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メタデータを検証 PDFを圧縮 PDFソフトウェア

PDF検証ツール

構造的完全性、標準準拠、潜在的な問題についてPDFファイルを検証します。無料かつ匿名です。

PDFをここにドロップ

またはクリックして参照

最大50MBのPDFファイル

PDF分析中...

メタデータを安全に抽出中

分析完了！

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発見できること：

作成日と変更日 著者と使用ソフトウェア AI生成検出 編集履歴タイムライン
ファイルは保存されません 100%匿名 即座に結果

使い方

1

PDFをアップロード

ドラッグ＆ドロップまたはクリックしてファイルを選択

2

即座に分析

数秒でメタデータを抽出

3

詳細結果を表示

作成日、編集履歴、AI検出など

Pages

Version

Format

Size

Security Status

JavaScript
Embedded Files
AI Content
View Full Report

Validation Results

Upload a PDF to see validation results here instantly.

✓ Structure integrity

✓ Security analysis

✓ Standards compliance

Detailed Results

Full Report

Validation Checks

Document Information

Title
Author
Created
Modified
Subject

Technical Details

Software
Producer
Encrypted
Tagged
Fonts
Images

Security & Integrity

JavaScript

Embedded Files

AI Content

What's Next?

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Verify if your PDF has digital signatures and check their validity.

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Optimize Size

Reduce your PDF file size without losing quality. Choose from multiple compression levels.

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AI Detection

Deep scan your PDF for signs of AI-generated content and LLM tool fingerprints.

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検証機能

構造検証

内部PDF構造とオブジェクトの整合性のチェック

標準準拠

PDF/A、PDF/X、その他の標準準拠のチェック

エラー検出

破損、欠落オブジェクト、潜在的な問題の識別

Frequently Asked Questions

What does the PDF validator check?
Our validator checks PDF structure integrity, verifies the file is not corrupted, validates internal object references, checks for JavaScript or suspicious content, and provides details about the document's metadata, fonts, images, and security settings.
Is my PDF file stored after validation?
No. Your PDF is processed in memory and immediately discarded after validation. Only the extracted metadata is stored so you can review the results later via the share link.
What is the maximum file size?
You can validate PDF files up to 100 MB. For larger files, consider optimizing them first using our PDF optimizer tool.
Does it check for PDF/A compliance?
The validator identifies PDF version and checks for tagged content, embedded fonts, and other indicators of standards compliance. For a full PDF/A conformance report we recommend also checking with an industry-standard tool like veraPDF.

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