Big Forehead Filter: Turn Any Photo into a Giant Forehead Prank

The big forehead filter is the TikTok prank where someone's forehead suddenly grows two or three times taller. Upload a photo of yourself or a friend and the AI stretches the forehead up into a smooth, shiny dome and pushes the hairline toward the top of the frame, while the eyebrows, eyes, nose, mouth, beard and expression stay exactly where they were. Lighting, skin texture and the background are matched, so it looks like a real phone camera filter rather than a cartoon. If you want other ways to warp a face, such as a tiny face, a wide face or swapped features, the funny face filter page covers the whole range; this page does one thing, the big forehead, and does it well. The console below runs on GPT Image 2.5.
Long Hair, Tall Forehead
Long Hair, Tall Forehead
Hoodie Forehead
Hoodie Forehead
Park Selfie Dome
Park Selfie Dome
Street Style Forehead
Street Style Forehead
Upload a photo to give it a big forehead
Effect prompt
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Big Forehead Filter Results from the Console

Each pair is one upload with the prompt above. Only the forehead grows; the face, hair, clothes and background come from the original photo.
Long Hair, Tall Forehead - Big Forehead Filter

Long Hair, Tall Forehead

Hoodie Forehead - Big Forehead Filter

Hoodie Forehead

Park Selfie Dome - Big Forehead Filter

Park Selfie Dome

Street Style Forehead - Big Forehead Filter

Street Style Forehead

How to Use the Big Forehead Filter

01

Upload a photo

A front-facing photo with the whole head in frame and some space above it works best.

02

Generate

The big forehead prompt is already filled in. Press the button and the forehead grows.

03

Prank and share

Send it to the group chat, post it as a reaction or use it in a TikTok duet.

Why This Big Forehead Filter Is So Funny

Only the forehead changes

Eyes, nose, mouth and beard stay the same size, which makes the giant forehead look even bigger.

Only the forehead changes - Big Forehead Filter

Looks like a real filter

Same lighting, skin texture and background, with no cartoon drawing style.

Looks like a real filter - Big Forehead Filter

Still recognizable

Friends can tell exactly who it is, which is what makes the prank land.

Still recognizable - Big Forehead Filter

Free to try

New accounts get free credits, so your first big forehead photo costs nothing.

Free to try - Big Forehead Filter

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Big Forehead Filter FAQ

What is the big forehead filter?

It is a viral TikTok face filter that makes the forehead comically huge while the rest of the face stays normal.

Can I use it on a friend's photo?

Yes, any clear photo of a face works. Keep it friendly and only share pranks your friends are happy with.

What photo works best?

A front-facing photo with the top of the head visible. If the head is cropped at the top, the AI has less room to grow the forehead.

Can I make the forehead even bigger or smaller?

Yes. Edit the prompt, for example change "two to three times" to "four times" or "one and a half times".

What other face filters can I try?

For tiny faces, wide faces, swapped eyes and other warps, try the funny face filter.

Give Your Friends a Forehead to Remember

Upload a photo and get your big forehead prank in under a minute.

Try the Big Forehead Filter