Guides
How photo, PDF and upload requirements work, and how to meet them. Country facts come from official pages we checked.
Country requirements
Passport photo size by country: verified specs and sources
Passport, visa and residence photo sizes for the UK, Canada, Australia, Ireland, Germany, France and more, each linked to the official page we checked.
India e-Visa photo and passport page upload: what differs
India e-Visa portrait vs passport-page PDF, and how passport, regular visa and OCI photos differ. Sizes read from official pages, and what we cannot do yet.
Singapore passport and pass photo requirements (ICA and MOM)
Singapore ICA digital, overseas printed and non-passport pass photo workflows kept apart, plus the separate MOM upload limit, each linked to an official page.
Canada photos: passport, PR card, citizenship and visa
Which Canadian photo rule applies to a passport, PR card, citizenship or visa application, and why a passport preset is not reused for the others.
US passport and visa photos: paper, online renewal and DS-160
Which US photo channel is which: paper passport, online passport renewal and the DS-160 visa upload. What we saw in summaries, and why there is no US preset yet.
Photos
Passport photo size in pixels, mm and inches
Convert passport photo sizes between millimetres, inches and pixels at 150, 300 and 600 DPI, with the formula and worked examples.
Printed vs digital passport photos: what changes
Why a photo for a paper application and a photo for an online upload have different rules, and how to prepare each one.
What DPI means for photos, scans and uploads
DPI explained without jargon: when it matters for printing and scanning, and why it does not change an online upload.
How we verify photo and upload requirements
Our rule for publishing a country preset: an official source we read, a date we checked it, and a review deadline. What we leave out and why.
How to resize a photo to exact pixels (600×600, 413×531 and more)
Crop first, then resize, so a photo hits an exact pixel size without stretching. Includes the arithmetic from millimetres to pixels.
A4 vs US Letter: which page size should your PDF use?
A4 and US Letter differ in size and are used in different countries. Learn which to choose for a PDF and how to convert images to either.
How to convert JPG and PNG to PDF (A4, Letter or fit to image)
Turn photos and scans into one PDF on your device. Choose A4, US Letter or the image's own size, reorder pages, and keep files private.
How to merge PDF files into one, privately in your browser
Combine several PDFs into a single file in the order you choose. Steps, page-order tips and what to check before you upload the result.
How to format a PDF: what each task needs and what we can't do
“Format a PDF” can mean merging, splitting, resizing pages or compressing. A task-to-tool table with examples, and the operations GetFormatted does not offer.
Images
KB vs MB vs KiB: why file-size limits are ambiguous
1 MB can mean 1,000,000 or 1,048,576 bytes. See why upload limits are ambiguous and how much headroom to leave.
JPEG, PNG or WebP: which image format for uploads?
Which image format to choose for passport photos, scans and web uploads, and what is lost when you convert between them.
Portals and uploads
Visa and immigration document upload limits by portal
File size and type limits for UKVI, USCIS, IRCC, ImmiAccount, German and Dutch portals, with the official source and whether we saw the full page.
How to reduce a scan or photo to fit a visa upload limit
Practical steps to bring a scanned document or photo under a portal's file-size limit without making the text unreadable.
How to get a PDF under a size limit (100 KB, 1 MB, 6 MB)
Ways to bring a PDF under an upload limit when the portal rejects it as too large, and what to do when the file is a scan.