ResLock for YouTube

Auto-applies your preferred YouTube playback quality so you spend less time switching resolutions manually.

Published by Memo · Updated 2026-03-02

Introduction Summary

ResLock for YouTube applies your preferred default playback quality when videos load on supported YouTube pages, helping keep your viewing quality consistent with fewer manual changes.

Section Highlights

  • Set a preferred default YouTube quality
  • Apply quality preference on video load
  • Fallback when preferred quality is unavailable
  • Supports desktop and mobile YouTube web
  • ExtPay integration for paid feature gating

Key Takeaways

  • Designed for Streaming, YouTube, Quality workflows.
  • Keeps repetitive quality or browser adjustments consistent.
  • Provides a lightweight, focused extension experience.

FAQ

Does ResLock force 1080p or 4K on every video?

No. ResLock applies your preferred default quality only when that quality is available for the current video and network conditions. This setup usually improves consistency across sessions and reduces repeated manual adjustments for everyday viewing.

Which YouTube domains are supported?

ResLock runs on https://www.youtube.com/* and https://m.youtube.com/* as defined in extension host permissions. This setup usually improves consistency across sessions and reduces repeated manual adjustments for everyday viewing.

How are paid features managed?

Paid feature checks are handled via ExtPay using https://extensionpay.com/* endpoints. This setup usually improves consistency across sessions and reduces repeated manual adjustments for everyday viewing.

Does ResLock use a custom tracking backend?

No. This project does not use a custom ResLock-owned backend for user tracking. This setup usually improves consistency across sessions and reduces repeated manual adjustments for everyday viewing.

More extension pages are coming soon.

References

Author & Publish Metadata

Author: Memo · Publish Date: 2026-03-02