PDFアナライザー
無料·登録不要·ファイルは端末の外に出ません
How to inspect a PDF in 3 steps
X-ray any document: what's inside, how it's built, and whether it's carrying anything unusual.
Upload the PDF
Drop the file in the box above. Parsing happens locally, in seconds.
Read the report
Page count, dimensions, version, encryption, fonts, images, and structural statistics — all on screen.
Act on what you find
Fix oversized scans, spot unembedded fonts, or verify encryption — with the right sibling tool.
Why analyze PDFs with AmiPDF
Diagnose before you fix — or before you trust.
設計からプライベート
処理はすべてブラウザ内で完結。アップロード・保存・共有は一切ありません。
登録不要・透かしなし
アカウント不要、メール不要、制限なし。出力は入力とまったく同じ。
Security at a glance
See instantly whether a file is encrypted, and what its structure contains — useful before opening documents from unknown sources.
どの端末でも動作
Windows、Mac、Linux、Android、iOSで同じ速さ — インストール不要。
When to analyze a PDF
Debugging a file that won't print, checking whether fonts will render on another machine, understanding why a “small” document is 80 MB, or inspecting a download before opening it. Analysis is the first step of informed PDF work.
The file is parsed in your browser and never uploaded.
Analyze PDFs on any platform
AmiPDFはブラウザで動作 — インストールも設定も更新も不要。
Windows
Chrome, Edge, Firefox
macOS
Safari, Chrome
Linux
Any modern browser
iOS
Safari on iPhone, iPad
Android
Chrome, Samsung Internet
Frequently asked questions
What exactly does the report include?
Page count and per-page dimensions, PDF version, encryption status, font inventory with embedding info, image count, and object-level statistics.
Does the analyzer produce a file?
No — it's read-only. The findings appear as a report on the page; your original file is never modified.
Can it tell me why my PDF is so large?
Yes, directionally — a large image count or many embedded font programs are the usual suspects, and both show in the report.
Does it detect malware?
No — it inspects structure, not threat signatures. Treat it as an X-ray, not an antivirus. For untrusted files, use a real scanner.
Can I analyze encrypted PDFs?
The report shows encryption status and metadata visible without the password. Deep analysis needs the unlocked file.
Is my document uploaded for analysis?
No. Parsing runs entirely in your browser.
関連するPDFツール
続けて — PDF作業に必要なすべてが、無料・ローカル実行。