Browser extension for Buttercup, the secure and easy-to-use password manager.

Latest Version

Version
3.2.0
Update
April 11, 2024
Size
3.24MiB
Developer
buttercup.pw
Category
Users
4,000+
Rating
3.55263 ★
Manifest Version
3
Web Store Status
Languages Support
English (UK)
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Permissions
ClipboardWrite
Storage
Tabs
UnlimitedStorage
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Buttercup Extension

Manage your online identities and credentials with Buttercup: An open-source, free and secure password manager. Buttercup uses the strongest industry techniques to encrypt and store your details in a variety of locations of your choosing. Use Dropbox, Google Drive or a WebDAV connection to remotely host your archive for high accessibility. You can also connect local files - all via the Buttercup desktop application (required for this extension).

Buttercup's browser extension allows you to easily log in to all of your online profiles and sites, is extremely secure, is easy to use and completely free of charge. We collect no data about you or any activities you perform. Keep your master password safe as it is the only way to open your archive and access your credentials.

Newly detected logins will cause the extension to prompt you to save them - add all of your online authentication details to keep your accounts safe!
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "manifest_version": 3, "name": "Buttercup", "description": "Browser extension for Buttercup, the secure and easy-to-use password manager.", "version": "3.2.0", "icons": { "16": "manifest-res/buttercup-16.png", "48": "manifest-res/buttercup-48.png", "128": "manifest-res/buttercup-128.png", "256": "manifest-res/buttercup-256.png" }, "background": { "service_worker": "background.js" }, "action": { "default_title": "Buttercup", "default_icon": "manifest-res/buttercup-256.png", "default_popup": "/popup.html#/" }, "content_scripts": [ { "matches": [ "http://*/*", "https://*/*" ], "run_at": "document_end", "all_frames": true, "js": [ "tab.js" ] } ], "permissions": [ "clipboardWrite", "storage", "tabs", "unlimitedStorage" ], "web_accessible_resources": [ { "resources": [ "*.png", "*.jpg" ], "matches": [ "http://*/*", "https://*/*" ] }, { "resources": [ "popup.html" ], "matches": [ "http://*/*", "https://*/*" ] } ]}
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User reviews

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Mohamed (ID: 00000058f3cb9522) Voted 5 ★ - Updated 08/31/2022 Very well done. Zero problems.

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Dominik Morse (ID: 000000799e6ccdf3) Voted 5 ★ - Updated 10/20/2021 Great password manager

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Lokman Afandy (ID: 00000003ac56c280) Voted 3 ★ - Updated 07/15/2021 it is great but need importer for extensions so people can migrate easily

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M Shah Omar (ID: 000000de573a16f7) Voted 1 ★ - Updated 05/21/2021 CPU load always peak whenever this plugin enabled. using chrome Version 90.0.4430.212 (Official Build) (x86_64)

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S Abraham (ID: 0000008593eac38c) Voted 5 ★ - Updated 03/04/2021 I was struggling to find a decent KeePass extension. They all appear to be outdated and don't quite work. Buttercup was suggested. It's a GREAT replacement for LastPass on the desktop. Apps for Apple, Android, not as great depending on your preferences. It's not constantly running in the background, autofilling passwords with one tap. It appears that you actually have to open the app, find the username/password you need, then copy and paste. So, if you don't have as many needs on mobile (and you may not - so many of my services use biometrics, I only need this for the outliers!), Buttercup seems to be a good alternative.