Practical guides

Make the right file change—not just another file.

These guides explain the decisions around the tools: what a limit means, what an operation changes, and what to inspect before submission.

How image KB limits actually work

Understand decimal KB, why “under” is safer than “exact,” and what compression changes.

Use aspect ratio to decide whether you need new dimensions, a crop, or both.

Choose a format based on transparency, detail, file size, and destination support.

Learn what metadata can reveal and why “no fields detected” is not an absolute guarantee.

Plan page order, paper size, orientation, margins, and final inspection before submission.

Troubleshoot format, byte size, dimensions, corruption, naming, and portal-specific rules in a safe order.