PDF 涂黑与马赛克脱敏
在设备上永久移除所选 PDF 文字、图像像素和图形。
上传文件
Drag and drop files here, or click to browse
关于此工具
选择区域或文字匹配项。本地引擎会永久移除所选文字、重叠的图像像素及相交的图形，再填充纯色。除非将所有页面栅格化，其他文字仍可选取。模糊和马赛克不用于永久删改。
新文件会清除旧版本、未使用对象、元数据、附件、书签、批注、链接和表单，并使数字签名失效。画笔可能移除附近内容。搜索仅查找可提取的文字，不执行 OCR，也不跨行匹配；扫描件应手动选择区域。未选中的副本可能保留。分享前请检查下载文件的每一页。
如何使用
Upload PDF
Choose a PDF. Decrypt password-protected files first and keep the original separately.Mark Sensitive Areas
Use rectangles for precise selection or a brush for larger areas. Check every relevant page.Preview
Choose a solid black or white fill and review your selections. Optional full-page rasterization removes all selectable text.Apply and Review
Apply permanent redaction, download the new PDF, and inspect every page before sharing.
使用场景
Document Sharing
Business Records
Scanned Documents
常见问题
Yes. Export applies content removal and writes a new PDF with old revisions and unused objects discarded. Other unselected occurrences can remain, so review every page.
No. These effects retain visual information. Permanent redaction uses a solid fill after removing content.
Metadata, attachments, bookmarks, annotations, links and forms are removed. Touched vector objects may disappear beyond the selection boundary. Digital signatures are invalidated.
Use manual rectangles for scans. Text search and automatic patterns only find extractable text and do not run OCR.