A job application deadline showing up faster than expected, with no time to arrange a proper photo, is a genuinely common situation. The instinct is often to either skip the photo entirely or submit whatever casual picture is available. There's usually a better middle option that takes a few minutes.
Look through your recent photos for one where your face is clearly visible, reasonably well-lit, and not mid-blink or mid-laugh in a way that reads as too casual. You're not looking for a perfect photo — just one with a decent starting point on the things that are hardest to fix afterward: expression and lighting.
A lot of casual photos are taken from too far away, showing a full outfit or a wider scene, which reads as informal. Cropping in closer, to a head-and-shoulders framing similar to a proper headshot, does a surprising amount of work in making a casual photo feel more intentional and professional.
A casual photo taken at a family event, outdoors, or in a cluttered room instantly signals "this wasn't taken for a job application," regardless of how good the framing and lighting are. This is also the easiest single thing to fix — swapping whatever's behind you for a plain, neutral background removes the biggest visual clue that the photo wasn't originally meant for this purpose.
A photo that's slightly too dark, too warm-toned, or slightly washed out benefits from small brightness and color corrections — most phone photo editors have simple sliders for this that take seconds to adjust and noticeably improve how polished the final result looks.
If every available photo has poor lighting on your face or an awkward expression, no amount of background or cropping work will fully fix that — at that point, it's worth taking five minutes near a window for a fresh photo rather than trying to salvage a fundamentally weak starting image.
A deadline doesn't have to mean submitting a photo you're not happy with. A decent existing photo, cropped tighter and given a clean background, usually gets you most of the way to something genuinely presentable.