What is claimed is:1. A method for generating a plurality of comparable visual maps of browsing activity of users, comprising:receiving a first set of parameters for generating a first visual map, wherein the first set of parameters includes at least a uniform resource locator (URL) of a webpage on which the browsing activity is monitored;retrieving, based on the selected first set of parameters, a first dataset including browsing within a page activity data;generating a first graphical visual map using the first dataset and content of the webpage;receiving a second set of parameters for generating a second graphical visual map, wherein the second set of parameters is comparable to the first set of parameters;retrieving, based on the selected second set of parameters, a second dataset including browsing within a page activity data;generating a second graphical visual map using the second dataset and the content of the webpage;scaling each of the first graphical visual map and the second graphical visual map to provide comparable visual representation of values of their respective data sets relative to each other; anddisplaying the scaled first graphical visual map and the scaled second graphical visual map in a display window such that each is visible simultaneously in the display window and each is displayed over a respective representation of the content of the webpage.2. The method of claim 1, wherein the first dataset and the second dataset are retrieved from a database in a secured manner.3. The method of claim 2, further comprising:generating a first token based on the first set of data parameters;generating a second token based on the second set of data parameters; andaccessing the database to retrieve the first data set and the second data set using the first token and the second token, respectively.4. The method of claim 1, wherein at least one of the first data set and the second data set contains a type of browsing within a page data that is not contained in the other data set.5. The method of claim 1, wherein each of the first graphical visual map and the second graphical visual map includes at least one visualization layer and at least one data layer rendered over the representation of the content of the web page and wherein the database is secured by limiting access of the at least one visualization layer to the database.6. The method of claim 1, wherein each of the first graphical visual map and the second graphical visual map includes at least one visualization layer and at least one data layer rendered over the representation of the content of the web page and wherein the at least one data layer of the first graphical visual map is restricted from access by the second graphical visual map.7. The method of claim 1, wherein the browsing within a page activity data includes at least one of: mouse movement, scrolling of the web page, resizing of a browser window, a click event, keyboard use, orientation change, touch start, touch move, and touch end, for the web page.8. The method of claim 1, wherein the scaling of the first graphical visual map and the second graphical visual map is proportional to a set of predefined values from the first dataset and from the second dataset.9. The method of claim 1, wherein each parameter of the first set of parameters and the second set of parameters includes any one of: a data range, a map type, and at least one filter parameter.10. The method of claim 9, wherein the at least one filter parameter is any of: a date, an event, demographics, technical information, a screen resolution, a traffic source, and a bounce rate.11. A non-transitory computer readable medium having stored thereon instructions for causing one or more processing units to execute the method according to claim 1.12. A system generating a plurality of comparable visual maps of users browsing activity, comprising:a processor; anda memory configured to the processor and configured to store instructions for causing the processor to:receive a first set of parameters for generating a first visual map, wherein the first set of parameters includes at least a uniform resource locator (URL) of a webpage on which the browsing activity is monitored;retrieve, based on the selected first set of parameters, a first dataset including browsing within a page activity data;generate a first visual map using the first dataset and content of the webpage;receive a second set of parameters for generating a second graphical visual map, wherein the second set of parameters is comparable to the first set of parameters;retrieve, based on the selected second set of parameters, a second dataset including browsing within a page activity data;generate a second graphical visual map using the second dataset and the content of the webpage;scale each of the first graphical visual map and the second graphical visual map to provide comparable visual representation of values of their respective data sets relative to each other; anddisplay the scaled first graphical visual map and the scaled second graphical visual map in a display window such that each is visible simultaneously in the display window and each is displayed over a respective representation of the content of the webpage.13. The system of claim 12, wherein the first dataset and the second dataset are retrieved from a database in a secured manner.14. The system of claim 12, wherein the system is further configured to:generate a first token based on the first set of data parameters;generate a second token based on the second set of data parameters; andaccess the database to retrieve the first data set and the second data set using the first token and the second token, respectively.15. The system of claim 12, wherein at least one of the first data set and the second data set contains a type of browsing within a page data that is not contained in the other data set.16. The system of claim 12, wherein each of the first graphical visual map and the second graphical visual map includes at least one visualization layer and at least one data layer rendered over the representation of the content of the web page and wherein the at least one data layer of the first graphical visual map is restricted from access by the second graphical visual map.17. The system of claim 12, wherein the browsing within a page activity data includes at least one of: mouse movement, scrolling of the web page, resizing of a browser window, a click event, keyboard use, orientation change, touch start, touch move, and touch end, for the web page.18. The system of claim 12, wherein the system is further configured to proportionally scale the first graphical visual map and the second graphical visual map based on a set of predefined values from the first dataset and the second dataset.19. The system of claim 12, wherein each parameter of the first set of parameters and the second set of parameters includes any one of: a data range, a map type, and at least one filter parameter.20. The system of claim 19, wherein the at least one filter parameter is at least one of: a date, an event, demographics, technical information, a screen resolution, traffic source, and a bounce rate.