A woman was slashed in the face with a razorblade in broad daylight in Williamsburg and left with a gash that required 44 stitches.

Dana Sagona, 31, was waiting for a Lyft from her friend’s place near Boerum and White Street Sunday at around 7:45 a.m. when a man approached her.

“You pretty. Are you scared?” he asked her, according to police sources.

Sagona, a librarian at the New York Public Library, said “no” — and that’s when the creep grabbed her.

“I thought it was going to be a rape because he didn’t ask me for anything by that point, he was just grabbing me,” Sagona told The Post on Monday.

The man and Sagona struggled over her purse for about 30 seconds.

“I will kill you,” he growled, before slashing her left cheek and punching her so hard she fell to the ground.

The Sunnyside resident said she didn’t realize she’d been cut until she saw blood.

“The blood was gushing, it was pooling in my scarf,” Sagona said. “When I saw how big it was, I was shocked. I’m still in shock at the size,” she added about the gash.

The attacker ran off with Sagona’s purse containing her phone, keys, credit cards and a $130 MetroCard, sources said.

After the attack, Sagona tried flagging down an Uber but it wouldn’t stop. A man walked out of his house shortly after and called 911.

She was treated at Woodhull Medical Center.

“Enough is enough with bad things that have been happening to me,” said Sagona, who lost her fiancé to cancer in October 2017.

The Long Island native, who moved to the Big Apple in 2013, said she’s vigilant when walking down city streets.

“I definitely have always feared something like this,” she said.

The attack is still under investigation.

Additional reporting by Tamar Lapin