Included in the scan report
- 60 invisible Unicode code points, including zero-width spaces and BOM
- U+202F narrow no-break spaces commonly copied from ChatGPT
- Raw Markdown symbols, asterisks, and code fences left on the clipboard
Paste Residue Detector and Counter
Scan copied text for leftover Unicode artifacts and broken layout marks before exporting. See itemized residue counts, not a probability score.
0 characters · 0 words
Clean paste fromClaudeChatGPTGeminiDocsCMSEmail
What our residue detector reports — and what it cannot see
The report provides a deterministic character inventory, not a probabilistic AI score. Use it to verify text hygiene before publishing.
Outside the scope of this scan
- No probabilistic AI detection score or percentage
- Cannot detect Claude's official statistical sampling mark or SynthID
- Does not certify text for third-party automated writing checkers
See the difference
Residue Detector in Action
See an exact inventory of paste residue discovered in a raw text snippet.
Raw AI Paste4 hidden characters · Markdown tags
Here’s the summary: **Section 1** - Item A with narrow space > Note: verify carefully
Cleaned TextPristine plain text ready for docs
Here's the summary: Section 1 • Item A with narrow space Note: verify carefully
Why Clean Paste Matters
What the Residue Detector Scans vs. What Is Outside Scope
Scan copied text for leftover Unicode artifacts and broken layout marks before exporting. See itemized residue counts, not a probability score.
1. Physical Residue (In Scope)
60+ invisible Unicode code points, U+202F narrow spaces, and markdown tags. Scanned locally for free.
2. Statistical Marks (Outside Scope)
Claude official statistical sampling marks and SynthID media watermarks cannot be detected by character scans.
100% Local In-Browser Execution
Our invisible character and markdown cleaners run directly inside your browser. No private text is ever uploaded for free cleaning.
How It Works
How to Detect and Clean Paste Residue in 3 Steps
- 01
Step 1: Paste Text for Residue Inspection
Paste your draft to immediately scan against 60+ known invisible code points.
- 02
Step 2: Review Itemized Residue Report
See a clear breakdown of every zero-width space, non-breaking space, or markdown tag found.
- 03
Step 3: Strip Residue or Rephrase
Click Clean to remove all residue instantly, or use Pro credits for semantic rewriting.
Features
Detector Features
Invisible Character Detection
FreeScan and strip 60+ non-printing Unicode code points, joiners, and ghost spaces locally in your browser.
Markdown Stripper
FreeFlatten raw headings, bold asterisks, blockquotes, and code fences into clean plain text for publishing.
Text Watermark Remover
ProReconstruct draft phrasing using Pro semantic rewriting when watermarks are embedded directly in word choice.
AI Humanizer
ProRefine stiff transition formulas and mechanical sentence pacing into organic, reader-friendly prose.
Definition
Paste Residue Detector: Exact Inventory, Not Probability Guesses
01
When copy-pasting from AI web apps, legacy PDFs, or rich-text platforms, the clipboard frequently captures digital residue: non-printing control codes, zero-width spaces, and unrendered markdown tags.
02
Clean Paste AI's Paste Residue Detector catalogs exact code points found in your text. Unlike probabilistic AI detectors that produce fluctuating percentage scores, our tool gives you an objective inventory of physical characters.
03
All scanning runs 100% locally in your browser memory for complete data privacy.
04
Clean all flagged residue with one click, or use Pro rewrite if your draft needs sentence-level reconstruction.
Technical Sources
How the Three AI Output Traces Differ
Invisible Unicode artifacts, Markdown residue, and official statistical watermarks are three distinct mechanisms with different solutions.
| Mechanism | Technical Description | How Clean Paste AI Handles It |
|---|---|---|
| Invisible Unicode Artifacts | Zero-width spaces (U+200B), narrow no-break spaces (U+202F), and format code points copied from web UIs. | Free local in-browser scan and deletion. Visible words remain unchanged. |
| Markdown & Formatting Noise | Heading hashes, bold asterisks, code fences, and bracketed links. | Free local in-browser stripping to clean plain text. |
| Statistical Sampling Watermarks | Mathematical bias in token selection probability during model generation (e.g., Claude's official watermark). | Pro semantic sentence reconstruction. Rebuilds phrasing while keeping meaning intact. |
“Nothing is added to the text and there are no hidden characters.”
