Some HTML files might be displayed in garbage characters. This problem is typically due to the following reasons:
The charset encoding tag is incorrect.
The charset encoding tag is missing.
To find the charset encoding tag in the HTML file, perform the following actions:
Open the file with Mozilla.
Press Ctrl-i, or click View to open the View menu.
Click Page Info.
The charset information is in the bottom of the General tab, for example:
Content-Type text/html; charset=us-ascii
If the string charset=us-ascii does not match the actual encoding of the file, the file might appear broken. To edit the encodings of the HTML file, perform the following actions:
Open the file with Mozilla Composer.
Open the File menu.
Select Save as Charset.
Choose the correct encoding. Mozilla Composer automatically converts the encoding and the charset tag as appropriate.