Free anime filler data

Every episode of 13 long anime, 4,076 in all, labelled filler, mixed, anime canon or manga canon. Download it as JSON or CSV and use it in your app, add-on, spreadsheet or research. It's free, and there's no key or sign-up.

Data as of Nov 3, 2026. The files update whenever the lists on this site do.

Files

Start with /data/shows.json: it lists every show with its counts and the links to its own files. /data/all.csv has every episode of every show in one file, with a show column.

The same files are also on Kaggle and Hugging Face, if that's where you work. This page always has the newest version.

Show	Episodes	Filler	JSON	CSV
One Piece	1,180	102	one-piece.json	one-piece.csv
Bleach	366	159	bleach.json	bleach.csv
Naruto Shippuden	500	191	naruto-shippuden.json	naruto-shippuden.csv
Naruto	220	91	naruto.json	naruto.csv
Black Clover	175	35	black-clover.json	black-clover.csv
Boruto	293	208	boruto.json	boruto.csv
My Hero Academia	170	3	my-hero-academia.json	my-hero-academia.csv
Dragon Ball Z	291	30	dragon-ball-z.json	dragon-ball-z.csv
Fairy Tail	328	50	fairy-tail.json	fairy-tail.csv
Dragon Ball	153	20	dragon-ball.json	dragon-ball.csv
Inuyasha	193	37	inuyasha.json	inuyasha.csv
Hunter x Hunter	148	2	hunter-x-hunter.json	hunter-x-hunter.csv
Jujutsu Kaisen	59	0	jujutsu-kaisen.json	jujutsu-kaisen.csv

What each episode has

Field	What it is
n	Episode number in the original Japanese broadcast order.
title	English episode title.
airdate	First Japanese air date (YYYY-MM-DD).
type	filler, mixed, anime-canon or canon (unknown if our two sources disagree and it is not settled yet).
arc	Story arc the episode belongs to.
tvmazeId	TVmaze episode ID, for joining with TVmaze data.

Each show's JSON file also has its counts, its filler share, the filler episode numbers, the date we last checked it and the sources behind the labels. What the labels mean:

canon: Straight from the manga. Watch it.
mixed: Some manga, some anime-only scenes. Keep it, or you lose part of the plot.
anime-canon: Not in the manga, but adapted from an official novel or one-shot.
unknown: Our two sources disagree or one is missing. Keep it until we settle it.
filler: Made up for the anime. Skip it and the story still makes sense.

How we decide each label, and every correction we've made, is on the method page.

Example

Fetch a show and list its filler episodes. The files allow requests from any website, so this works in a browser too:

const res = await fetch('https://fillerlists.com/data/one-piece.json');
const show = await res.json();
const filler = show.episodes.filter((e) => e.type === 'filler').map((e) => e.n);
console.log(show.name, filler);

Licence and credit

The data is free to use, change and share, including in commercial projects, under CC BY-SA 4.0. That's because it's built on TVmaze episode records and checked against Fandom wikis and Wikipedia, which use the same kind of licence.

If you use it, please:

credit FillerLists and its sources, with a link to this page,
link the licence and say if you changed the data,
share your version of the data under the same licence.

You can copy this credit line:

Anime filler data from <a href="https://fillerlists.com/data">FillerLists</a> and its sources, under <a href="https://creativecommons.org/licenses/by-sa/4.0/">CC BY-SA 4.0</a>.

Our episode notes, summaries and arc verdicts are not part of the dataset. The full source list for each show is on the credits page.

Found a mistake or need another show?

Tell us on the contact page. Corrections go into the lists on this site and into these files at the same time.