Edmund Schneider could make even the FDNY’s worst tweeters cringe.

The former city fire dispatcher from Long Island writes a blog at FDNYRetiree.com that blazes with hatred of “Negroes,” “Mooslims” and “fags.”

Schneider, 71, who left New York 23 years ago, collects a monthly city pension of $1,468.94. His blog is splashed with images of the American flag, FDNY and NYPD patches and 9/11.

Among his racist rants:

* “If you ACT like a n—–, you’re gonna be CALLED a n—–!” he warned in a February post accompanied by a photo of a black woman with watermelon rinds on her chest.

* “Negroes commit by FAR the bulk of the violent crime in the United States,” he wrote in March. “But why? Simple, really, it’ something called a ‘FAMILY,’ — which is foreign to the average Negro, who lives in a household run by a ‘mammy ho’ who pumps out kids like a bunny for welfare checks.”

* “Politically correct imbeciles decided to grant the ‘mostly female Negro’ 911 dispatchers virtually lateral access to the ‘mostly white male’ FDNY dispatch force. And they destroyed it!” he wrote.

* Of First Lady Michelle Obama, he snipes, “The Mooch sure as hell has a big, fat ass! And it’s black, too.” He also calls President Obama a “black bastard” and “the anti-Christ.”

* Bill Clinton and Hillary Rodham Clinton (a “lessie”) “flipped on fags” to support “fruitcake marriage.”

* “Don’t Trust a Single Damned Muslim!” he titled another diatribe.

Two FDNY medics got in hot water last month after The Post revealed their racist tweets. Fire Commissioner Sal Cassano’s EMT son, Joseph, resigned, and Brooklyn EMS Lt. Timothy Dluhos was suspended without pay.

Schneider has two Twitter accounts, @FDNYretiree and @fdnyretired, which post links to his site. His followers include the FDNY hockey team.

Reached yesterday at his home in Venice, Fla., Schneider defended his views.

“Offensive is in the eye of the beholder. It’s not hate speech. It’s all opinion, and it’s all based on fact,” he said.

“I’m not a racist. Some of my best friends in the Fire Department were black, and some of them were over at my house.”

His site sells placemats, bookmarks, CDs of 9/11 images and his memoir and posts links to FDNY news.

An FDNY official contacted him on Friday after The Post asked about him.

“The vile and despicable ramblings on this Web site are clearly the work of a sick individual with way too much time on his hands,” an FDNY spokesman said. “We have referred the matter to the Law Department.”