Photo rules, document uploads, social frames and file formats, explained from the destination back. Each guide links the official pages it relies on and carries the date it was last reviewed.
Latest guide · Image Guides · 9 min read
Every ratio crop starts from the shape your camera recorded. Here is how much of a 4:3 or 3:2 photo each common ratio keeps, and when padding or a new shot is the better choice.
Ines Kowalczyk ·
File Formats & Fixes9 min read
HEIC saves space on an iPhone but trips up forms, Windows PCs and print shops. Here is where to keep it, where to send JPG instead, and when PNG or a PDF is the better target.
Ines Kowalczyk ·
Social & Mobile11 min read
Instagram now takes feed photos up to 3:4. Here is how to frame one picture so its subject survives the feed, the narrower profile grid tile and a 9:16 story.
Tobias Mwangi ·
Image Guides9 min read
Before you combine photos, decide whether the result should be one picture or one PDF. The destination answers it, and each output has its own few settings that matter.
Ines Kowalczyk ·
Photo & Size Requirements11 min read
Why a white shirt, a toothy smile or a pair of glasses can get a passport photo flagged, and how US, UK, Canadian and Australian rules differ on each one.
Teodora Vasileva ·
Photo & Size Requirements11 min read
Passport photo sizes fall into four families. Learn which countries use which size, where the rules really differ, and how to shoot one master photo that crops to every one.
Teodora Vasileva ·
PDF & Documents9 min read
Open passwords, permission limits, flattening and encrypted ZIPs each solve a different problem. Work out what could actually go wrong with your file, then pick the protection that answers it.
Callum Ashdown ·
PDF & Documents11 min read
Contracts, CVs, scans, table-heavy reports and forms each convert to Word differently. Pick your document type and get the route, the settings and the cases where converting is the wrong move.
Callum Ashdown ·
Image Guides10 min read
A signature, a face photo and a scanned certificate each fail in their own way when you shrink them. Here is the order of steps for each, and how to read the KB window a form gives.
Ines Kowalczyk ·
PDF & Documents10 min read
One careful scan, two files: a searchable PDF/A archive copy you keep for years and a light upload copy for portals and email, made from it in a minute.
Callum Ashdown ·
PDF & Documents10 min read
Turn one long scan into the separate, named, upright files an application portal asks for, and get each one under its size limit without rescanning.
Callum Ashdown ·
File Formats & Fixes11 min read
Unzip any ZIP on a computer or phone in a minute, then match the error you see, from damaged archives and passwords to split parts and garbled names, to its fix.
Tobias Mwangi ·
Photo & Size Requirements10 min read
One phone photo can become both the 600 × 600 px file for a US visa form and the 2 × 2 inch print an interview may need. Here is the arithmetic and the order of work.
Teodora Vasileva ·
Photo & Size Requirements10 min read
A form says "passport size photo" and nothing else. Here is what the phrase usually means by region, the clues a form gives away, and how to turn the size into pixels and KB.
Teodora Vasileva ·
Social & Mobile10 min read
Resolution, frame rate, HDR and codec decide how big a phone video gets. Here is what each setting costs and the order that shrinks a clip with the least visible loss.
Tobias Mwangi ·