2x2 Photo (2×2 inch / 51×51 mm)

The 2×2 inch photo, equal to 51×51 mm, is one of the most widely recognised square portrait formats in the world. Its generous size and square shape make it a standard request for many official and semi-official documents, and it is often the default when a "2 by 2" passport-style photo is asked for.

Need to print it? See how to print 2x2 passport photos at home or in store.

Although the larger frame is more forgiving than tiny formats, the head must still fall within a specific range and the background must be perfectly clean. Our service prepares the image to the exact figures so it is ready for any submission that uses this size.

Where this size is used

A 2×2 inch square is a generic, internationally familiar format requested for a broad range of identity documents, official applications, visas in several countries, and various forms and credentials. Because so many bodies standardise on 51×51 mm, one carefully prepared photo usually works across multiple submissions. Always confirm any additional instructions on your specific request.

Exact specification

The photo is 51×51 mm (2×2 inch) at 300 dpi, giving plenty of resolution for crisp printing. The head should measure about 38.25 mm from chin to crown, which is roughly 50–69% of the frame height — a noticeably smaller proportion than the tiny formats, leaving clear space around the head. The face is centred and looks straight at the camera over a plain white background.

• Size: 51×51 mm (2×2 inch), square
• Resolution: 300 dpi
• Head height: about 38.25 mm (50–69% of the frame)
• Background: plain white (#FFFFFF), even and shadow-free
• Expression: neutral, mouth closed, no smile
• Glasses: not allowed
• Headwear: religious reasons only, face fully visible
• File: JPG, up to 2 MB

Common reasons photos get rejected

With the 2×2 format, a frequent mistake is sizing the head too large, as if it were a tightly cropped passport photo; here the head should fill only 50–69% of the frame, with visible space above and around it. Other recurring issues are off-white or shadowed backgrounds, smiling or an open mouth, and wearing glasses, which are not permitted. We check the head proportion carefully, clean the background to even white, and confirm the expression before delivering your file.

How we prepare your photo

You provide a clear, front-facing picture in soft light. Our service crops to the 51×51 mm square, scales the head into the 50–69% range with the correct head room, and replaces the background with smooth white. We balance brightness and colour so the portrait looks natural, then save a 300 dpi JPG kept under 2 MB.

Printing and digital use

The 2×2 inch format prints beautifully at 300 dpi, and its size means a single 51×51 mm image often sits two-up or four-up on a standard 10×15 cm photo sheet. The same JPG, kept below 2 MB, uploads easily to online application portals, so you can use one prepared file for both printed copies and electronic submissions without losing quality.

Lighting and clothing

Soft, frontal lighting gives the 2×2 inch portrait an even, natural look. Face the light, keep both sides of your face equally lit, and avoid shadows falling on the white background behind you. Choose clothing with a bit of colour so your shoulders separate from the backdrop; plain white or very pale tops can merge with the background in a square crop. With the head filling only 50–69% of this larger frame, clean lighting across the whole picture is what makes it look professional.

Why the head room matters

A common surprise with the 2×2 inch format is how much space sits above and around the head. Unlike tightly cropped sizes, this format deliberately leaves margin, with the head at 50–69% of the frame. If the face is enlarged to fill the square, the photo no longer matches the standard and is likely to be returned. We set the head room precisely so your portrait fits the expected layout.

Before you submit

Check your finished 2×2 inch file against the standard one last time: the square is exactly 51 by 51 millimetres, the head fills 50–69% of the frame with clear space around it, the background is even white, the expression is neutral with no smile, glasses are off, and the JPG is under 2 MB at 300 dpi. This quick final pass is the surest way to avoid a return, and it is the same review our service applies to every file before delivery.