Skip the Filler,
Watch What Matters

Auto-detects the anime & episode you're watching and shows a floating badge FILLER, CANON, or MIXED right on the page. No more tab-switching and manual searching.
Fully open source. Works on any streaming platform.

1Visit any anime site
2Extension auto-detects
3See the verdict
🎬New Tab
🔒|
Navigate to an anime site…

Built for how you actually watch

Auto-detection, zero setup, no lists to bookmark.

01

Auto-Detect

Reads the anime and episode from the URL, page title, and DOM no manual input needed.

02

On-Page Badge

A floating FILLER / CANON / MIXED badge appears right on the page. Draggable and dismissible.

03

MAL Score

MyAnimeList rating, member count, and airing status visible without leaving your tab.

04

Manual Search

Type any anime and episode in the popup when auto-detect can't pick it up.

How It Works

Here's what happens under the hood in milliseconds.

anime-filler-checker — URL Analysis
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Frequently Asked Questions

Everything you need to know about skipping anime filler.

Does Anime Filler Checker work on Crunchyroll?

Yes. The Crunchyroll filler extension detects the anime and episode you're watching and overlays a badge FILLER, CANON, or MIXED directly on the Crunchyroll page. It acts as a Crunchyroll filler labeler so you never have to leave the tab to check.

Does it work on 9anime and other streaming sites?

Yes the extension works on any anime streaming site including 9anime, GogoAnime, Zoro, and more. It reads the episode from the URL and page title, so it adapts to whatever site you watch on.

Which Naruto episodes are filler?

Naruto has a notoriously high filler rate around 41% of episodes. With Anime Filler Checker installed, each Naruto episode is automatically labeled when you open it. You can also open the popup to look up any episode in the Naruto filler list manually.

What is a filler episode in anime?

A filler episode is one not based on the original manga. Studios produce them to avoid overtaking the source material. Filler episodes don't advance the main story and can generally be skipped though some are worth watching for character moments.

How do I know if an episode is filler without Googling it?

That's exactly what Anime Filler Checker solves. Once installed, it auto-detects the episode and shows its status on-screen no tab-switching, no spoiler risk from search results. It's a live filler detector built into your browser.

Does it support One Piece and Bleach?

Yes. One Piece filler episodes and Bleach filler arcs are fully supported. Both series have large filler stretches, so the badge is especially useful there. In total, 500+ anime are supported including Dragon Ball Z, Boruto, Black Clover, and Fairy Tail.

Is the extension safe to install?

Yes. Anime Filler Checker is fully open source you can read every line of code on GitHub. It requests no personal data, collects no analytics, and has no ads. It's listed on the Chrome Web Store and Firefox Add-ons.

Can I use it without installing a browser extension?

Yes! There's now a Stremio addon that shows filler badges directly in the episode list no browser extension needed. Just copy the manifest URL into Stremio's addon settings and you'll see the filler status for every episode.

Dev Log

Behind the scenes

Honest updates on what I'm working on, what's hard, and what's next.

Maintenance

Stremio Addon — Temporary Maintenance

The Stremio addon is temporarily paused. I've noticed it was receiving a huge volume of requests for non-anime titles — over 5 million requests in the last 30 days, most of it wasted on titles that aren't even anime. That is insane!

I'm using this downtime to wire up a proper caching system, add negative caching for non-anime titles, and fix edge caching so the same episode request is only processed once. After it works properly it will be back again. Sorry for the delay in advance! The browser extension stays unaffected.

Work in Progress

Netflix Support — Why It's Taking a While

Currently AnimeFillerChecker does not work with Netflix. Netflix is a bit weird about this — in order to achieve it I need to deeply inspect DOM elements, but even that's not enough because anime names are localized. For example, if you're watching My Hero Academia but your Netflix is set to Turkish, you get the Turkish title instead of the original.

After retrieving the localized name I'd need to reverse-lookup the original title via the Jikan API, then match it on AnimeFillerList.com. But even then it's not enough — episode titles are localized too, and I can't trust episode numbers because Netflix doesn't always label seasons as 1, 2, 3. Sometimes they use arc names instead. Go to One Piece on Netflix and you'll see “Egghead Arc Part 1” rather than a season number.

So I'd need to resolve episode numbers from titles, across multiple languages, and I'm not sure how many languages Jikan supports. I'm still figuring this out — I know it's possible, it just needs careful work.

If you've solved something like this before or have ideas, I'd genuinely love to hear it.

Contact

Say something

Bug report, feature idea, or just a message all welcome.