SEO Tools

String Length Calculator
Counts the number of characters in a string. Useful for optimising your title and meta content.
Number Of Words
Calculates the number of words in a string.
Keyword Density Tool
Calculates overall keyword densities for a given web page.
Local Keyword Density Checker
Shows the percentage density of three keywords in a text area.
Rank Checker
Quickly Find out where you rank in Google, Bing and Yahoo.
Spider Simulator
Downloads a website and lets you see what a search engine sees.
Page Size Calculator
Enter your website’s URL and this tool will tell you how large the file size is.
Special Char Displayer
Shows a table of special HTML characters and gives web standard compliant encoding for each.
De-Worder
Convert characters from a document written in Microsoft Word to browser compatible text.
Code To Content
Shows the percentage of a page that is text.
Backlink Checker
Gets the number of Google backlinks for a site, and then compares it against a range of others.

From the blog