Smile filter

google/nano-banana-2.1/edit on fal is prompted for that natural smile. The vendor rate is $0.0336 (Google's 1K list) and is not what you are billed. We ask identity to stay: eyes still yours, nose still yours, face shape still the one in the upload, clothes and background unmoved. The thing that should move is the mouth and the expression that follows from it, including a little change at the cheeks and the lower eyelids, because real smiles do not happen on the lips alone.

Teeth are where the invention shows. An uneven edge or a gap may be replaced by a uniform white arc, which is an average smile, not a dental plan. Do not adopt those teeth as a preview of dentistry. A closed mouth avoids the problem, and many people want exactly that. The prompt says natural, not "show teeth." Sometimes the lips stay closed. Sometimes they part. You cannot force the closed version. Teeth that look like someone else's answered a different question.

Asymmetry is the other loss. Many people smile higher on one side, or one eye narrows more. The model balances that away. A perfectly mirrored smile on a face you know is crooked is the flattered version. It can still tell you whether a smile changes the cheek, which is a fair visual question. It cannot tell you that your asymmetry will vanish. If the result keeps a little unevenness, that is a better likeness, not a defect to rerun until it disappears.

A new jaw is excluded. Smiling can reveal the jaw corner and change how wide the face looks. It should not narrow the bone, lengthen the chin, or tuck the lip into a different profile. Check the ear and the jaw angle against the original. If the ear is identical and the jaw was redrawn, the edit sculpted. We asked it not to.

Eye color staying put is a simple audit. A smile run that recolors the iris mixed in the Eye color changer. Skin that shifts a shade mixed in a different tool. The Age filter is the one that is allowed to move wrinkles. This page should not age you down by erasing crow's feet that a real smile would actually deepen. Watch the outer eye. A smile that deletes lines you have, and fills the cheeks like a retouch, is a beauty filter wearing a smile as an excuse. Nasolabial folds often deepen when the cheek lifts. Their total disappearance is the tell.

Expression above the mouth matters as much. A natural smile reaches the lower lid. A smile painted on a frozen, wide-open stare looks like a sticker, even when the teeth are fine. Brows should not shoot up into a surprised arch unless your smile already does that. We are not asking for laughter, and not for a grimace. If the result looks like a laugh with a new head tilt, the pose drifted. Pose and clothes stay. A tilted head is a new photo.

The clearest input is a neutral face, mouth at rest, both eyes visible, no hand near the chin. If you are already smiling, the edit may stack a second smile on the first and stretch the mouth. That stack is how you get too many teeth. A blurry mouth gives the model nothing to move, so it pastes a generic one. Focus on the lips. Glasses can hide the lower lid, which is half of how you will judge whether the smile arrived. If you always wear them, keep them, and accept that the lid check is harder. Do not use a filter that has already lifted your cheeks.

You tick "This is me and I am 18 or older." Adult faces only, and only your own. JPEG, PNG, or WebP, under 8 MB, short edge at least 256 pixels. Empty files, oversized files, tiny files, and a missing checkbox never call the model and never charge. A missing model key stops clean, unpaid.

One logged-out preview: watermark on the diagonal reading EASYFACE, long edge 800 pixels, use stored by IP and cookie. Not refilled daily. No signup credits. HD without the watermark costs 1 credit when the image succeeds. Failures refund the credit or leave the free preview unused. How to use the smile filter is the order of operations. The category is Face. Publishing a group shot is a separate, local step: Face blur.