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# Wappalyzer [![Travis](https://travis-ci.org/aliasio/wappalyzer.svg?branch=master)](https://travis-ci.org/aliasio/wappalyzer/)
[Wappalyzer](https://www.wappalyzer.com) identifies technologies on websites, including content management systems, ecommerce platforms, JavaScript frameworks, analytics tools and [much more](https://www.wappalyzer.com/technologies).
* [wappalyzer on NPM](https://www.npmjs.com/package/wappalyzer)
* [wappalyzer-core on NPM](https://www.npmjs.com/package/wappalyzer-core)
* [Chrome extension](https://chrome.google.com/webstore/detail/wappalyzer/gppongmhjkpfnbhagpmjfkannfbllamg)
* [Firefox add-on](https://addons.mozilla.org/en-US/firefox/addon/wappalyzer/)
* [Edge extension](https://microsoftedge.microsoft.com/addons/detail/mnbndgmknlpdjdnjfmfcdjoegcckoikn)
* [Wappalyzer REST APIs](https://www.wappalyzer.com/api/)
## Prerequisites
- [Git](https://git-scm.com)
- [Node.js](https://nodejs.org) version 12 or higher
- [Yarn](https://yarnpkg.com)
## Quick start
```sh
git clone https://github.com/aliasio/wappalyzer
cd wappalyzer
yarn install
yarn run link
```
## Usage
### Command line
```sh
node src/drivers/npm/cli.js https://example.com
```
### Chrome extension
* Go go `about:extensions`
* Enable 'Developer mode'
* Click 'Load unpacked'
* Select `src/drivers/webextension`
### Firefox extension
* Go go `about:debugging#/runtime/this-firefox`
* Click 'Load Temporary Add-on'
* Select `src/drivers/webextension/manifest.json`
## Specification
A long list of [regular expressions](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions) is used to identify technologies on web pages. Wappalyzer inspects HTML code, as well as JavaScript variables, response headers and more.
Patterns (regular expressions) are kept in [`src/technologies.json`](https://github.com/aliasio/wappalyzer/blob/master/src/technologies.json). The following is an example of an application fingerprint.
#### Example
```json
"Example": {
"description": "A short description of the technology.",
"cats": [
"1"
],
"cookies": {
"cookie_name": "Example"
},
"dom": {
"#example-id": {
"attributes": {
"class": "example-class"
},
"properties": {
"example-property": ""
},
"content": "Example text content"
}
},
"dns": {
"MX": [
"example\\.com"
]
},
"js": {
"Example.method": ""
},
"excludes": "Example",
"headers": {
"X-Powered-By": "Example"
},
"html": "<link[^>]example\\.css",
"css": "\\.example-class",
"robots": "Disallow: /unique-path/",
"implies": "PHP\\;confidence:50",
"meta": {
"generator": "(?:Example|Another Example)"
},
"script": "example-([0-9.]+)\\.js\\;confidence:50\\;version:\\1",
"url": ".+\\.example\\.com",
"website": "https://example.com",
}
```
## JSON fields
Find the JSON schema at [`schema.json`](https://github.com/aliasio/wappalyzer/blob/master/schema.json).
### Required properties
<table>
<thead>
<tr>
<th>Field</th>
<th>Type</th>
<th>Description</th>
<th>Example</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>cats</code></td>
<td>Array</td>
<td>
One or more category IDs.
</td>
<td><code>[1, 6]</code></td>
</tr>
<tr>
<td><code>website</code></td>
<td>String</td>
<td>URL of the application's website.</td>
<td>
<code>"https://example.com"</code>
</td>
</tr>
</tbody>
</table>
### Optional properties
<table>
<thead>
<tr>
<th>Field</th>
<th>Type</th>
<th>Description</th>
<th>Example</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>description</code></td>
<td>String</td>
<td>
A short description of the technology in British English (max.
250 characters). Write in a neutral, factual tone; not like an
ad.
</td>
<td><code>"A short description."</code></td>
</tr>
<tr>
<td><code>icon</code></td>
<td>String</td>
<td>Application icon filename.</td>
<td><code>"WordPress.svg"</code></td>
</tr>
<tr>
<td><code>cpe</code></td>
<td>String</td>
<td>
The
<a href="https://cpe.mitre.org/about/" target="_blank">CPE</a>
is a structured naming scheme for applications, see the
<a href="https://cpe.mitre.org/specification/" target="_blank"
>specification</a
>.
</td>
<td><code>"cpe:/a:apache:http_server"</code></td>
</tr>
</tbody>
</table>
### Implies and excludes (optional)
<table>
<thead>
<tr>
<th>Field</th>
<th>Type</th>
<th>Description</th>
<th>Example</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>implies</code></td>
<td>String | Array</td>
<td>
The presence of one application can imply the presence of
another, e.g. WordpPress means PHP is also in use.
</td>
<td><code>"PHP"</code></td>
</tr>
<tr>
<td><code>excludes</code></td>
<td>String | Array</td>
<td>
Opposite of implies. The presence of one application can exclude
the presence of another.
