QUICK ANSWERStart with the tool that matches your immediate input.
Open Remove PDF Pages first when its stated purpose matches the result you need now. Use Reorder PDF Pages only when it solves a separate next task.
This guide is for students, office teams, administrators, and document-heavy workflows. Start with Remove PDF Pages when your immediate task is to use the Remove PDF Pages to complete this file task privately in your browser. Move to Reorder PDF Pages only when you also need to use the Reorder PDF Pages to complete this file task privately in your browser.
The goal is not to run two tools automatically. It is to finish the first narrow task, inspect its result, and then decide whether Reorder PDF Pages solves a genuinely different next step.
Both tools sit in PDF Tools, but they handle different inputs or outcomes. Keeping those roles separate reduces repeated work and makes verification easier.