Guides

Practical fixes for everyday file problems: photos that won't open, odd image formats, favicons, audio from video, and staying private while you convert.

iPhone photos (HEIC) won't open on Windows? Here's how to fix it
Why iPhone photos arrive as .heic files, why Windows can't open them, and three ways to fix it — including stopping it from happening again.
Saved an image and got a .webp file? How to get a normal JPG or PNG
Why websites hand you WebP files, why some apps won't open them, and how to turn them into JPG or PNG — plus which of the two to pick.
How to make a favicon.ico: the sizes and formats you actually need
A plain-language guide to favicons: which sizes matter, ICO vs PNG vs SVG, the HTML to add, and how to make one from an image you already have.
How to extract the audio from a video (MP4 or MOV to MP3)
Save just the sound from a video as an MP3 — which bitrate to choose, when to use WAV instead, and why private recordings shouldn't be uploaded.
Are online file converters safe? What happens to your files
What really happens when you upload a file to a converter, which files deserve extra care, and how to check for yourself that nothing leaves your device.