@slyroon: I want to share the best and highest quality of photos from tumblr but I'm having problems obtaining raw images. I understand that you have to replace 500 or 1280 to raw however this sometimes directs me to 404 error page. What did I do wrong?

@Atsushi: https://e621.net/wiki/show/howto:sites_and_sources#tumblr
There's also link to user script which will do this automatically for you.

Atsushi said:
@slyroon

You'll have to remove the the fist number and period. those ones before media.tumblr.com

Example
http://media.tumblr.com/9037444df7d28ca311e595b2f00c9301/tumblr_ogenpaxKhT1s0dx6zo7_raw.png