Is your photo actually sharp, or was it softened by misfocus, camera shake or a phone filter? Drop the photo here and get an indicative sharpness reading based on edge detail. The file is read on your device; nothing is uploaded, and nothing is edited.

What this checks: whether the photo keeps crisp edge detail across the picture. What it does not check: the size, background colour, exposure or framing of the whole photo — and it never edits or exports the file.

Is the photo sharp enough? The honest rule

The UK government tells passport applicants their digital photo must be “clear and in focus” and “unaltered by computer software” (GOV.UK, Get a passport photo). No passport authority publishes a number for sharpness the way it publishes a millimetre size — “in focus” is a human judgement. That is why this tool reads as sharp or soft, never fail: it measures edge detail and reports honestly, and a soft reading is a prompt to look again, not a rejection.

It works in three moves. It converts the photo to greyscale, computes the variance of the Laplacian across the picture — a standard no-reference focus measure that grows with pixel-to-pixel edge detail — and turns that into a 0–100 indicative index. Two honest guards sit in front of the verdict: a picture that is too dark, too flat (almost no contrast) or too small cannot be told apart from a blurred one, so the result is unknown rather than a guess. It does not retouch, edit or export anything — judging only, never changing.

What each result means

• sharp — edge detail reads high across the picture.
• soft — edge detail reads low, which can point to misfocus, camera shake, digital zoom or smoothing. A prompt to look again, not a rejection.
• unknown — the image is too dark, too featureless or too small to judge. No verdict is given rather than a misleading one.

Sharpness is judged differently country to country

• United Kingdom — the photo must be “clear and in focus” and “unaltered by computer software” (GOV.UK).
• Malta — the face “must be in sharp focus, straight to the camera, with the eyes open and clearly visible”.
• Bhutan — image quality calls for a photo “in sharp focus, with no shadow on the face or background”.

The common thread is that focus and clarity are checked by eye, so a slightly soft phone photo often fails where a sharp one passes. For the full picture of what the rules say about focus, sharpness and contrast, see the photo quality and focus guide, and check the exact size for your country in photo sizes.

Why a phone photo turns out soft

• Focus missed — the camera locked onto the wall behind you. Tap the screen on your face before you shoot.
• Camera shake — a slow shutter in dim light blurs the whole frame. Use more light and hold still, or rest the phone on a shelf.
• Digital zoom — cropping in software throws away pixels and softens edges. Move closer instead.
• Beauty and portrait modes — skin smoothing and background blur soften the face. Turn them off.

Related checks

Sharpness is one rule among several. Check face and background shadow with the photo shadow checker, run the whole photo through the passport photo checker for size, background and head position, verify the file will be accepted at upload with the photo upload preflight, and read the usual failure points in passport photo rejection reasons.

Frequently asked questions

How sharp does a passport photo need to be?
Officially, “clear and in focus” — there is no published sharpness number. In practice the face, eyes and hairline should show crisp edges with no blur when you view the photo at full size.

Can I sharpen a soft photo with software?
No. Most authorities, including the UK, require the photo to be unaltered by computer software, and over-sharpening creates the hard edges and halos examiners reject. Retake the photo instead of editing it.

Why did the checker say “unknown”?
If the picture is too dark, almost featureless, or very small, softness cannot be told apart from those problems. The tool stays silent rather than mislead; retake in even light against a plain background.

Is a sharp photo enough to pass?
No. Focus is one rule. The photo must also be the right size, on a plain background, correctly framed and unedited. Run the full passport photo checker as well.

Is my photo uploaded anywhere?
No. The file is read in your browser with JavaScript and never leaves your device; nothing is stored or sent to a server.

Will this tool fix a blurred photo?
No. It only judges; it does not retouch, edit or export. To fix a soft photo you have to take a new one — sharpening software is not allowed.

Related: the focus rules in passport photo quality and focus, shadow testing with the photo shadow checker, the full check in the passport photo checker, and everything else in all tools.

Source: GOV.UK, Get a passport photo (gov.uk/photos-for-passports) — “clear and in focus… unaltered by computer software”; cross-referenced against the Maltese (identitymalta.com) “sharp focus” wording and the Bhutanese “in sharp focus” requirement. Retrieved 2026-10-06. Requirements can change, so confirm them on the official page before you apply.

Quality & focus guide ← All tools