Unicode filename collision checker
Open Unicode filename collision checker on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.
Tool capabilities
{
"id": "unicode-filename-collision-checker",
"category": "developer-tools",
"built": true,
"requirements": "Up to 2,000 files. Uses Unicode 17 default full case folding and browser NFC/NFD normalization. Locale-specific Turkish mappings are not applied. Potential equivalence is not proof of a collision on every operating system.",
"implementation": {
"fields": [
{
"key": "mode",
"label": "Comparison rules",
"value": "NFC + Unicode full case fold",
"type": "select",
"values": [
"NFC + Unicode full case fold",
"NFD + Unicode full case fold",
"NFC only",
"NFD only"
]
}
],
"files": true,
"input": false,
"directory": true,
"multiple": true,
"deferImagePreview": true,
"presentation": "metrics",
"metadataOnly": true,
"maxFileBytes": 9007199254740991,
"uploadHelp": "Choose one folder, up to 2,000 files. File contents are not read.",
"note": "Inspect names, relative paths and file sizes locally. No file contents are read. Empty folders and inaccessible entries are not exposed by the browser folder picker.",
"experience": {
"automatic": false,
"single": false,
"inputMaxLength": 1000000,
"inputMode": "text",
"label": "Your text",
"placeholder": "Type or paste your input…",
"help": "Up to 1,000,000 characters. Review the settings before running.",
"helpParts": [
"Up to 1,000,000 characters.",
"Review the settings before running."
],
"action": null
},
"mode": "explicit",
"interactive": false
},
"execution": "Browser interface",
"api": null,
"browser_agent": {
"supported": true,
"name": "run_current_tool",
"discovery": "WebMCP on the human page in a supporting browser",
"verification": "See audit/API-AUDIT.md; availability is not verification"
}
}Page guide
Find filenames and directories that become equivalent after Unicode normalization or case folding.
How to use Unicode filename collision checker
- Choose the folder you want to inspect.
- Review the options and run the check.
- Read the result and download the report.
Useful next steps
Choose one local folder
Use the folder picker and confirm the files you want to inspect. Nested paths are preserved. Choosing another folder replaces the selection.
Review the result
Find filenames and directories that become equivalent after Unicode normalization or case folding.
Download your report
Save the report or manifest to keep the results. Your source files are unchanged, and the processing stays in your browser.