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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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AI

Summarize and Question a Long PDF with AI (In Your Browser, No Upload)

How to summarize a PDF of dozens of pages with AI and ask it questions directly — analyzed inside your browser, without sending the document to a server.

5分で読める2026/07/16
Media

Turn a Meeting Recording into Notes Automatically (In Your Browser)

How to auto-transcribe a meeting or interview recording and summarize it with AI into meeting notes — processed in your browser by default.

5分で読める2026/07/16
Recovery

How to Try Repairing Corrupted Photos and Documents (In Your Browser)

How to diagnose and attempt to repair PNG/JPG photos or DOCX/XLSX documents that suddenly won't open — processed 100% inside your browser, never uploaded.

5分で読める2026/07/16
Images

How to Reduce Photo File Size — Without Wrecking Quality (In Your Browser)

How to shrink large photos that keep hitting email and upload limits, with minimal quality loss — by changing format and quality, all inside your browser.

4分で読める2026/07/16
PDF

Can You Convert a PDF to Word? What Works in the Browser — and What Doesn't

Why converting a PDF into an editable Word file is so tricky, and the practical way to safely extract or summarize its text right in your browser.

5分で読める2026/07/16
PDF

How to Password-Protect a PDF (and Unlock It) in Your Browser

How to add an open password to sensitive PDFs, and remove it again with a password you know — with the file and password never leaving your browser.

4分で読める2026/07/14
Media

How to Turn a Video into a GIF (In Your Browser, No Upload)

How to turn short video clips into looping GIFs — converted inside your browser without uploading the video. Includes when a GIF fits and when a video is better.

4分で読める2026/07/14