Eliminate the AI Necklace Glitch in Your Professional Headshot

Why the AI Creates a Phantom Necklace

You upload a perfect photo. Your smile is genuine, the lighting is soft, and you're wearing a simple crewneck shirt. The AI returns a headshot where a strange, shimmering band cuts across your collarbone. It looks like a necklace made of liquid mercury. This is the "AI necklace," a common artifact that makes your photo look fake. The cause is simple: confusion. The AI is trained on millions of images of professionals. Many of those people are wearing jewelry, scarves, or high collar seams. When your photo has a sharp tonal shift between your neck and your clothing—a shadow, a tan line, the edge of a v-neck—the software sometimes misreads that line as a separate object. It tries to "complete" what it thinks is a necklace or collar by generating new pixels there. The result is a glitch that screams "computer-made."

Your Best Defense: The Input Photo

Think of your starting photo as the raw ingredient for a recipe. A blurry, poorly lit selfie guarantees a glitchy outcome. You need to give the AI clear, consistent information. Shoot against a plain, light-colored wall. Wear a solid-color top with a crewneck or jewel neckline—this creates one clean, continuous line. Avoid v-necks and collared shirts for this process; their seams are glitch magnets. Most importantly, ensure even light on your neck and chest. I tell my clients to stand where a window light falls evenly on them, eliminating harsh shadows below the chin. A shadow from your jawline can trick the AI into seeing a "line" that needs decorating. One client sent a photo in a dark turtleneck; the AI generated a glowing, pearl-like strand right where the fabric met her skin. The fix started with a new photo in a light grey crewneck.

The Fast Fix: Simple In-Painting

So the glitch appears on your generated headshot. Don't panic and don't trash it. Open any basic photo editor with a healing or clone stamp tool. Zoom in to 200% on the necklace artifact. Your goal is to replace the weird, generated pixels with pixels that match the surrounding skin and fabric. Use a small, soft brush. Sample clean skin from just above the glitch, and gently paint over it. For a glitch on clothing, sample from the shirt fabric. Work in tiny strokes. If the glitch is severe, you might use the editor's "in-painting" or "content-aware fill" function, but always check the result—sometimes it creates new blurriness. I fixed a client's image in 90 seconds this way. The key is subtlety; you're not painting a new neck, you're erasing a mistake.

Don't Make This Cropping Mistake

Here's the instinctive, wrong solution: cropping in so tightly that you chop off the glitch—and your shoulders. This gives you a floating head that looks awkward and unbalanced. A professional headshot needs breathing room. The standard crop shows you from mid-chest up, with a bit of shoulder visible. This framing feels stable and approachable. If you crop just below the chin to avoid a neck glitch, you create a jarring, boxed-in image that hiring managers will notice (for the wrong reasons). Instead, fix the glitch manually, then crop properly. One software engineer sent me a headshot cropped at his Adam's apple; it looked like his head was mounted on a stick. We fixed the faint necklace line, recropped to show his collarbone, and the difference was night and day.

Getting a Flawless Final Image

Avoiding the glitch and fixing it are skills, but your final check is about feel. After you've edited, step away from the computer for ten minutes. Then look at the image at full size and ask three questions. First, does the skin texture on my neck look consistent and real, not smudged or plastic? Second, does the clothing line look like fabric, not a painted-on stripe? Third, would a stranger think this was taken by a camera in a room? Show it to a brutally honest friend and ask, "Does anything look off here?" They'll spot lingering issues you've gone blind to. Finally, resize the image for LinkedIn (ideally 1200 x 1200 pixels); downsizing can minimize any remaining minor imperfections. The goal is a photo that feels authentically you, not a perfect, sterile avatar.

Your headshot is a handshake. A glitch is a limp, wet fish in that handshake. By controlling your source photo, learning a two-minute edit, and keeping a sensible crop, you take control back from the algorithm. The result is a polished image that feels genuinely professional, because you put a real human eye on the final product.