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shiva9ro/README.md

Takeshi Kashiwagi

I build practical software that removes friction from everyday work and life.

My projects range from Windows document-processing tools and Android automation to self-hosted web apps and calendar integrations. I value simple interfaces, local or self-hosted processing, and software that remains useful in restricted or offline environments.

Projects

  • Office PDF Binder A Windows desktop app that combines PDF, Word, Excel, PowerPoint, and image files into a single PDF, with page organization, bookmarks, headers, footers, and batch processing.

  • SSB Login Helper An Android accessibility-based helper that streamlines multi-step login flows in a specific Soliton SecureBrowser Pro environment while keeping credentials encrypted on the device.

  • TimeTree to Google Calendar A Python tool that incrementally synchronizes TimeTree events with Google Calendar, designed to connect family schedules with Alexa routines from a Raspberry Pi.

  • ToggleList A self-hosted shopping-list PWA for households, built with React, Cloudflare Workers, D1, and Access, with synchronized state across family devices.

Technical interests

  • Python and Windows desktop applications
  • PDF and Microsoft Office automation
  • Android and accessibility-based automation
  • React, TypeScript, PWAs, and self-hosted web applications
  • Cloudflare Workers, D1, and access-controlled services
  • Raspberry Pi and scheduled background workflows
  • pandas, SQL, PostgreSQL, GIS, and geospatial data processing
  • Local government systems and digital transformation
  • Software for restricted, privacy-conscious, or offline environments

Certifications

  • Registered Information Security Specialist (RISS), Japan
  • Applied Information Technology Engineer, Japan
  • Fundamental Information Technology Engineer, Japan

日本語

日常の仕事や暮らしにある小さな手間を減らす、実用的なソフトウェアを開発しています。

Windows向け文書処理ツール、Androidの操作支援、セルフホスト型Webアプリ、 カレンダー連携など、身近な課題を解決するために必要な技術を組み合わせています。 分かりやすい操作性、ローカルまたは自前の環境で扱えること、制限環境や オフライン環境でも役立つことを大切にしています。

主なプロジェクト

  • Office PDF Binder PDF・Word・Excel・PowerPoint・画像をまとめ、ページ編集やしおり、ヘッダー・ フッター、フォルダー単位の一括処理まで行えるWindowsアプリです。

  • SSB Login Helper 特定のSoliton SecureBrowser Pro環境における複数段階のログイン操作を支援する Androidアプリです。認証情報は端末内で暗号化して保存します。

  • TimeTree to Google Calendar TimeTreeの予定をGoogleカレンダーへ差分同期し、Raspberry Piを介して Alexaの定型アクションでも利用できるようにするPythonツールです。

  • ToggleList 家族間で買い物の状態を共有できるセルフホスト型PWAです。React、Cloudflare Workers、D1、Accessを使用しています。

自治体業務、固定資産税システム、庁内DX、文書処理、データ処理にも継続して 取り組んでいます。特に、LGWANなどの制限環境や、非エンジニアが日常業務で 使えるツールに関心があります。

Popular repositories Loading

  1. OfficePDFBinder OfficePDFBinder Public

    Merge and organize PDF, Word, Excel, and PowerPoint files into a single PDF on Windows.

    Python 1

  2. timetree-to-gcal timetree-to-gcal Public

    Incrementally sync TimeTree events to Google Calendar for Alexa routines, with Python and Raspberry Pi/systemd.

    Python 1

  3. ToggleList ToggleList Public

    Self-hosted reusable shopping-list PWA for Japanese households, built with React, Cloudflare Workers, D1, and Access.

    TypeScript 1

  4. shiva9ro shiva9ro Public

  5. SSBLoginHelper SSBLoginHelper Public

    Android helper app that automates login to Soliton SecureBrowser Pro (SSBPro) mobile and desktop sites.

    Kotlin

  6. Files-shiva9ro Files-shiva9ro Public

    Forked from files-community/Files

    Files (shiva9ro): Unofficial Files v4.3 fork with native OLE drag-and-drop support for UAC-disabled environments.

    C#