File Extensions on the Internet

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I had a simple question to which I couldn’t find an answer.

Which file extensions are used on the internet?

So I wrote a little program (webExtension.py) and a half million calls to Google later, we have some interesting data.

First, the raw data:

Top 10:

html

6 700 000 000

php

5 980 000 000

htm

1 690 000 000

asp

1 510 000 000

aspx

1 380 000 000

jsp

565 000 000

cfm

385 000 000

pdf

298 000 000

do

242 000 000

cgi

199 000 000

Some interesting facts I saw :

  • There are 1305 unused 3 letter extensions out of the possible 17,576. That is 92.5% are already used for something. (There IS a lot of junk thought, so don’t be TOO alarmed).
  • There are a lot of common extensions that I have NO idea what they are for. .e? .nhn?
  • 4x more pages are html instead of just htm.
  • PHP is beating ASP by about 2x.
  • Many servers serve HTML from image extensions, and jpg > png == gif > svg > jpeg > bmp > tiff
  • Naming is mostly not biased by first letter. The empty part is 3 letter extensions starting with y.

  • Only the top 5,000 extensions have more than 1000 pages.

Some caveats

  • This was done in October 2009, things might change. I’ll rerun it if people leave comments.
  • I only looked for extensions up to 4 letters. No numbers or funky symbols.
  • I am assuming the counts on Google’s search results are ACTUALLY correct.

If anyone makes any interesting observations with this data, please let me know and I’ll post it here. Pretty graphs are welcome as well 🙂

List of Guilded WoW players

I needed a list of as many World of Warcraft players as I could find. Sadly, blizzard wasn’t giving this out on wowarmory and neither were any other sites I could find. Thankfully, I’m good at web scraping.

So, I went through each region, server, guild, and character on wowjustsu and pulled out 1.75 Million characters.

World of warcraft claims over 10 Million players, wowjutsu claims 4 Million users but I could only find 1.75 Million. Maybe the rest are unguilded or their guilds aren’t listed. Either way, 1.75 Million is good enough for me, hopefully it helps you out.