We all know how important the resolution of website can be for a visitor and the webmaster, if the website theme is designed for specific resolution then you can evaluate on different screens using the tools I’ve mentioned below.
With the use of different browsers, you can find out whether your website design is compatible or not. So this way you can modify the template according to the requirement. And here are two simple tools to check website resolution, they are free and easy to use.
View Like Website Resolution

View like checks your website resolution in Wii browser, tests iPhone website compatibility and allows you to browse website, blogs on difference screen resolution that includes 800×600, 1024×768, 1151×864, 1280×800, 1400×900, 1600×120 and1920x1200.
Just enter your website url in viewlike to get started to find your website compatibility on various resolutions.
Browser Shots Website Resolution

To test website resolution on different browsers and on platform such as Linux, windows, Mac OS then browsershots is one excellent service you should look into.
You can check website compatibility with latest as well as with the older Firefox, Flock or Opera browser versions.
