Invisible Text Detector & Cleaner
Inspect, identify, and remove invisible Unicode characters without uploading your text.
If you see squares or question marks, try a different character from the library.
An invisible text detector and cleaner lets you inspect zero-width characters such as ZWSP, Hangul Filler, Braille Blank, and direction marks before you reuse pasted copy. It lists the exact Unicode code points, shows where they occur, and removes only the character types you select in your browser.
Detects zero-width, spacing, filler, format-control, and replacement Unicode code points that appear blank or behave unexpectedly.
Lists each detected character with its code point, count, and code-point positions.
Removes only selected invisible character types so visible text and ordinary spaces stay intact.
Highlights replacement glyphs (�) whenever a platform strips or rewrites your payload so you can react early.
Stores the latest test history locally so regression checks stay fast without sending data to any server.
Paste or type your string
Copy any blank text snippet, long-press on mobile, or press Ctrl/Cmd + V to drop it into the tester; the character count updates in real time.
Review the detected code points
Review character names, Unicode values, counts, and positions. Replacement symbols warn that a platform may have rewritten the payload.
Clean only what you selected
Choose the invisible character types to remove, then clean and copy the result. Unselected characters and visible text remain unchanged.
Review saved scenarios
Scroll through the recent tests list to reuse past payloads, compare character counts, and clear the log whenever you start a new experiment.
AI and CMS Text Cleanup
Inspect text copied from AI tools, documents, or content management systems before publishing. Detect hidden formatting characters that can affect search, editing, or display.
Paste a draft with an unexpected line break, identify the code point, then remove only that character type.
Real-time Analyzer
The character counter and status messaging update instantly while you type or paste, so you notice sanitizer issues immediately.
Replacement Alerts
Visual warnings and badges highlight when hidden text has been altered, reducing the risk of failed submissions.
Selected Cleanup and Copy
Remove only the character types you choose, then copy the reviewed result without changing visible text or ordinary spaces.
Local History Log
The last ten tests stay on your device, letting you revisit previous payloads without rebuilding them from scratch.
Privacy First
All analysis happens in the browser, so no invisible text ever leaves your machine.
Unicode Review Workflow
Pair the detector with the character library when you need to document a Unicode code point or create a controlled QA test case.
💡Retest After App Updates
Editors and applications can change how they normalize Unicode. Recheck important text after major app or browser updates.
💡Review Before Removing
Check the character name, code point, and positions before removing it. Direction marks and joiners can have legitimate language or emoji uses.
💡Log Test Notes
Copy the status text into your QA ticket or screenshot the analyzer output so teammates know which Unicode points were used.
💡Pair With Device Testing
Rendering can differ between Android, iOS, and desktop clients. Validate legitimate formatting on the devices your audience uses most.
Why do I see the � symbol after testing?
The replacement glyph means that an editor, app, or transfer changed part of the text. Compare the reported code points with the original source and use visible text when the platform does not support the character.
Does this tool upload my text?
No. Detection and cleanup run in your browser. The optional local history is stored on your device and can be cleared at any time.
Can removing a character change how text looks?
Yes. Joiners and direction marks can affect emoji sequences and right-to-left scripts. Select only the character types you intend to remove and review the cleaned result before using it.
Can I use invisible characters for SEO?
No. Hiding keywords or content with invisible characters violates search-engine policies. Use this tool for legitimate cleanup, accessibility, formatting review, and controlled QA only.
Batch Invisible Text Generator
Generate controlled sample text for a Unicode QA scenario, then inspect its code points before use.
Invisible Character Library
Browse every supported blank character with Unicode, HTML, width, and usage notes before testing.
Bold Text Generator
Use visible text styling when clear, readable emphasis is the better choice.