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You may have ever encountered such situations that being rejected by password-protected PDF files which are of importance.
This app is a useful tool for finding recovering passwords and content from PDFs. This app uses the pattern you enter to find a PDF password. If you remember part of the password, alphabet, or number pattern, you can find the password with this app. If you expand the pattern to reduce the number of cases, you can find the password you just forgot. but PDF file with high security encryption is not supported. This app only works locally without going through the server. It allows you to find a password for PDF file in your browser directly. You can also use this app to check the strength of your PDF password. Max 80M limit per a file |
| Drop files on this page. |
*Basic Pattern
| {x,y} | Matches any string that contains a sequence of X to Y |
| [adgk] | Find any character in the given set |
| [:any:],[:digit:],[:lower:]... Special set. | |
| [:any:] | ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!"#$%&'()*+,./:;<=>?@^_`|~- |
| [:alnum:] | ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789 |
| [:alpha:] | ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz |
| [:digit:] | 0123456789 |
| [:lower:] | abcdefghijklmnopqrstuvwxyz |
| [:upper:] | ABCDEFGHIJKLMNOPQRSTUVWXYZ |
| [:punct:] | !"#$%&'()*+,./:;<=>?@^_`|~- |
| [:dic1:] or [:dic2:] | Find from common word dictionary used as password, It can not be used with other patterns. (dic1: 303,873 words, dic2: 265,569 words) |
*Extended Pattern
| {1,4}[:digit:] | Find any digit number that contains a sequence of 1 to 4, ex) 1, 23, 456, 4357... |
| {3,3}[pts] | Find any string that contains a sequence of 3, ex) pts, tps, spt, stp... |
| {1,1}[p]{1,1}[t]{1,1}[s] | Find an exact match to "pts" |
| [p][t][s] | Find an exact match to "pts" |
| {,1}[ts] | No matches or matches one of the characters, ex) "none", t, s |
*Example
| Password | Pattern Example |
| 579823 | {1,6}[:digit:] or {4,6}[1235789] |
| pts2535 | {3,3}[pts]{4,4}[:digit:] or {3,3}[abcdpts]{4,4}[:digit:] or [p][t][s]{2,4}[:digit:] |
| @pts2535@ | [@]{3,3}[pts]{2,4}[:digit:][@] or [@][p][t][s]{2,4}[:digit:][@] |