FediData: Multi-Modal Fediverse (Mastodon) Dataset

A Mastodon (Fediverse) dataset of 725,282 posts from 64,345 users across 493 instances, collected by Gao et al. for CIKM 2025. Each record contains post text, image URLs, and following/follower edge relationships with a 12,548-user manual bot/human/unclassifiable label subset. The dataset is notable for its multilingual corpus with 92.8% image attachment rate and 4-way bot classification scheme across a decentralized federated network. Intended for research into bot detection, decentralized social network structure, and multi-modal content analysis.

#Bot label#Cikm#Decentralized#Follower network#Multimodal

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Analytics

The interactive network needs JavaScript.

· graph.json

The full graph has 64,345 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.

64.3K
Nodes
1.9M
Edges
4.71e-04
Density
51
Components
-0.08962
Assortativity
34.6%
Reciprocity
5.6K
Bridges
Most central nodes
4fadfc94@infosec.exchange0.08632
44c7aa8e@mastodon.social0.07388
e18d2519@infosec.exchange0.07177
f7e453cc@mastodon.art0.0624
ffc4c44c@framapiaf.org0.0582
943b88ff@infosec.exchange0.05553
4bc23fca@infosec.exchange0.05276
43de0b4c@infosec.exchange0.04807
c82d921e@w3c.social0.04638
ef032403@mastodon.social0.04401
Content metrics

725,282 records scored · min–maxmean ± 0.675 σ (the interquartile range if the values are roughly normal)mean

x indexμ 8.034 ± 5.824
min 0max 19
52K
Text-only records
673.2K
With media
92.8%
Visual density
8.7
Flesch–Kincaid grade
US school grade level
11.8
Automated readability index
Frequent terms
artlikenewtimemastoarttwitterdaytodaygoodgotworkgamedonlittlensfwyearknowlovethinkpostpeoplefurryhappyusewayphotographylolidigitalartweekoldgoingfundrawingyearslookworkinggreatgamedevneedbit2024rightcommissionthingsillustrationfindphotolotopenfinally
Topic clusters

Topic 0

happy
new
thing
time
know
think
sticker
ready

Topic 1

art
mastoart
digitalart
sketch
draw
illustration
artist
fanart

Topic 2

new
use
work
file
support
linux
code
like

Topic 3

faire
être
bien
savoir
bon
que
nouveau
libre

Topic 4

mal
sehen
finden
schön
berlin
mensch
gaan
bild

Topic 5

photography
morning
photo
day
today
nature
flower
sunset

Topic 6

pixivsketch
pixiv
オリジナル
女の子
hentai
ポケモン
ケモノ
loli

Topic 7

game
gamedev
indiedev
indiegame
godotengine
work
steam
play

Topic 8

mal
finden
deutschland
einfach
eigentlich
sehen
schön
bahn

Topic 9

cat
catsofmastodon
caturday
dogsofmastodon
mastodon
dog
kitten
mosstodon

Topic 10

nsfw
loli
lolicon
shota
shotacon
futanari
nude
hentai

Topic 11

book
read
year
day
story
time
week
new
Show all 14 topics

Topic 12

nsfw
furry
loli
nude
nudity
porn
shota
gay

Topic 13

food
chicken
dinner
cook
bake
weekend
bread
good
Top hashtags
#mastoart26.2K
#art22.2K
#digitalart10.7K
#photography10.3K
#furry10.1K
#gamedev9.9K
#nsfw9.7K
#loli9.5K
#illustration7K
#furryart6.8K
#shota6.6K
#indiedev5.4K
#oc5.3K
#pixelart5K
#caturday4.5K
#fanart4.5K
#catsofmastodon4.3K
#drawing4K
#sketch3.8K
#3d3.8K
Top emoji
🔗9.3K
🐦8.5K
😂4K
😅3.5K
👉3K
🔥2.8K
🎉2.7K
😊2.5K
😍2.5K
🥰2.4K
👀2.2K
🤔2.2K
😁2.2K
🤣2.1K
👇2K
872.2K
Images

Computed over the full corpus.

Record

Catalog key
fedidata
Authors
Gao, Min; Du, Haoran; Wen, Wen; Duan, Qiang; Wang, Xin; Chen, Yang
Year
2025
Source paper
FediData: A Comprehensive Multi-Modal Fediverse Dataset from Mastodon
DOI / arXiv
10.1145/3746252.3761634
License
Creative Commons Attribution 4.0 International (CC BY 4.0) (CC-BY-4.0)
Records
725,282
Nodes
64,345
Edges
1,948,528 (directed)
Nodes are
user
Edges are
follow
Attributes
nodes have attributes; edges have attributes
Text corpus
post text
Languages
de, en, es, fr, ja, nl
Collected
2023-2024 (2020s)
Tasks
Bot detection inferred
From the graph: link prediction, community detection
Region
Global (inferred: the platform is used worldwide)

Provenance

Originally published at
https://zenodo.org/records/15621244 link checked

Citations

FediData: A Comprehensive Multi-Modal Fediverse Dataset from Mastodon
Min Gao, Hao-Ran Du, Wen Wen, Qiang Duan, Xin Wang
Journal Article · International Conference on Information and Knowledge Management · 2025

3
citations
few citations so far
0
influential citations
0% of all citations

Cited by

Citation data from Semantic Scholar, retrieved 2026-10-19.

How to cite

BibTeX

@misc{echo2026,
  title  = {ECHO: Exploratory Compendium of Humanity Online},
  author = {Switzer, Braden and Zafarani, Reza},
  year   = {2026},
  url    = {https://echo.directory},
  note   = {Syracuse University}
}

@inproceedings{gao2025fedidata,
  title     = {{FediData: A Comprehensive Multi-Modal Fediverse Dataset from Mastodon}},
  author    = {Min Gao and Haoran Du and Wen Wen and Qiang Duan and Xin Wang and Yang Chen},
  year      = {2025},
  booktitle = {Proceedings of the 34th ACM International Conference on Information and Knowledge Management (CIKM'25)},
  pages     = {6372--6376}
}

APA

Switzer, B., & Zafarani, R. (2026). ECHO: Exploratory Compendium of Humanity Online [Data repository]. Syracuse University. https://echo.directory

Gao, M., Du, H., Wen, W., Duan, Q., Wang, X., & Chen, Y. (2025). FediData: Multi-Modal Fediverse (Mastodon) Dataset [Data set]. https://doi.org/10.1145/3746252.3761634

MLA

Switzer, Braden, and Reza Zafarani. ECHO: Exploratory Compendium of Humanity Online. Syracuse University, 2026, echo.directory.

Gao, Min, et al. FediData: Multi-Modal Fediverse (Mastodon) Dataset. 2025, doi.org/10.1145/3746252.3761634.

BibTeX · RIS · CSL-JSON

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