Practical upload guides

Understand the rule. Fix the file once.

Official-source country explainers plus plain-language guides to the PDF and image requirements that make online forms reject otherwise useful files.

How to merge PDF files in the correct order

Build a clear application packet while protecting originals and checking the finished page order.

Create separate files from ranges, individual pages, and non-adjacent page groups.

Target 100 KB, 500 KB, 1 MB, or another upload ceiling without sacrificing more quality than necessary.

Prepare the technical file while keeping the State Department’s separate photo-content rules in view.

Why RulePix checks the original instead of cropping a photo the passport service says not to crop.

Check the photographer’s original JPEG for its 3:2 ratio, pixels, and 200 KB–5 MB window.

Validate the official JPG, 3:4 ratio, pixel range, and 250 KB–5 MB file-size range.

Use shared ICAO principles for photo content, but copy technical limits from the specific national portal.

Why “under 50 KB” and “20–50 KB” are different problems—and how to solve both.

A practical guide to width × height rules without stretched faces or rejected files.

Choose the format a portal will accept without making your file unnecessarily large.

A quick final review for file size, pixels, format, filename, and visible content.