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PDF加密,小编教你PDF文档怎么设密防止内容修改

更新时间：2026-08-23 10:17:39 | 编辑：心蛊 | 信息来源：互联网
PDF文档是现在最受欢迎的文档格式，但是为了防止文档被修改，内容被编辑我们还需要给PDF文件加密，可能网上有很多在线加密的，但是为了你的隐私，建议不要使用，推荐使用Adobe Acrobat给PDF文档加密，下面小编就介绍下具体方法。


PDF怎么设密码？

1、首先下载Adobe Acrobat软件，安装好之后打开PDF文件，然后点击“文件” → “属性”。 



PDF加密教程

2、点击“安全性”，选择“口令安全性”。 



PDF设密码

3、选择加密组件之后在把“要求打开文档的口令”选上，然后输入密码：******
 

PDF文档安全防护

4、确定后文件会有一把小锁显示。
 

5、关闭之后重新打开该PDF文档要求输入密码。
 

设置密码之后PDF文件就可以有效的防止打开或编辑了。

上一篇：PDF文件被加密无法编辑改内容怎么解决？

下一篇：win10系统笔记本屏幕亮度无法调节的解决方法


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  3. 控制器: /www/wwwroot/www.pjwan.com/lecms/control/show_control.class.php
  4. 日志目录: /www/wwwroot/www.pjwan.com/log/
  5. 当前页面: /www/wwwroot/www.pjwan.com/index.php
  6. 当前时间: 2026-08-23 10:17:37
  7. 当前网协: 216.73.216.20
  8. 请求路径: /rjjc/8779.html
  9. 运行时间: 2.6128
  10. 内存开销: 1.32 MB
  1. #0 [time:0.0002s] SELECT * FROM le_runtime WHERE k='cfg' LIMIT 1
  2. #1 [time:0.0001s] SELECT * FROM le_runtime WHERE k='website_group_ali213_pjwan_com' LIMIT 1
  3. #2 [time:0.0002s] SELECT id FROM le_website_group WHERE webdomain='ali213.pjwan.com' AND is_active=1 ORDER BY id ASC LIMIT 0,1
  4. #3 [time:0.0002s] SELECT id FROM le_website_group WHERE webdomain='ali213.pjwan.com' AND is_active=1 ORDER BY id ASC LIMIT 0,1
  5. #4 [time:0.0003s] SELECT id FROM le_website_group WHERE webdomain='ali213.pjwan.com' AND is_active=1 ORDER BY id ASC LIMIT 0,1
  6. #5 [time:0.0003s] SELECT * FROM le_runtime WHERE k='cate_67' LIMIT 1
  7. #6 [time:0.0002s] SELECT id FROM le_website_group WHERE webdomain='ali213.pjwan.com' AND is_active=1 ORDER BY id ASC LIMIT 0,1
  8. #7 [time:0.0004s] SELECT * FROM le_cms_article WHERE id=8779 LIMIT 1
  9. #8 [time:0.0002s] SELECT id FROM le_website_group WHERE webdomain='ali213.pjwan.com' AND is_active=1 ORDER BY id ASC LIMIT 0,1
  10. #9 [time:0.0002s] SELECT id FROM le_website_group WHERE webdomain='ali213.pjwan.com' AND is_active=1 ORDER BY id ASC LIMIT 0,1
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  13. #12 [time:0.0002s] SELECT * FROM le_cms_article_views WHERE id=8779 LIMIT 1
  14. #13 [time:0.0003s] UPDATE LOW_PRIORITY le_cms_article_views SET views=views+1 WHERE id=8779 LIMIT 1
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  28. #27 [time:0.0002s] SELECT * FROM le_runtime WHERE k='cate_85' LIMIT 1
  29. #28 [time:0.0002s] SELECT id FROM le_website_group WHERE webdomain='ali213.pjwan.com' AND is_active=1 ORDER BY id ASC LIMIT 0,1
  30. #29 [time:0.0005s] SELECT id FROM le_cms_win WHERE (cid=86 OR cid=87 OR cid=88 OR cid=89 OR cid=90 OR cid=91 OR cid=92 OR cid=93 OR cid=94 OR cid=95 OR cid=96 OR cid=97 OR cid=98 OR cid=99 OR cid=100) ORDER BY id DESC LIMIT 0,10
  31. #30 [time:0.0005s] SELECT * FROM le_cms_win WHERE id=1027 OR id=1026 OR id=1025 OR id=1024 OR id=1023 OR id=1022 OR id=1021 OR id=1020 OR id=1019 OR id=1018
  32. #31 [time:0.0002s] SELECT * FROM le_runtime WHERE k='cate_64' LIMIT 1
  33. #32 [time:0.0002s] SELECT id FROM le_website_group WHERE webdomain='ali213.pjwan.com' AND is_active=1 ORDER BY id ASC LIMIT 0,1
  34. #33 [time:0.0007s] SELECT id FROM le_cms_article WHERE (cid=65 OR cid=66 OR cid=67 OR cid=68 OR cid=125 OR cid=126 OR cid=127 OR cid=128) ORDER BY id DESC LIMIT 0,10
  35. #34 [time:0.0005s] SELECT * FROM le_cms_article WHERE id=103563 OR id=103562 OR id=103561 OR id=103560 OR id=103559 OR id=103558 OR id=103557 OR id=103556 OR id=103555 OR id=103554
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