BERLIN — Tanit Koch, the first female editor in chief of Bild, Germany’s best-selling newspaper, said on Friday that she was resigning after an apparent power struggle with another executive at the publication.

Ms. Koch’s departure as top editor of Bild, a mass-market tabloid owned by Axel Springer, the German publishing giant, comes a little over two years after she took up the post. Bild, which is known for its heavily populist bent, flashy headlines and pictures of scantily clad women, has an average daily print readership of 1.46 million.

The move closes a chapter on a stunning rise for Ms. Koch, who went from being an unpaid trainee to the paper’s most senior editor in the space of a decade, and stands against efforts by German media groups to integrate women into senior newsroom and media roles.

At issue, German media reported, was a dispute between Ms. Koch, 40, and Julian Reichelt, who heads all Bild titles. Mr. Reichelt, a former war correspondent, was promoted to his current post, which is more senior than Ms. Koch’s, last winter, just over a year after Ms. Koch’s appointment. The two appeared to have clashed over the day-to-day management of the paper.