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ガイド

ブラウザ上でファイルを安全に扱うための実践的なガイドとインサイト。各記事から直接ツールへアクセスできます。

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Insights

Why Businesses Should Consider Local AI Over Cloud AI in 2026

Why on-device AI is emerging as an alternative for data control, cost, latency, and compliance—along with its honest limitations.

6分で読める2026/07/27
AI

How to Automatically Generate Word, Excel, PPT, and PDF with Claude: 4 Essential Document Skills

Learn how to automatically create and edit office documents using Claude's official document skills (docx, xlsx, pptx, pdf), along with best practices for handling sensitive files securely.

6分で読める2026/07/26
AI

What are Claude Skills? A Smarter Way to Delegate Repetitive Tasks to AI

How to assign specialized skills to AI for consistent results without repeating instructions every time, covering Claude Skills, practical use cases, and privacy.

5分で読める2026/07/26
AI

What is On-Device AI? How to Process PDF Summaries and Speech-to-Text Locally on Your PC

Understand the pros and cons of on-device AI running AI models directly inside your browser via WebGPU and WebAssembly.

5分で読める2026/07/26
Images

How to Remove an Image Background — With AI, In Your Browser, No Upload

How to remove the background from portrait or product photos with AI and save them as transparent PNGs — processed inside your browser, with no upload.

5分で読める2026/07/16
Images

Convert Dozens of Images at Once (as a ZIP, In Your Browser)

How to convert many images to another format at once, shrink their size, and download them as a ZIP — with parallel processing and resume, all inside the browser.

5分で読める2026/07/16
PDF

How to Add Page Numbers to a PDF (In Your Browser, No Upload)

How to stamp a page number on every page of a report or contract PDF — processed inside your browser, without sending the file to a server.

3分で読める2026/07/16
Media

How to Convert M4A or WAV to MP3 (In Your Browser, No Upload)

How to convert audio files between MP3, WAV, M4A, OGG, and more — transcoded directly inside your browser with FFmpeg.

4分で読める2026/07/16