Preferences dialog sleeps and crashes (Firefox 36.0.4) Rated 1 out of 5 stars

The preferences dialog needs ~1 Min to check the system and show the window contents, failed to detect GNUgpg directories while estimating the installation OK. Reproducible script crash in the keys subdialog. Deinstalled immediately without testing its functionality.

Platform-specific binaries Rated 1 out of 5 stars

Unfortunately, this plugin relies on platform-specific binaries (NPAPI). Some may argue that this offers better security; however, this causes portability issues. A better solution would be to use OpenPGP-JavaScript.

Did NOT work on FF 28 and 33.1.1. :( Works on some FF? Rated 3 out of 5 stars

I was very excited to see this addon. Successfully installed on FF 28 and 33.1.1, but it did not work either. :( Got this error page with this URL:
Error loading WebPG

We encountered a problem while attempting to load WebPG

Error (-1): WebPG Plugin failed to load

The plugin was unable to load
Error Details
Error in Method: undefined
Error Code: -1
Error String: WebPG Plugin failed to load
File: webpgPluginAPI.cpp
Line: -1
System Information
Platform: Win32
App Version: 5.0 (Windows)
User Agent: Mozilla/5.0 (Windows NT 5.1; rv:28.0) Gecko/20100101 Firefox/28.0
Product: Gecko
Sub-product: 20100101
Language: en-US

I hope you can make this work, because I think it is really wanted and needed by people, and would be appreciated by many. Those who have gotten this to work fully, please post the browser version here for all to know.
Does this work on some versions of Firefox? Which?

Kyle, please let me know once you got it working fully, and I'll do a post, or a review or or How-To, or something for WebPG at

Also, after going to FF Addons, and clicking on Options for your addon, the following errors show:
There is a problem with your configuration.
There was a problem loading the plugin; the plugin might be incompatibly compiled for this architecture.

Rated 5 out of 5 stars

Why let website owners control your identity? Why force other users to talk to you in the clear? This plugin solves that problem.

Small bugs: It sometimes prevents the spellcheck from changing things. And it doesn't tell you when it's doing something slow and important, such as generating keys.
The Webpg drop down menu on form boxes would benefit from also appearing on the submit buttons.
Precomputing some default pgp keys and using mozilla-sync to share amongst other devices would be a great help!

Keep up the good work!

webPG 4 Linux is OK Rated 4 out of 5 stars

Working with Ubuntu 12.x . Looks stable (until maybe later I shall report more)

With inline decryption doesnot work yet (only gmail is mentioned to work )
althouth pgp-mime is even recognized.

Didn't work Rated 1 out of 5 stars

I installed WebPG for Firefox 0.9.2 (no problem), restarted Firefox, went to Options for the WebPG add-on, and got this: "There is a problem with your configuration. There was a problem loading the plugin; the plugin might be incompatibly compiled for this architechture."

I'm using Firefox 27.0.1 on Windows 7 Home Premium.

So, no go for me.

you as keymaster Rated 5 out of 5 stars

unlike other "easy" encryption extension with webPG YOU are the keymaster as you OUGHT be.

trusting a third party to be keymaster and gatekeeper? you might as well trust NSA to do the right thing with your privacy. see also gullible.

Freezes, broken sites Rated 1 out of 5 stars

Keymanager always freezes firefox.
It also breaks some site layouts

Doesn't find my keys Rated 1 out of 5 stars

WebPG says "Your system appears to be configured correctly for WebPG," yet none of my keys show up and I don't have an option to import any, only generate a new one.

Complex Encryption - Simply! Rated 5 out of 5 stars

A very straightforward add-on that allows users of all levels (and those without prior encryption experience) to use high grade encryption.

Instantly encrypt/decrypt web based email (using a web browser to read email - for example Gmail, Hotmail).

What I find useful about WebPG is that:

- Installs as any other Firefox add-on; easy!
- Colourful, easy to view settings menus (see screenshots).
- A novice can be locking down and securing their communications in less than 5 minutes.

Simply the easiest PGP based encryption add-on or application I've seen to date.

Welcome to the age of privacy & security through industrial grade encryption.


'What is a digital signature?' A simple, quick, illustrated overview of digital signatures.

GNU Privacy Guard:

Brings GPG to the browser. Rated 4 out of 5 stars

WebPG brings GPG cryptography to the browser. I primarily use it for signing / encrypting (and verifying / decrypting) emails using gmail. The web interface for gmail has evaded cryptography for a long time however, this addon does seem to work.

The gmail integration is labelled as "very beta" and I think this is true. However, if all you want is the four basic functions, it works well enough. There are a few tiny workarounds that you may need to do (eg. I've found that I need to use the popped-out compose window for webPG to work correctly).

All in all, a very good start to bringing cryptography to the web. For far too long people have been unable to use cryptography inside the many browser-based communication methods that we use now.

How does this work? Rated 1 out of 5 stars

I could not figure out how to encrypt, decrypt, and sign my emails in Thunderbird.

