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Using Web Templates for Web Design: Tips and Best Practices:File Naming
Attention to file name hygiene can facilitate portability and compatibility between different systems. Concise naming also assists maintenance and makes for logical and easy to read URLs.
Do not drop file extensions.
Standards
Do not use spaces or special characters (other than underscores) in file names.
Do not use excessively long (more than 20 characters) or excessively short names.
File names should begin with a letter.
File names should accurately indicate file content.
URLs may be case sensitive, and so case should be preserved.
Recommendations
Follow the 8.3 rule (8 characters to name the file, a period, and 3 characters to identify the file type)
(*.htm is preferred or use *.html, but be consistent)
.
Use all lowercase.
Underscores should be used sparingly since they can be hard to read in URLs.
Avoid unprofessional sounding names.