed?

      The before-and-after comparison below the result strikes through removed characters in red and highlights added ones in green. Invisible characters such as zero-width and special spaces are shown as U+ code points, with a change count per rule.

      Is my text uploaded?

      No. Text formatting, invisible character detection and Unicode AI watermark removal all run locally in your browser with JavaScript.

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