What is Invisible Character Detector?
When you copy-paste text, invisible Unicode characters — zero-width spaces, zero-width joiners, soft hyphens — can sneak in and cause coding errors, database query failures, or weird filename issues. Our detector scans for 30+ types of hidden characters, highlights exactly where they are, and lets you clean them all with one click. Essential for developers, data analysts, and anyone who works with plain text.
Use Cases
- ◆Debugging copy-paste coding errors
- ◆Troubleshooting database query issues
- ◆Cleaning filenames and paths
- ◆Text data preprocessing
- ◆Security audits (zero-width steganography detection)
How to Use
- 1Paste the text you want to scan
- 2See highlighted hidden characters and their positions
- 3Click "Clean" to remove all invisible characters
- 4Copy the clean text
Features
- ✓Detects 30+ hidden character types
- ✓Highlights exact positions
- ✓One-click cleaning
- ✓Real-time scanning
- ✓Browser-local processing
- ✓Free to use
- ✓No signup needed
- ✓Handles long texts
FAQ
Are invisible characters a security risk?
They can be used for steganography — hiding messages within visible text. Some malware also uses zero-width characters to bypass security filters.
Will cleaning remove visible text?
No. Only invisible control characters are removed. All visible letters, punctuation, and spaces remain untouched.
Is this tool free?
Yes — completely free. No accounts, no paywalls. Just open the page and go.
Does my data get sent to a server?
No. Everything runs in your browser. Your data never leaves your device.
Does it work on my phone?
Absolutely. Works great on phones, tablets, and desktops alike.
How fast is it?
Instant for most inputs. Large datasets might take a second or two.