Practical guides for the free, in-browser Resize4U tools — compress photos to an exact KB size, get passport and visa photos right the first time, and pick the correct dimensions for every social platform.
Every social media image dimension you need in 2026 — Instagram posts and Reels, Facebook covers, X headers, LinkedIn banners, YouTube thumbnails — with tips to avoid blurry crops.
The exact passport and visa photo sizes for every major country in mm, inches and pixels — plus head position, background rules and how to resize your photo to comply for free.
Step-by-step guide to compress a JPEG or PNG to an exact KB size for government forms, job applications and exam uploads — right in your browser, no software needed.
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