Image format guides
Short, practical answers to the image problems people run into most: photos that won't open, files that are too big, and formats nobody explains.
Why HEIC photos won't open on Windows
Why iPhone HEIC photos won't open on Windows 10 and 11, the codecs Microsoft offers, and the fastest fix: convert HEIC to JPG in your browser.
How to stop your iPhone saving photos as HEIC
Switch your iPhone camera from HEIC to JPG, set photo transfers to convert automatically, and convert existing HEIC photos. Step by step, with trade-offs.
What is a WebP file and how to save it as JPG
What WebP images are, why websites use them, why they won't open in some apps, and how to save a WebP as JPG or PNG without uploading it.
How to reduce photo size for online forms
How to shrink a photo or scan to 20, 50, 100 or 200 KB for job applications, exam portals and government forms, with exact dimensions and no upload.
AVIF vs WebP vs JPG: which format to use
A plain comparison of AVIF, WebP and JPG: file size, quality, transparency, browser and app support, plus when to use each for websites and sharing.
How to combine multiple photos into one PDF
Turn several photos or scans into one PDF in the right order, on any device, without uploading. Page size, margins, file size and readability tips.