Guides
Clear, practical explanations of the rules behind photo and video sizes, and how to get common jobs done right the first time.
How to compress a video for WhatsApp and emailSize limits for WhatsApp, Gmail and Outlook, and how to make a video small enough to send while keeping it sharp.
Image size explained: KB, pixels and DPIWhat KB, pixels and DPI mean, how they relate, and what forms really mean when they ask for a photo of a certain size.
Why exam photo and signature uploads get rejectedThe most common reasons exam portals reject photos, signatures, thumb impressions and declarations, and how to fix each one.
How to take a passport photo at homeLight, background, camera position and posture for a passport or visa photo taken with a phone, and how to print it cheaply.
Getting clean cut-outs: background removal tipsHow to get a clean background removal on people, hair, pets and products, and how to export the result for shops, profiles and designs.
How to add captions to a videoAutomatic captions, checking and editing them, burned-in captions versus SRT files, and caption styles that are easy to read.
Tool guides
Every tool page also has a detailed guide below the tool: