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Advertise With Reactor

Advertise with Reactor

About Us

Reactor, a magazine site for science fiction, fantasy, and all the things that interest SF and fantasy readers, presents original short fiction, new art, excerpts from new books, and commentary on science fiction and related subjects by a wide range of writers from all corners of the science fiction and fantasy field; both professionals working in the genres and fans. Its aim is to provoke, encourage, and enable interesting and rewarding conversations with and between its readers.

Why You Should Advertise With Us

Reactor boasts contributors and content from many different SF/F book publishers, as well as fans from all corners of genre fandom. And we've lasted over 15 years as a content vertical within a volatile internet.

  • 500K+ Users Monthly
  • 3 million Page Views Monthly
  • Time on Site, Avg.: 2:00+
  • 60/40 split in new/returning users


Subpages Sidebar Block, non-rotating, 300 x 600 and/or 300 x 250, exclusive:

1 Week$1,500
2 Weeks$2,70010% off
3 Weeks$4,00012% off
4 Weeks$5,10015% off

Subpages Sidebar Block & Header Strip, 728 x 90 and/or 320 x 50, equal rotation for one slot in field of four ads:

1 Week$500


  • Header Strip (desktop and tablet): 728×90 pixels
  • Header Strip (mobile): 320×50 pixels
  • Sidebar Block: 300x600, 300×250 pixels


We accept GIF and JPEG formats and file sizes below 100K. We reserve the right to change our advertising rates without notice, but will honor ads already paid for at an earlier price. At this time, we are only accepting advertising that is specifically tailored to the publishing community. We reserve the right to refuse any advertisement featuring material that we feel is inappropriate, outside of our guidelines, or does not meet our review standards. Ads on the site should not be considered an endorsement on the part of Reactor or Macmillan Publishing.

For more information about advertising on Reactor, please send an email to [email protected].