免费 · PDF
PDF 涂黑脱敏.
永久涂黑 PDF 中的文字、号码和区域。搜索词语或模式，检查标记框，并验证没有残留内容。
20 MiB · up to 200 pages · processed in your browser, never uploaded. Each page with a box is rebuilt from pixels, so the hidden text, images and vectors are really deleted, not just covered. Pages without boxes stay unchanged.
使用方法: PDF 涂黑脱敏
输入数据或选择文件，调整设置并生成结果。复制或下载之前，请检查结果。
限制与支持格式
输入内容在您的设备上处理。
英语技术说明
20 MiB, 200 pages and 2,000 boxes. Search uses the embedded text layer: scanned pages need manual boxes or OCR PDF first. Redacted pages become images (110–300 DPI), so their remaining text is not selectable; links, form fields and comments on those pages are flattened.
Every page that has a box is rendered in your browser, the boxes are painted into the pixels and the page is rebuilt as a single image, so the covered text, images and vectors are deleted rather than hidden. Pages without boxes are copied unchanged. Title, author, subject and XMP metadata are removed by default; bookmarks, attachments and digital signatures are never carried over. After export the file is re-read: the tool confirms that no selectable text is left on redacted pages and lists any page where your search terms still appear.
Remove a name, an email address and an IBAN from a two-page statement before sharing it.