Stay Copyright-Safe. Explore Reaction Free.
A free Chrome extension that syncs YouTube reaction videos with anime on Crunchyroll. Creators react without showing copyrighted content — viewers watch both in perfect sync.
Everything you need for copyright-safe reactions.
A free Chrome extension that syncs YouTube reactions with Crunchyroll anime — no accounts, no servers, no limits.
Free Chrome Extension
Install from the Chrome Web Store and start watching synced reaction videos instantly. The extension detects [FREE_REACTION] metadata in YouTube descriptions and offers to open the anime in a side panel.
Automatic Sync & Drift Correction
The extension syncs Crunchyroll playback with the YouTube reaction video. It handles pause/play events and corrects drift so the anime and reaction stay perfectly aligned throughout the episode.
Copyright-Free for Creators
Creators only upload their reaction — face, voice, and commentary. No copyrighted audio or video touches YouTube. Viewers use their own Crunchyroll subscription, so nothing is redistributed. Your channel stays safe from DMCA takedowns.
Install from the Chrome Web Store and start watching synced reaction videos instantly. The extension detects [FREE_REACTION] metadata in YouTube descriptions and offers to open the anime in a side panel.
The extension syncs Crunchyroll playback with the YouTube reaction video. It handles pause/play events and corrects drift so the anime and reaction stay perfectly aligned throughout the episode.
Creators only upload their reaction — face, voice, and commentary. No copyrighted audio or video touches YouTube. Viewers use their own Crunchyroll subscription, so nothing is redistributed. Your channel stays safe from DMCA takedowns.
How it works
Whether you're a viewer or a creator, getting started takes just a few steps.
For Viewers
- 1
Install the Chrome extension
One click from the Chrome Web Store. No account needed.
- 2
Open a reaction video on YouTube
Find a video with [FREE_REACTION] metadata in the description.
- 3
Click "Watch with Anime"
The extension detects the metadata and shows a button to start synced playback.
- 4
Watch both in perfect sync
Crunchyroll opens in a side panel, perfectly synced with the reaction video.
For Creators
- 1
Record your reaction
Face and voice only — no copyrighted video or audio in your recording.
- 2
Upload to YouTube
Upload your reaction video to your YouTube channel as usual.
- 3
Add [FREE_REACTION] metadata
Add a metadata block to your video description with the episode URL and start time.
- 4
Share with your subscribers
Your viewers with the extension will see the "Watch with Anime" button automatically.
Creator guide: adding metadata
Add this block to your YouTube video description so the extension can detect and sync your reaction with the original episode.
YouTube Description Metadata
[FREE_REACTION] episode=https://www.crunchyroll.com/watch/GRDKJZ81Y/a-chance-encounter start_at=120 [/FREE_REACTION]
episode
The full Crunchyroll URL of the episode you're reacting to. Copy it directly from your browser's address bar while watching the episode.
start_at
The number of seconds into your YouTube reaction video where the episode actually starts playing. For example, if you have a 2-minute intro before pressing play on the anime, set start_at=120.
Tip: Finding the start_at time
Watch your own reaction video and note the exact second when you press play on the anime episode. That's your start_at value. You can see the timestamp in the YouTube player progress bar.
Our Roadmap
Working on new features
The Free Reaction roadmap is public and available to everyone. You can see what we are working on and what we are planning to work on. We are always open to feedback and suggestions.
- Crunchyroll Support
- Watch anime reactions synced with Crunchyroll episodes. Fully working and available now!
- Reacting in real-time
- Working on making this tool work in real-time. When creators are doing a live stream via YouTube and Twitch.
- Multiple pauses in the reaction video
- Adding the possibility to pause the video and play it many times in the reactions. So the creators can pause the video when they are talking.
- Allow reactions from Netflix
- Adding support to sync reactions with Netflix shows.
- Allow reactions from Prime Video
- Adding support to sync reactions with Prime Video shows.
- Allow reactions from Disney+
- Adding support to sync reactions with Disney+ shows.
- Allow reactions from YouTube
- Adding support to sync reactions with YouTube videos.
- New UI for the extension
- Working on a new UI for the extension side panel with improved controls and better sync visualization.
100% Free, for everyone.
No accounts. No servers. No subscriptions. Just install and go.
$0
Free Forever
Everything you need to watch and create synced reaction videos. No catch.
- Free Chrome extension — install from Chrome Web Store
- No account or sign-up required
- No server or backend needed
- Use your own Crunchyroll subscription
- Automatic sync between reaction and anime
- Side panel playback with drift correction
- Open source — community driven
Frequently asked questions
If you can't find what you're looking for, email me and I will get back to you.
What is Free Reaction?
Free Reaction is a free Chrome extension that syncs YouTube reaction videos with anime on Crunchyroll. Creators record their reaction (face/voice only, no copyrighted content), and viewers watch both streams in perfect sync.
How do I install it?
Just visit the Chrome Web Store, search for "Free Reactions", and click "Add to Chrome". One click, no account needed.
Do I need a Crunchyroll account?
Yes, viewers need their own Crunchyroll subscription to watch the anime side. The extension simply syncs your existing Crunchyroll playback with the YouTube reaction video.
How does the sync work?
When a viewer opens a YouTube reaction video that has [FREE_REACTION] metadata in the description, the extension detects it and offers to open the corresponding Crunchyroll episode in a side panel. It then syncs playback between the two, including pause, play, and drift correction.
How do creators add metadata?
Creators add a [FREE_REACTION] block to their YouTube video description with the Crunchyroll episode URL and a start_at timestamp (the point in their reaction where the episode begins). The extension reads this automatically.
What platforms are supported?
Currently the extension supports YouTube reaction videos synced with Crunchyroll anime. Support for Netflix, Prime Video, Disney+, and more platforms is on the roadmap.
Is it really 100% free?
Yes, completely free. No accounts, no subscriptions, no tokens, no limits. The extension is open source and community driven.
Is this safe from copyright claims?
Yes. Creators only upload their own reaction (face, voice, commentary) to YouTube — no copyrighted audio or video. The viewer's own Crunchyroll subscription plays the anime. Nothing copyrighted is redistributed.
Can I use this on other browsers?
Currently, Free Reaction is available as a Chrome extension. It also works on Chromium-based browsers like Edge, Brave, and Arc. Firefox support may come in the future.
Get started today
Dive into a world where creativity knows no bounds. With Free Reaction, you can express yourself freely while staying within copyright guidelines.
