比较PDF
找出两个PDF之间的差异
Original PDF
Upload the first document
Modified PDF
Upload the second document
浏览器处理
文件在您的浏览器中本地处理
自动删除
处理后文件自动删除
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随处可用
任何设备、任何浏览器，无需安装
如何比较PDF
- 1
选择或拖放两个要比较的PDF文件。
- 2
点击比较以分析文件之间的差异。
- 3
查看文档之间突出显示的差异。
Why Compare PDF Files?
Document versions multiply quickly. Compare PDFs to identify exactly what changed between drafts, revisions, or versions - essential for contracts, legal documents, and collaborative work.
Common Comparison Scenarios
- Contract Revisions: See exactly what terms were added, removed, or modified.
- Legal Documents: Track changes in court filings and legal agreements.
- Policy Updates: Identify what changed in updated policies or procedures.
- Report Versions: Compare drafts to see editorial changes.
Interpretation Guide
Green highlights: New content added. Red highlights: Content removed. Side-by-side view: Compare the same sections directly.
常见问题
How do I compare two PDF files?
Upload both PDF files and our tool analyzes them, highlighting differences. See text added, removed, or changed between versions.
What types of differences can this tool detect?
The tool detects text additions, deletions, and modifications. It works best with text-based PDFs rather than scanned images.
Is the PDF comparison tool free?
Yes, our PDF compare tool is completely free with no registration required.
Can I compare PDFs with different page counts?
Yes, compare PDFs with different page numbers. The tool matches pages and shows which pages are unique to each document.
Can I compare scanned PDFs?
For scanned documents, run OCR first to make text recognizable, then compare the resulting files for best results.
How are differences displayed?
Additions are highlighted in green, deletions in red, and modifications show both old and new text. Navigate page by page to review all changes.
Can I compare contract revisions?
Yes! This tool is perfect for comparing contract versions, legal documents, and any text-based documents where tracking changes is important.
Does it compare formatting changes?
The tool focuses on text content differences. Font, color, and layout changes may not be highlighted unless they affect the text content.
Can I export the comparison results?
You can view the comparison on screen with highlighted differences. Take screenshots or use browser print for a record of changes.
What's the maximum file size for comparison?
Each PDF can be up to 200MB. Processing happens in your browser, so performance depends on document complexity and your device.