mhtml2html.js

mhtml2html converts MHTML files to a single HTML file using javascript.

Usage

mhtml2html is compatible with Node >= v4.3.2.

It has only been tested with MHTML files built and used with the latest versions of Chrome

Node.js

'use strict';

const mhtml2html = require('mhtml2html');

fs.readFile('input.mhtml', 'utf8', function (err, input) {
    if (err) {
        throw err;
    }

    // Returns the html document with embedded resources.
    const htmlDocument = mhtml2html.convert(input);

    // Output the html file.
    fs.writeFile('output.html', htmlDocument.documentElement.innerHTML, err => {
        if(err) {
            return console.log(err);
        }
    });
});

You can also use it from the command line by running:

mhtml2html <path_to_mhtml_file> <output_file_path>

Browser

Include the mhtml2html script under the dist folder:

<script type="text/javascript" src="mhtml2html-${VERSION}-min.js"></script>
<script>
    var reader = new FileReader();

    reader.addEventListener("loadend", function() {
        html = mhtml2html.parse(this.result);

        // Alternatively you could convert the result directly and have
        // it implicitly parsed i.e html = mhtml2html.convert(this.result);

        console.log(mhtml2html.convert(html));
    });

    reader.readAsText(mhtmlBlob);
</script>

API

noConflict

mhtml2html.noConflict();

Resets the module that was previously defined for browser conflict resolution.
Returns a localized version of mhtml2html.

parse

mhtml2html.parse(mhtml_string, html_only = false);

Accepts an MHTML String.
If html_only is true, returns the html document without resources. Otherwise it returns an MHTML parsed object:

{
    "index" : "<html-index-url>",
    "assets": {
        "<asset-url>" : {
            "data" : "<resource-string>",
            "id": "<frame-id>",
            "type": "<resource-type",
            "encoding": "<resource-encoding>"
        }
    }
}

convert

mhtml2html.convert(mhtml_string or mhtml_object);

Accepts an MHTML String or parsed MHTML Object.
Returns an html document element.

Development

To build and test mhtml2html:

If node_modules haven't been installed already, run npm install from the root directory.
Run ./node_modules/gulp/bin/gulp.js to build the scripts and run tests.

License

Released under the MIT License

uangsl/mhtml2html