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Martin Kalfatovic✓

Mastodon @udcmrk@mas.to

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🔒 Paid proposals held safely in escrow — released only when the work's approved.

Followers

214

Account age

3 yrs

🧰 Free analysis for Martin Kalfatovic

🕵️ Fake follower check 📊 Engagement rate 💰 What they charge

Known for

“IMMARKUS” presentation from - @hildedeweerdt & @aboutgeo at the @IIIF Showcase #IIIF / Learn more about IMMARKUS here https://github.com/rsimon/immarkus/wiki

9 views “IMMARKUS” presentation from - @hildedeweerdt & @aboutgeo at the @IIIF Showcase #IIIF / Learn more about IMMARKUS here https://github.com/rsimon/immarkus/wiki

Jules Schoonman and Bert Spaan presenting on #Allmaps and #IIIF at the @IIIF Showcase in Amsterdam / learn more about the IIIF/Allmaps Partnership here: https://allmaps.org/iiif-partnership/

8 views Jules Schoonman and Bert Spaan presenting on #Allmaps and #IIIF at the @IIIF Showcase in Amsterdam / learn more about the IIIF/Allmaps Partnership here: https://allmaps.org/iiif-partnership/

Caitlin Perry, @IIIF Communications and Community Coordinator giving an overview of IIIF Showcase featuring a key Dutch player, Nijntje (aka Miffy) with Bugs Bunny #IIIF

7 views Caitlin Perry, @IIIF Communications and Community Coordinator giving an overview of IIIF Showcase featuring a key Dutch player, Nijntje (aka Miffy) with Bugs Bunny #IIIF

“Slow looking in the Imaginarium with Micrio” - Erwin Verbruggen & Marcel Duin, Q42 IIIF Showcase #IIIF“Slow looking in the Imaginarium with Micrio” - Erwin Verbruggen & Marcel Duin, Q42 at the @IIIF Showcase #IIIF / learn more about Q42 at https://www.q42.nl/

4 views “Slow looking in the Imaginarium with Micrio” - Erwin Verbruggen & Marcel Duin, Q42 IIIF Showcase #IIIF“Slow looking in the Imaginarium with Micrio” - Erwin Verbruggen & Marcel Duin, Q42 at the @IIIF Showcase #IIIF / learn more about Q42 at https://www.q42.nl/

📊 Post engagement

Avg engagement / post

1.9%

Engagement vs followers

Nov 2022

On Mastodon since

🔥 Top post: “IMMARKUS” presentation from - @hildedeweerdt & @aboutgeo at · 9 likes + reposts

📊 Activity & format

Posting cadence

1.7 / week

A lower-frequency account — each post lands with more weight.

Content mix

Mostly images

Recent: 0 text · 12 image · 0 video.

Follower / following

0.6×

Follows 370 back. A more reciprocal / networked account.

Recent posts

View on Mastodon ↗

🔥 Top post “IMMARKUS” presentation from - @hildedeweerdt & @aboutgeo at the @IIIF Showcase #IIIF / Learn more about IMMARKUS here https://github.com/rsimon/immarkus/wiki ★ 9

Good to see @mia (even if virtual) for the Library of Congress "AI Literacy & Learning" summit #AI4LAM ★ 1

A quick summary and thanks for a great 2026 @IIIF Annual Conference and Showcase in the Netherlands https://www.linkedin.com/posts/martinkalfatovic_thanks-to-all-the-presenters-and-attendees-ugcPost-7469723544634150912-Hmt9/?utm_source=sh… ★ 4

Special thanks to the sponsors of the 2026 IIIF Annual Conference: Kakadu Software (Platinum), 4Science (Welcome Drinks), digirati (Gold), OCLC (Scholarship Sponsor), Cogapp (Silver), Micr.io Powered by Q42 (Silver), From the Page (Silver… ★ 1

We had a great reception last night at @Naturalis for all 2026 all @IIIF Conference attendees; thanks to Kakadu Software (https://kakadusoftware.com/) for their Platinum Sponsorship of the event #IIIF ★ 3

Attendees of the 2026 @IIIF Conference taking a break and testing their geographic knowledge using the Allmaps Arcade #IIIF / Learn more about Allmaps at https://allmaps.org/ ★ 3

Thanks to Geertrui Verbraak from the @kbnationalebibliotheek for an inspiring opening talk at the 2026 @IIIF Annual Conference at Scheltema #IIIF

“From Silos to Synergy: IIIF as the Next Step for Museum Image Collections” - Rob Jacobs, Axiell #WoodWing #IIIF at the @IIIF Showcase ★ 1

“Slow looking in the Imaginarium with Micrio” - Erwin Verbruggen & Marcel Duin, Q42 IIIF Showcase #IIIF“Slow looking in the Imaginarium with Micrio” - Erwin Verbruggen & Marcel Duin, Q42 at the @IIIF Showcase #IIIF / learn more about Q42 … ★ 4

“Rijksmuseum & Change Discovery” Kelly Davis, Daan de Schepper and Minh Tran from the @Rijksmuseum at the @IIIF Showcase #iiif ★ 4

Jules Schoonman and Bert Spaan presenting on #Allmaps and #IIIF at the @IIIF Showcase in Amsterdam / learn more about the IIIF/Allmaps Partnership here: https://allmaps.org/iiif-partnership/ ★ 8

Caitlin Perry, @IIIF Communications and Community Coordinator giving an overview of IIIF Showcase featuring a key Dutch player, Nijntje (aka Miffy) with Bugs Bunny #IIIF ★ 7

🐘 Community & instance

Home server

mas.to

A large general-interest Mastodon server. On the fediverse the server a creator picks hints at their community — this one spans all topics.

✅ Link-verified

Verified link

Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.

On Mastodon since

Nov 2022

Joined in the Twitter-exodus wave of late 2022 — part of the migration that made Mastodon a real destination.

💡 Facts

🗓️Joined Mastodon in 2022 — 3 years ago.

👁️Averages 4 views per post.

📤Posts about 1.7× per week.

🕵️ Fake follower check

Estimated

89/100

Excellent Credibility score

99%

Real Real audience

Low Fake-follower risk

High Data confidence

Est. 99% real, active audience · Low fake-follower risk.
Strong engagement (~1.9% of followers engage each post) — an active, real audience.
Verified account.
Established account (3+ years old).

Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.

💚 Brand affinity

Estimated

Brands Martin Kalfatovic's audience is most likely to respond to — from detected sponsorships in this niche.

About

Managing Director for @IIIF / Nature: http://inaturalist.org/people/udcmrk | Professional Profile: https://www.udcmrk.org/ | Random thoughts here: https://www.udc793.org/ | opinions are mine (he/him)