While there has been major problems with charting financial instruments on web pages due to the large effort you need to put building a database with historical data, and maintaining it up to date. Also the charting itself is often buggy or incompatible with all clients browsers because it uses some external plugins that clients may not have installed/or do not wish to install on their systems.
These days are now over! You can easily provide fully compatible, fast, and easy to use charts for most of the financial instruments by performing simple "paste a piece of HTML code" on your website like you do when you want to put a counter or ads on it. Our server takes care of everything else like historical data, interactive chart update etc.