As you go through the internet you may notice that many sites have funny 3-4 letter combinations at the end of a page name. I'm not talking about .com, .net, or .org. I'm talking about .html, .php, .gif, .jpg, etc.
In this lesson you will learn about the importance of file extensions and what many common ones mean.
Some common file extensions:
| File extension: | Use: | What it is: |
|---|
| .jpg | Images | Picture File |
| .gif | Images | Picture File |
| .png | Images | Picture File |
| .html | HTML Documents | Web page |
| .htm | HTML Documents | Web page |
| .dhtml | Dynamic HTML Documents | Dynamic Web page |
| .txt | Plain text documents | Text |
| .rtf | Rich Text documents | Text with line breaks, colors, fonts, etc. |
| .doc | Microsoft Word Documents | Word Documents |
| .php | PHP Documents | Dynamic Scripting language used to create dynamic content on the internet. (most large sites use it) |
| .zip | Compression | Used to compress files down to a smaller size |
| .sit | Compression | Used to compress files down to a smaller size |
| .mp3 | Music | A common way to compress music |
| .mpeg | Video | A common compression for video |
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