Tumblr's blog themes vary widely, but most themes show the blog header above the post feed and in the blog's profile card on the dashboard. The header is the most consistent visual a Tumblr blog controls across themes, mobile views, and dashboard surfaces. Most Tumblr blogs set a header at signup, never touch it, and let the blog's visual identity drift behind the actual posting cadence.

SleekPixel renders the 3000x1055 header from a WordPress post. The post carries the current essay or season title, the brand color, and a wordmark. On save, the PNG lands in uploads. The blogger downloads the PNG and uploads it via Tumblr's appearance editor on the desktop site.

For Tumblr blogs that cross-post from a WordPress site (a common pattern for indie writers), the same source post drives the Tumblr header and the WordPress hero. The blog reads as the same project on both surfaces, and visitors arriving from a reblog see a Tumblr that matches the WordPress site that hosts the longer-form work.

Tumblr's discovery is largely reblog-driven, but follows happen on the blog itself after a visitor arrives via a reblog. The first impression on the blog is the header, and a header from signup year reads as a dormant project. A blog that updated its header recently reads as alive, regardless of how active the post feed has been in the last few weeks.

The follow signal is small per visitor but accumulates across a year of reblog-driven traffic, and the dividend shows up in follower growth that would not happen with a static header. SleekPixel makes the header refresh near-free. The WordPress source post drives the render, the PNG downloads from Gutenberg, and the blogger uploads via Tumblr's editor in under a minute.

Across a year, the blog reads as an active project to every visitor arriving from a reblog, and the follower base grows on the back of refreshed visual identity rather than just on the strength of the latest viral post.