An overview of my past projects and activities. Part of my portfolio is also
published on
illisible.net
(look at the other profiles too). Contact me for more information.
⚠️ Work in progress during April-May 2026. I'm trying to document past
projects with screenshots, tags and descriptions.
Sort and filter in Hugging Face dataset viewer
Hugging Face 2024 Python Svelte TypeScript
Awesome Parquet, a curated list of resources about the Parquet file format
Personal projects 2025 Parquet
Hierarchical map of scientific fields
Moritz Stefaner 2018 D3.js JavaScript SVG Treemap
Interactive blog post about virtual scroll and large tables
Hyperparam 2026 Accessibility Hard problem JavaScript Performance React Table TypeScript UI Writing
Distribution of votes along the left-right scale in France, 2024
Personal projects 2024 Elections JavaScript Observable Plot
Tool to find regional Foursquare places data files on a map
Personal projects 2025 Map Observable Plot
Prepare an offline geocoder (Pelias) with data for Brazil
Undisclosed contractors 2026 Geocoding
Wind effect with particles flowing to the right or left
Personal projects 2024 Context 2D D3.js JavaScript Observable
Classification of a cycling race, highlighting the performance of young Seixas
Personal projects 2025 Observable Plot Sport Wikidata
Prepare an offline geocoder (Pelias) with data for Brazil
Undisclosed contractors 2026 Geocoding
Getting started with cosovo, a CSV fetching and parsing library
Personal projects 2025 CSV Library TypeScript
Data format for cartograms
Personal projects 2025 Library
HighTable component for virtual scroll and large tables
Hyperparam 2026 Accessibility Library Performance React Table TypeScript UI
UI to filter datasets on Hugging Face
Hugging Face 2024 Python Svelte TypeScript
Video of a tennis match, projected on a 3D scene and synchronized with the ball tracking data
LIRIS 2020 3D JavaScript Sport Three.js Video
Cartogram of Bolivia, where the size of each department is proportional to the number of deputies
Personal projects 2025 Bolivia
Collaborative app to work on the partition of spaces
LIRIS 2020 JavaScript Node.js TypeScript Vue.js WebSocket
Evolution of Eigenfactor scores of journals
Moritz Stefaner 2018 D3.js JavaScript Parallel sets SVG
Network of scientific citations
Moritz Stefaner 2018 Chord diagram D3.js JavaScript SVG
Dataset viewer
Hugging Face 2022 2023 2024 Svelte SVG Table Tailwind CSS TypeScript
Evolution of voter participation in France, 2022-2024
Personal projects 2024 Context 2D Elections JavaScript Observable
Zoomable graph of citations between journals
Moritz Stefaner 2018 D3.js JavaScript Network diagram SVG
Cartogram of Bolivia, where the size of each department is proportional to the number of representatives
Personal projects 2025 Bolivia
CSV viewer for Source Cooperative
Radiant Earth 2025 CSV React Table TypeScript
Tool to find new Hugging Face users to follow
Hugging Face 2024 HF Space React TypeScript
Parquet viewer for Source Cooperative
Radiant Earth 2024 Parquet React Table TypeScript
Shifting Winds of French Politics: Mapping Right and Left Shifts in the 2024 vs. 2022 Elections.
Personal projects 2024 Context 2D D3.js Elections JavaScript Observable
Diff of two Parquet files on Hugging Face
Hugging Face 2025 Hyparquet Observable Parquet
Evolution of the extreme right vote in France, 2022-2024
Personal projects 2024 Context 2D Elections JavaScript Observable
Review about grid cartograms
Personal projects 2018 Observable Writing
Parquet metadata viewer
Hugging Face 2024 Hyparquet Parquet Svelte Tailwind CSS TypeScript
Dashboard about the activity of the Observable forum
Personal projects 2024 Observable Plot
Synchronized videos of a swimming race, projected on a 3D scene
LIRIS 2021 3D JavaScript Sport Three.js Video
Convert every dataset to Parquet
Hugging Face 2022 Parquet Python
Diff of two Parquet files on Hugging Face
Hugging Face 2025 Hyparquet Observable Parquet