ガイド
日々のPDF作業に役立つ、プライバシーを意識した実践ガイドです。
How to merge PDF files into one document (free, no upload)
Step-by-step guide to combining PDFs in your browser: order pages, avoid common mistakes, keep quality and keep your documents private.
ガイドを読む →How to compress a PDF without losing quality
Why PDFs get large, which compression level to choose, and how to shrink a PDF for email or upload forms while keeping it readable.
ガイドを読む →Are online PDF converters safe? What happens to your files
How most online PDF tools work, what to check in their privacy policy, and how browser-based tools avoid uploading your documents at all.
ガイドを読む →How to sign a PDF without printing and scanning
Draw, type or upload a signature and place it on any PDF in your browser. What a simple signature is good for and when you need more.
ガイドを読む →How to turn a scanned PDF into searchable, copyable text
Use OCR to extract text from scans, create a searchable PDF, and get the best accuracy from your scans.
ガイドを読む →How to convert iPhone HEIC photos to PDF
Why websites reject HEIC photos and how to turn them into a PDF that opens everywhere, without uploading your pictures.
ガイドを読む →How to password protect a PDF (and remove the password later)
Encrypt a PDF with a password in your browser, choose a strong password, and unlock files when you no longer need protection.
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