All Tools

3D Surface Chart

Visualize 3D data of "row × column × value" as a color-mapped surface resembling a topographic map

Bar Chart Cross-Filter

An interactive cross-filter dashboard that links multiple bar charts for intuitive data exploration

Draw-to-Answer Line Chart

An interactive quiz tool where you predict time-series trends by drawing on a line chart

Interactive Chart Builder

Build interactive, animated charts from six templates, including streamgraphs, bee swarm plots, and Venn diagrams

Matrix Table Chart

Visualize a crosstab as a heatmap, mosaic, chord diagram, and more without converting it to a list

Parallel Sets

Visualize categorical combinations and counts as ribbons across parallel axes

RAWGraphs2

Create diverse charts with ease

Sankeymatic

Create Sankey diagrams with ease

Race Chart Builder

Build animated race charts in five templates to show ranking changes over time

Cytoscape

Web version of Cytoscape

Data Illustrator

Create diverse charts with ease

Gephi Lite

Create network graphs with ease

Parallel Coordinates

An interactive chart specialized for comparing and exploring multidimensional data

Vega Editor

Write visualization specs in JSON to render interactive graphs and charts in real time

Voyager2

A visualization tool for Exploratory Data Analysis (EDA)

Word Cloud

Word cloud tool optimized for Japanese text

QuickChart UI

Generate chart images from URLs alone

kepler.gl

Visualization and exploration tool for large-scale geospatial data

Tilegrams

A tool for creating tile maps

Choosing a map projection

Pick a map projection by deciding which property to preserve: angle, area, or distance

ADS-B / AIS Visualization

Easily create videos from aircraft and ship movement data

i want hue

Generate distinguishable color palettes

Leonardo

An open-source tool provided by Adobe

Color Brewer

Simulate color scheme selection on maps

JSON Crack

Visually explore JSON data structures in your browser

OpenRefine

Data cleansing and transformation tool for tabular data

Shift JIS ⇄ UTF-8 文字コード変換ツール

Convert character encoding between Shift JIS and UTF-8

Tabula PDF

Extract table data from PDFs

Text Entity Extraction Tool

青空文庫ルビ削除ツール

Remove ruby annotations and metadata from Aozora Bunko novels

(Geo) DataMerger

Easily merge geographic data with thematic data

GeoJSON.io

Trace map tiles to create GeoJSON

GTFSネットワークデータ変換

Convert GTFS transit data to network data

Japanese-Western Calendar Converter

Convert between Japanese era dates and Western dates

Mapbox Classic スタイル生成

Mapbox map tiles for use with Kepler.gl and Foursquare Studio

Mapshaper

Edit and convert geographic data

SVG ⇄ GeoJSON 変換ツール

Convert between GeoJSON and SVG formats

バッファ生成ツール

Easily create buffer zones with a specified radius in your browser

住所 → 緯度経度 変換ツール

Geocoding tool

座標系 変換ツール

Convert coordinates of geographic feature files

緯度経度フォーマッター

Easily convert latitude/longitude data precision