Printguard

Compare your PDFs.

Choose a trusted export and a new version. Inspect every changed page, check required text, and keep a report of what changed.

选择自己的两份 PDF，在浏览器内比较并下载结果。

Your files stay in your browser.No PDF is uploaded or stored on a server. The comparison and report generation run on this device.

The trusted version to compare against.

No PDF selected.

The export you want to check.

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PDF files only. Up to 20 MiB and 50 pages per file.

Optional checks

One phrase per line. Every phrase must appear in the new PDF. English and Chinese are supported.

0–1. Lower values detect smaller color differences. Default: 0.1.

Choose both PDFs to start.