Free passport photo tools
8 tools for the questions a photo rule raises: does my photo pass, is my head the right size, is the background plain enough, how do I get under a KB limit, and how many pixels or photos per sheet do I need. They are free to use and need no account; the photo tools work on your device without uploading anything.
Check a photo
Open a photo and the tool measures it on your device: face, head size, background, file size. Nothing is uploaded.
- Free passport photo checkerChecks a photo against a document's rules: face, head size, eyes, expression, lighting, background and resolution, each with the measured value.
- Head height checkerMeasures chin-to-crown height and the eye line as a share of your photo's height and compares them with a document's allowed range.
- Background checkerSamples the edges of your photo for colour, brightness and evenness, and tells you whether the background works for a chosen document.
- Photo KB resizerRe-encodes a JPEG to fit under a file-size limit in KB, keeping the highest quality that fits, and downloads the result.
Related guides: What officers actually check, and what no checker can promise, How to escape the retake loop, Head size and position rules, country by country, Glasses glare and 'eyes closed' false positives
Sizes, pixels and printing
Calculators for the numbers authorities and portals ask for: millimetres, pixels, DPI, sizes between documents and how many photos fit on a sheet.
- mm to pixels converterConverts between millimetres, centimetres, inches and pixels at any DPI.
- DPI calculatorWorks out the DPI a photo prints at from its pixels and the print size, and whether that meets a document's print resolution.
- Photo size converterCompares two photo sizes to scale and shows how much has to be cropped to turn one into the other.
- Print sheet plannerShows how many photos of a size fit on a 4 x 6 in, A4 or US Letter sheet, with the layout drawn to scale.
Related guides: Millimetres to pixels and DPI for passport photos, Pixel dimensions explained: minimums, maximums and exact sizes, Printer settings for passport photos: a walkthrough, Aspect ratio mismatch: why a big photo can be the wrong shape
We are an independent service, not a government website. Applying for a passport or visa is done with your government; we only prepare the photo.