</td>
<td><code>"Apache"</code></td>
</tr>
</tbody>
</table>
### Patterns (optional)
<table>
<thead>
<tr>
<th>Field</th>
<th>Type</th>
<th>Description</th>
<th>Example</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>cookies</code></td>
<td>Object</td>
<td>Cookies.</td>
<td><code>{ "cookie_name": "Cookie value" }</code></td>
</tr>
<tr>
<td><code>dom</code></td>
<td>Object</td>
<td>
Uses a
<a
href="https://developer.mozilla.org/en-US/docs/Web/API/Document/querySelectorAll"
target="_blank"
noopener
>query selector</a
>
to inspect element properties, attributes and text content.
</td>
<td>
<code
>{ "#example-id": { "property": { "example-prop": "" } }
}</code
>
</td>
</tr>
<tr>
<td><code>dns</code></td>
<td>Object</td>
<td>
DNS records: supports MX, TXT, SOA and NS (NPM driver only).
</td>
<td>
<code>{ "MX": "example\\.com" }</code>
</td>
</tr>
<tr>
<td><code>js</code></td>
<td>Object</td>
<td>
JavaScript properties (case sensitive). Avoid short property
names to prevent matching minified code.
</td>
<td><code>{ "jQuery.fn.jquery": "" }</code></td>
</tr>
<tr>
<td><code>headers</code></td>
<td>Object</td>
<td>HTTP response headers.</td>
<td><code>{ "X-Powered-By": "^WordPress$" }</code></td>
</tr>
<tr>
<td><code>html</code></td>
<td>String | Array</td>
<td>
HTML source code. Patterns must include an HTML opening tag to
avoid matching plain text. For performance reasons, avoid
<code>html</code> where possible and use
<code>dom</code> instead.
</td>
<td><code>"&lt;a [^&gt;]*href=\"index.html"</code></td>
</tr>
<tr>
<td><code>css</code></td>
<td>String | Array</td>
<td>
CSS rules. Unavailable when a website enforces a same-origin
policy. For performance reasons, only a portion of the available
CSS rules are used to find matches.
</td>
<td><code>"\\.example-class"</code></td>
</tr>
<tr>
<td><code>robots</code></td>
<td>String | Array</td>
<td>
Robots.txt contents.
</td>
<td><code>"Disallow: /unique-path/"</code></td>
</tr>
<tr>
<td><code>url</code></td>
<td>String</td>
<td>Full URL of the page.</td>
<td><code>"^https?//.+\\.wordpress\\.com"</code></td>
</tr>
<tr>
<td><code>meta</code></td>
<td>Object</td>
<td>HTML meta tags, e.g. generator.</td>
<td><code>{ "generator": "^WordPress$" }</code></td>
</tr>
<tr>
<td><code>scripts</code></td>
<td>String | Array</td>
<td>
URLs of JavaScript files included on the page.
</td>
<td><code>"jquery\\.js"</code></td>
</tr>
</tbody>
</table>
## Patterns
Patterns are essentially JavaScript regular expressions written as strings, but with some additions.
### Quirks and pitfalls
- Because of the string format, the escape character itself must be escaped when using special characters such as the dot (`\\.`). Double quotes must be escaped only once (`\"`). Slashes do not need to be escaped (`/`).
- Flags are not supported. Regular expressions are treated as case-insensitive.
- Capture groups (`()`) are used for version detection. In other cases, use non-capturing groups (`(?:)`).
- Use start and end of string anchors (`^` and `$`) where possible for optimal performance.
- Short or generic patterns can cause applications to be identified incorrectly. Try to find unique strings to match.
### Tags
Tags (a non-standard syntax) can be appended to patterns (and implies and excludes, separated by `\\;`) to store additional information.
<table>
<thead>
<tr>
<th>Tag</th>
<th>Description</th>
<th>Example</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>confidence</code></td>
<td>
Indicates a less reliable pattern that may cause false
positives. The aim is to achieve a combined confidence of 100%.
Defaults to 100% if not specified.
</td>
<td>
<code>"js": { "Mage": "\\;confidence:50" }</code>
</td>
</tr>
<tr>
<td><code>version</code></td>
<td>
Gets the version number from a pattern match using a special
syntax.
</td>
<td>
<code>"scripts": "jquery-([0-9.]+)\.js\\;version:\\1"</code>
</td>
</tr>
</tbody>
</table>
### Version syntax
Application version information can be obtained from a pattern using a capture group. A condition can be evaluated using the ternary operator (`?:`).
<table>
<thead>
<tr>
<th>Example</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>\\1</code></td>
<td>Returns the first match.</td>
</tr>
<tr>
<td><code>\\1?a:</code></td>
<td>
Returns a if the first match contains a value, nothing
otherwise.
</td>
</tr>
<tr>
<td><code>\\1?a:b</code></td>
<td>
Returns a if the first match contains a value, b otherwise.
</td>
</tr>
<tr>
<td><code>\\1?:b</code></td>
<td>
Returns nothing if the first match contains a value, b
otherwise.
</td>
</tr>
<tr>
<td><code>foo\\1</code></td>
<td>
Returns foo with the first match appended.
</td>
</tr>
</tbody>
</table>