At WordCamp Canada 2025, Automattic CEO Matt Mullenweg called Tumblr his “biggest failure,” noting the challenge of maintaining the platform’s half-billion blogs while it remains unprofitable. Though plans to migrate Tumblr to WordPress infrastructure are on hold, Mullenweg said he hasn’t given up.
It’s been that for a while. Tumblr’s had it a while, between the earlier days of the user base, and the site not being the most well-coded thing compared to Twitter or Reddit.
It’s been that for a while. Tumblr’s had it a while, between the earlier days of the user base, and the site not being the most well-coded thing compared to Twitter or Reddit.