“U+200B ZERO WIDTH SPACE is intended for line break control without displaying a visible space.”
Markdown syntax adheres to the CommonMark specification: CommonMark Specification.
Use Cases
Where Residue Detection Matters
01
Itemized Residue Breakdown
View an exact count and breakdown of hidden Unicode characters and formatting tags instead of vague probability scores.
Open the tool →
02
Client Copy Hygiene Reports
Show clients proof that their copy is free of digital paste residue and ready for publication.
Open the tool →
03
Editorial Acceptance Checks
Verify that freelance submissions have been cleaned of chat interface artifacts and unrendered markdown.
Open the tool →
04
Engineering Paste QA
Inspect clipboard text before inserting into sensitive production environments and database queries.
Open the tool →Testimonials
What writers and editors say
“Pasting from AI into Google Docs used to create weird font glitches. Clean Paste AI strips the zero-width spaces in one click before I paste.”
Publishing Editor
Digital Media
“The Markdown stripper is essential for our knowledge base. It turns chatty markdown output into pristine plain text without file uploads.”
Technical Writer
SaaS Documentation
“I love that the Unicode cleaner runs locally in my browser. Confidential client drafts stay private, and the Pro rewrite helps when cadence is stiff.”
Copywriter
Content Agency
Tools
Platform-Specific Cleaning Guides
Explore dedicated walkthroughs for cleaning output from specific AI platforms.
Clean Paste Utility for AI Copy
Fix messy clipboard output by stripping zero-width artifacts, broken tags, and odd line breaks instantly in your browser.
Clean Paste →Paste Clean Workflow for Clean Text
Eliminate unwanted zero-width characters and odd clipboard formatting before sharing documents. Review full residue counts to maintain spotless text.
Paste Clean →Clean Text Tool for Pure AI Output
Remove hidden Unicode artifacts and awkward markup before pasting into email or office editors. Get spotless paragraphs with detailed character counts.
Clean Text →Pricing
Free Local Inspection & Pro Rewrite Credits
Scanning and cleaning paste residue is always 100% free locally in your browser.
View Pricing PlansClear Scope Boundaries
This tool is a character-level inspection utility. It does not calculate probabilistic AI detection scores or certify text for third-party checkers.
FAQ
Paste Residue Detector and Counter Frequently Asked Questions
How does the Paste Residue Detector work?+
It scans your text locally against a database of 60+ known invisible Unicode characters, control codes, and formatting artifacts, providing an itemized breakdown.
Does this tool calculate an AI detection score or percentage?+
No. This tool detects inspectable Unicode characters and formatting residue. It is not an AI classifier and does not assign probability percentages.
Is my inspected text kept private?+
Yes. All detection logic executes locally within your browser. Your draft is neither uploaded nor logged on our servers.
Can this tool detect Claude's official statistical watermark?+
No. Claude's official watermark is a statistical bias in word choice created during generation using Anthropic's private key; it contains no hidden characters and cannot be detected by character scanners.
What should I do if the detector finds hidden characters?+
You can strip them immediately with our free one-click cleaner. If you also need to address repetitive phrasing, you can use Pro rewrite to regenerate the wording.
How many words can I inspect for free?+
Free in-browser residue inspection is unlimited with no word caps and no registration required.
About
Focused text hygiene for the AI era
Clean all flagged residue with one click, or use Pro rewrite if your draft needs sentence-level reconstruction.
Detect Paste Residue Now
Scan copied text for leftover Unicode artifacts and broken layout marks before exporting. See itemized residue counts, not a probability score.