Long path checker
Open Long path 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": "long-path-checker",
"category": "developer-tools",
"built": true,
"requirements": "Up to 2,000 files. Windows values use UTF-16 code units, and POSIX values use UTF-8 bytes. Limits exclude a terminating NUL. The selected root is replaced by your destination base. Actual filesystem and application limits can differ.",
"implementation": {
"fields": [
{
"key": "platform",
"label": "Destination path rules",
"value": "Windows legacy",
"type": "select",
"values": [
"Windows legacy",
"Windows extended path",
"POSIX UTF-8",
"Custom UTF-16",
"Custom UTF-8"
]
},
{
"key": "base",
"label": "Destination folder",
"value": "C:\\Destination",
"type": "text"
},
{
"key": "limit",
"label": "Custom maximum path length",
"value": 259,
"type": "number",
"min": 1,
"max": 100000,
"showWhen": {
"platform": [
"Custom UTF-16",
"Custom UTF-8"
]
}
},
{
"key": "componentLimit",
"label": "Custom maximum name length",
"value": 255,
"type": "number",
"min": 1,
"max": 100000,
"showWhen": {
"platform": [
"Custom UTF-16",
"Custom UTF-8"
]
}
}
],
"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
Measure every selected path against a destination folder and common or custom length limits.
How to use Long path 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
Measure every selected path against a destination folder and common or custom length limits.
Download your report
Save the report or manifest to keep the results. Your source files are unchanged, and the processing stays in your browser.