Skip to content

Instantly share code, notes, and snippets.

@derjanb
Last active April 17, 2025 12:27
Show Gist options
  • Save derjanb/9f6c10168e63c3dc3cf0 to your computer and use it in GitHub Desktop.
Save derjanb/9f6c10168e63c3dc3cf0 to your computer and use it in GitHub Desktop.
#!/usr/bin/env python
# Linux usage: ./extract_tampermonkey_script.py "/home/<USER>/.config/<BROWSER>/Default/Local Extension Settings/<EXTENSION_ID>"
# i.e.: ./extract_tampermonkey_script.py "/home/foo/.config/google-chrome-beta/Default/Local Extension Settings/gcalenpjmijncebpfijmoaglllgpjagf"
# Mac usage: ./extract_tampermonkey_script.py "/Users/<USER>/Library/Application Support/Google/Chrome/Default/Local Extension Settings/<EXTENSION_ID>/"
# i.e.: ./extract_tampermonkey_script.py "/Users/foo/Library/Application Support/Google/Chrome/Default/Local Extension Settings/dhdgffkkebhmkfjojejmpbldmpobfkfo/"
import leveldb
import sys
import re
import json
import codecs
pattern = re.compile("^@source(.*)$")
db = leveldb.LevelDB(sys.argv[1:][0])
for k,v in db.RangeIter():
m = pattern.match(k)
if m:
name = re.sub("[\W\b]", "_", m.groups()[0].strip())
full_name = "%s.user.js" % name
print "Writing to %s" % full_name
content = json.JSONDecoder(encoding='UTF-8').decode(v)['value']
with codecs.open(full_name, 'w', 'utf-8') as text_file:
text_file.write(content)
@iamqiz
Copy link

iamqiz commented Nov 6, 2022

@EdFrees i guess your tapermonkey dir is not valid leveldb database, the database dir include Manifest-* CURRENT *.ldb(or *.log) files and so on.
details about google leveldb:
https://github.com/google/leveldb/blob/main/doc/impl.md

@EdFrees
Copy link

EdFrees commented Nov 7, 2022

@iamqiz I understand. I see the files that are mentioned in the post:
000010.ldb, 000012.ldb, 000013.log, CURRENT, LOCK, LOG, LOG.old, MANIFEST-000011
After I run the script some file names are changed. 000015.log and MANIFEST-000014. The LOG is also adjusted I think.

@EdFrees
Copy link

EdFrees commented Nov 19, 2022

Could anyone please help me out trying to extract the scripts?

@optionsx
Copy link

Nice! thanks a bunch

@ziqian-L
Copy link

@iamqiz 佬,我把位于C:\Users\用户名\AppData\Local\Microsoft\Edge\User Data\Default\Extensions里的油猴插件拖出来后,油猴脚本消失了,这种情况可以恢复脚本吗?

@iamqiz
Copy link

iamqiz commented Apr 12, 2023

@ziqian-L 油猴数据位于 "C:\Users<USERNAME>\AppData\Local\Microsoft\Edge\User Data\Default\Local Extension Settings\<EXTENSION_ID> 下, 如果有CURRENT *.ldb 等文件,那么可以恢复, 我的仓库可以在线恢复,不需要自己搭python环境 ,见: https://github.com/iamqiz/github-action-for-tapermonkey

@ziqian-L
Copy link

ziqian-L commented Apr 12, 2023 via email

@iamqiz
Copy link

iamqiz commented Apr 12, 2023

@ziqian-L 😂 以后定期做好备份吧 ,设置>实用工具>压缩包|文件> 导出

@ziqian-L
Copy link

ziqian-L commented Apr 12, 2023 via email

@aleclarson
Copy link

Is there something like this for Firefox?

@robinlej
Copy link

I had to rewrite it slightly for it to work because values are bytearray, not strings.
I also used python3 which AFAIK is the default on most distros now:

#!/usr/bin/env python3

# Linux usage: ./extract_tampermonkey_script.py "/home/<USER>/.config/<BROWSER>/Default/Local Extension Settings/<EXTENSION_ID>"
#        i.e.: ./extract_tampermonkey_script.py "/home/foo/.config/google-chrome-beta/Default/Local Extension Settings/gcalenpjmijncebpfijmoaglllgpjagf"
#   Mac usage: ./extract_tampermonkey_script.py "/Users/<USER>/Library/Application Support/Google/Chrome/Default/Local Extension Settings/<EXTENSION_ID>/"
#        i.e.: ./extract_tampermonkey_script.py "/Users/foo/Library/Application Support/Google/Chrome/Default/Local Extension Settings/dhdgffkkebhmkfjojejmpbldmpobfkfo/"

import leveldb
import sys
import re
import json
import codecs

pattern = re.compile(b"^@source(.*)$")

db = leveldb.LevelDB(sys.argv[1:][0])

for k,v in db.RangeIter():
    k = k.decode('utf-8')
    m = pattern.match(k)
    if m:
        v = v.decode('utf-8')
        name = re.sub("[\W\b]", "_", m.groups()[0].strip())
        full_name = "%s.user.js" % name

        print("Writing to %s" % full_name)

        content = json.JSONDecoder().decode(v)['value']

        with codecs.open(full_name, 'w', 'utf-8') as text_file:
            text_file.write(content)

@eldepor
Copy link

eldepor commented Dec 14, 2024

for those who cant install that leveldb crap. Install plyvel and try this script chatgpt adapted for me (tested on python 3.8 windows7)

import plyvel
import sys
import re
import json
import codecs

pattern = re.compile(b"^@source(.*)$")

db_path = sys.argv[1]
db = plyvel.DB(db_path, create_if_missing=False)

for k, v in db:
    m = pattern.match(k)
    if m:
        k = k.decode('utf-8')
        v = v.decode('utf-8')

        group_decoded = m.groups()[0].decode('utf-8')
        name = re.sub("[\\W\\b]", "_", group_decoded.strip())
        full_name = f"{name}.user.js"

        print(f"Writing to {full_name}")

        content = json.JSONDecoder().decode(v)['value']

        with codecs.open(full_name, 'w', 'utf-8') as text_file:
            text_file.write(content)

db.close()

@KulaGGin
Copy link

For those who just want to copy tampermonkey scripts from one Chrome browser to another, you don't need scripts to just copy the scripts to another browser.
Copy folder C:\Users\YourUserName\AppData\Local\Vivaldi\User Data\Default\Local Extension Settings\dhdgffkkebhmkfjojejmpbldmpobfkfo. If the extension id changes when you will want to do it, look it up in the extension list.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment