BRANDY CASWELL, 28, turns to Facebook to keep up with her friends. But in the last year or so, she found that her newsfeed was being overrun with baby photos, documenting everything from nap times to diaper changes.


“I don’t need a play-by-play of a typical day with your kid,” said Ms. Caswell, an administrative assistant in Austin, Tex.


She won’t have that problem anymore, thanks to a new Web tool called Unbaby.me, which replaces the baby pictures on Facebook feeds with things that people prefer to see, like photos of cats, sunsets and bacon.


The tool seems to have struck a nerve. Introduced Aug. 1, Unbaby.me has been cited by Web sites like Slate and The Huffington Post. “If you are a childless 20- or 30-something whose friends are all popping babies like muffins,” read a Forbes article, “you don’t need me to tell you why this is a brilliant, and sanity-preserving, idea.”


Twitter users were effusive. “They fixed the internet,” wrote @KelseyFrazier. “Unbaby.me makes endless hours of looking at my facebook timeline nearly bearable,” wrote @lauryncharles.


Chris Baker, 29, a copywriter in Manhattan, said the idea arose from a conversation with his former co-workers Pete Marquis, 26, and Yvonne Cheng, 31, lamenting that their Facebook feeds were being hijacked by oversharing parents.


The three sketched out an idea for a Google Chrome extension, and spent almost two weeks developing it. “It’s like a certain part of the brain gets activated where they feel this crushing desire to share with the world their little creations,” Mr. Baker said. As of Wednesday, Unbaby.me had garnered nearly 300,000 views, and had been downloaded more than 19,000 times, he added.


Yet Unbaby.me is just the latest skirmish in the protracted rift between certain urban young adults, sometimes labeled “hipsters,” and their slightly older brethren, which some might call “hipster parents.”


In Park Slope, Brooklyn, child-free patrons at Greenwood Park, a beer garden, recently took to Yelp to complain about all the children run amok and presumably cramping their style.


“I understand you still want to be ‘hip’ and out in brooklyn,” wrote Jaybird N., “but yer a parent now, so take your damn kids home and don’t mess with my chosen child free existence.”


There are already blogs devoted to mocking over-sharing parents who, for example, post photos of their placentas. (“You used to be fun,” reads the tagline. “Now you have a baby.”) A tongue-in-cheek clothing line called AntiBaby sells T-shirts, hats and baby bibs sporting slogans like “I’m not pro-abortion, I’m anti-baby!”


Andrea Bartz, 26, a Brooklyn-based co-writer of the blog and book “Stuff Hipsters Hate,” said that hipsters and babies were natural-born enemies. “I think the reason that hipsters don’t like babies is that babies are the ultimate symbol that you’ve settled down,” she said.


“It means you reached this new echelon of adulthood,” she added. “And I think hipsterdom is marked by extended adolescence.”


Unbaby.me has provoked some predictable backlash among parents. Writing for TechCrunch, Sarah Perez begged “non-breeders” to relax. “Excuse me while I go work on an app that removes those incessant pictures of your pets.”


Adam Dooling, 32, an art gallery registrar from Brooklyn, put it this way: “I think babies remind of us of the fact that we’re getting old and we’re getting boring.”