QUICK ANSWERStart with the tool that matches your immediate input.
Open Subtitle Time Shifter first when its stated purpose matches the result you need now. Use ZIP File Creator only when it solves a separate next task.
This guide is for writers, office teams, students, and data workers. Start with Subtitle Time Shifter when your immediate task is to use the Subtitle Time Shifter to complete this file task privately in your browser. Move to ZIP File Creator only when you also need to use the ZIP File Creator 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 Creator 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.