Tools

Japanese-Western Calendar Converter

Convert between Japanese era dates and Western dates

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

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