Themes are the backbone of personalization in the tumblr. Tumblr themes are essentially HTML based themes which we can edit quite easily. We have found that there are many serious tumbler bloggers out there and some of the blogs look fantastic. Tumblr themes can be easily customized for whatever your need. That might be the reason behind its immense success.
Elise
Queis Theme
Elise
Copycat
Eclipse
Sugar
Queis Theme
Maximize
Maverick
Azelya Side
Fixed
ImNotWordy
Castle
