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！
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
PDF is Valid
Issues Found
Validation Results
Upload a PDF to see validation results here instantly.
✓ Structure integrity
✓ Security analysis
✓ Standards compliance
Detailed Results
Full ReportValidation 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?
Check Signatures
Verify if your PDF has digital signatures and check their validity.
Try itOptimize Size
Reduce your PDF file size without losing quality. Choose from multiple compression levels.
Try itAI Detection
Deep scan your PDF for signs of AI-generated content and LLM tool fingerprints.
Try it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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