PHILADELPHIA — DC Comics is expanding its digital storefront, putting all its monthly titles — from Batman to Superman — on sale at iTunes, Amazon’s Kindle store, and Barnes & Noble’s Nook shop.
The move announced Wednesday appears to make DC Entertainment the first major comics publisher to make its titles available through online stores the same day they’re on sale in comic shops. It also expands its digital offerings beyond the top industry digital purveyor, Comixology.
Hank Kanalz, DC Entertainment senior vice president for digital, said the decision shows the importance of digital downloads to the company, which relaunched its universe last year under the so-called New 52 banner.
‘‘We’ve proven over the last two years that going digital has added to our business in general and going wider is the way to go,’’ he said.
The decision to go with devices by Apple Inc., Amazon.com Inc., and Barnes & Noble Inc. reflected the fact that users of those gadgets have extensive libraries of digital files — movies, books, TV shows, and, now, comics — and don’t necessarily tend to jump from one device to another.
‘‘If you devoted your library to being collected in your Kindle, now you have the option to add to your comics to that,’’ Kanalz said.
‘‘You’re going to have to commit to what platform you want to build your library in.’’
It also offers would-be readers the chance to buy single issues quickly.
For DC and others, the proliferation of tablets — iPads, Kindles, and Nooks — means more opportunities to lure new readers, said DC copublisher and artist Jim Lee.
Besides Comixology, DC also sells its titles through its own DC and Vertigo apps.