Data Wrangling

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