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Your Browser Privacy Toolkit
Lesson 3 of 5

Install a Manifest V3 ad blocker

Why the engine matters.

5 min read

Manifest V3 is the current extension API in Chromium browsers. It restricts how extensions intercept network traffic, which means older blockers either need to be rewritten or replaced.

NovaBlock is built on Manifest V3 from the ground up: it's fast, low memory and future-proof.

Key takeaways

  • Manifest V3 is the current standard in Chromium.
  • Pick a blocker built for MV3, not patched into it.
  • Firefox keeps WebRequest support, so MV2 blockers also work there.