User Agents

Mozilla/5.0 (Windows; rv:49.0) Gecko/20100101 Firefox/49.0

This user agent string belongs to thumbnail.ws Bot, which is a library used to perform HTTP requests (more often, in the automatic mode as a web crawler or bot).

Browser
Name thumbnail.ws Bot
Developer thumbnail.ws
Type Bot/Crawler
Capabilities
ActiveX Controls No
Background Sounds No
Cookies No
Frames No
Iframes No
Java Applets No
JavaScript No
Tables No
VBScript No
Properties
RSS Reader No
Fake No
Crawler Yes
Anonymized No
Mobile No
Tablet No
Modified No
Beta Version No
Alpha Version No
CSS Support
CSS 1 No
CSS 2 No
CSS 3 No
CSS 4 No