Rated 2 out of 5 stars

Didn't work for the newest versions of firefox....

Does not compile Rated 1 out of 5 stars

When trying to access key management, a window opens telling me that the keys are being assembled, but nothing happens. My attempts to enter the configuration dialogue are ending up in a compile error message. I'm using Firefox 21.0 on XP.

It sounds to me like you do not have GnuPG installed, which is a requirement. WebPG extends GnuPG; it must be installed.

If you do have GnuPG installed, it is possible that WebPG is unable to detect/locate it, in that case I would suggest contacting WebPG support to resolve the issue.

Awesome addon, buggy interface Rated 4 out of 5 stars

Excellent addon, but it's initially slow and cumbersome. Took me few minutes and two FF restarts to get it to work. Also doesn't recognize gpg4USB keys or enable browsing for keys. Please perfect it as GPG would be very difficult without it!

Rated 4 out of 5 stars

Great so far. Definitely a work in progress, with a few interface glitches, but the main features work well and are extremely useful. The developer is also very responsive to bug reports and feedback.

Rated 1 out of 5 stars

A promising extension, but I could not use it because it does not work on small screens. The dialog popups are always partly off-screen, and they're unresizable. The options dialog breaks out into its own window instead of staying in a tab, and most of the time there's no draggable titlebar either. It takes a lot of effort to defeat HTML's natural flexibility, and modern usefulness of tabs.


If you could get it to display a draggable titlebar, along with the ability to resize it, then I can move it to be on-screen, and resize it to fit. Giving scrollbars when I resize it smaller than you intend for it to be would allow it to fit in any screen. When that much works, then I can try this again.

This review is for a previous version of the add-on ( 

Work is underway to better account for small resolutions. This is a technical challenge, since the resources in question are not standard HTML, and the information being displayed is quite vast.

The Options Dialog is XUL, not HTML, and for the time being needs to be within it's own window, not within a tab. As for the dialogs, most of the dialogs are IFRAME elements in order to prevent the host page from accessing the data. Sizing and moving those dialogs based on host window-size and page content is very tricky.

I assure you that no effort was put forth "to defeat HTML's natural flexibility, and modern usefulness of tabs" -- quite the opposite has occurred, but unfortunately it is not so simple to create an extension code-base that is compatible with 3 browsers on 3 different operating system that handles every part of the UI as the user would expect.

If you are having issues with the user interface, I would urge you to get in contact with support to open a bug report, or suggest ideas to make the interface more usable.

In the meantime, this extension is BETA and is actively being improved. I ask that you have patience with the progress as changes take a lot of time to develop and adequately test.

GnuPG version Rated 3 out of 5 stars

It seems to require GnuPG v2. Won't install/work with v1.4.x

This review is for a previous version of the add-on ( 

RE: GnuPG v1.4.x

There is no requirement for v1.4.x -- what exactly was not working with v1.4.x?

In order to perform some tasks, you do need gpgconf installed, which is a part of GnuPG v2 -- however it is not required in order for the core functionality to operate.

If anything other than those functions that require gpgconf did not work for you under GnuPG v1.4, I would like to correct them if possible.

Good but needs work Rated 4 out of 5 stars

I really like this extension, the one thing that I find it lacking is frame support. I know frames aren't super common today but the webmail service that I use uses them and in order for webpg to function I have to have the textarea or input field in a page of its own. Which, though workable, is very annoying.

The only other thing is that I always need to reload the page to get inline decryption to work. Not sure why it doesn't on the first load but it just displays blank until I reload it.

Just want to end by saying huge thanks for this plugin, after a couple of kinks are worked out it will be fantastic!

This review is for a previous version of the add-on ( 

Changes implemented

Thank you for your comment, I am glad you find it useful.

In response to your comment, I have implemented frame support for the inline parser, and have made improvements to the context-menu methods to better support integration.

I very much want to resolve the issues you have with the application, and ask that you give the latest version a go to see if it addresses your concerns (once it is available for download).

I would also like to do some testing with your specific webmail service - if you could possibly go to and use one of the available methods to indicate if the latest changes address your issues, and also let me know which webmail provider you are having difficulty with, I will see what I can do to improve the integration.

Because the latest version of webpg-firefox (v0.9.0) is still pending technical review by the Mozilla Add-on reviewers, it is not yet available for download. However I expect the latest version to be available within the next few days.

Kyle L. Huff

Preferences borked Rated 2 out of 5 stars

I couldn't get the preferences to stick, can't even pick which key to use (i did try disabling all my other extensions to see if it was a conflict, but didn't help). It would be great if it worked...

This review is for a previous version of the add-on ( 


More than likely, the preferences are giving you grief due to an issue interacting with the include modules. I would very much like to address your issues, and ask that you provide more information about your configuration, system and operating system by using one of the available methods of contact listed at

I look forward to resolving the issues you are seeing.

Kyle L. Huff