QUICK ANSWERStart with the tool that matches your immediate input.
Open ZIP Contents Viewer first when its stated purpose matches the result you need now. Use ZIP File Extractor only when it solves a separate next task.
This guide is for writers, office teams, students, and data workers. Start with ZIP Contents Viewer when your immediate task is to inspect your input with the ZIP Contents Viewer and review a clear, useful report. Move to ZIP File Extractor only when you also need to use the ZIP File Extractor 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 ZIP File Extractor solves a genuinely different next step.
Both tools sit in Documents & Files, but they handle different inputs or outcomes. Keeping those roles separate reduces repeated work and makes verification easier.