Dependencies Hope not dead Really! Rated 5 out of 5 stars

If dead as stated by another user, great shame because I oftewn run up against this problem. But will try in Monkey.

Abandoned Rated 1 out of 5 stars

Broken for the last ten or so releases of Firefox.

pls fix Rated 1 out of 5 stars

pls fix for fx43+, no deps show

Dead Rated 1 out of 5 stars

Seems this addon is completely dead nowerdays, the homepage doesn't exist anymore (DNS), and info page of the addon shows blank in Firefox 43.0
Too bad was a great addon.

This user has a previous review of this add-on.

Currently not working in Firefox 42 Rated 1 out of 5 stars

The Dependencies tab is completely blank and not responsive. Even with the latest dev version.

Rated 5 out of 5 stars

(Preview Image on this site broken)

Was the bomb, thanks to ywzhaiqi it is again Rated 4 out of 5 stars

This was one of my most used extensions until it stopped working. Unknown size. Contacted the developer and he fixed it once. Broke again and never replied again.

Then came ywzhaiqi who fixed it again. Thank you very much!!!

This user has a previous review of this add-on.

Rated 5 out of 5 stars

I fixed unknown size on firefox 32+ (cache2)

Fixing unknown size on firefox 27 Rated 5 out of 5 stars

Extract the xpi, find pageInfoOverlay.js, then replace function GetCache with below code. This works with static files, but the html size still being shown as unknown.

// At the top of the file
var gCacheService = Components.classes[";1"].getService(Components.interfaces.nsICacheService);

// Replace function GetCache
function GetCache(url, callback)
const ACCESS_READ = Components.interfaces.nsICache.ACCESS_READ;
try {
var httpCacheSession = gCacheService.createSession("HTTP", Components.interfaces.nsICache.STORE_ANYWHERE, true);
httpCacheSession.asyncOpenCacheEntry(url, ACCESS_READ,
{onCacheEntryAvailable: function(entry, access, status) {
if (entry)
else {
var ftpCacheSession = gCacheService.createSession("FTP", Components.interfaces.nsICache.STORE_ANYWHERE, true);
ftpCacheSession.asyncOpenCacheEntry(url, ACCESS_READ,
{onCacheEntryAvailable: function(entry, access, status) {
}}, true);
}}, true);
} catch(ex) {

Great tool, but “unknown size” issue still not resolved (v. 27.0.1) Rated 4 out of 5 stars

Being a developer, this tool is fantastic at helping me figure out what is causing the biggest drain on load times. Unfortunately, even the version has not fixed the “unknown size” issue in the most recent versions of Firefox (currently 27.0.1). Hopefully this will be fixed soon, as this is one of the most useful tools I have found in the add-ons.

Needs bumping up Rated 4 out of 5 stars

This extension still works. I had to bump up the max version for the installer to get it to install in SeaMonkey 2.21. That is all the updating it needs so far.

"Unknown" Size Error Rated 5 out of 5 stars

For a web developer like me this is a very very important plugin. Please consider updating it! :) If not, maybe someone with enough knowledge can fork this plugin?! Unfortunately there doesn't seem to be any alternative to this wonderful tool. I would even do it myself if I would only know how to develop plugins in Firefox...

Update to version

Click on "Version Information" and then " See complete version history " to find the new fixed version.

Rated 4 out of 5 stars

I have been using this extension for ages, it works nearly great... only issue i had is that it doesn't seems to recognize certain dynamically loaded content such as some scripts... however, as others pointed, the recent issue with latest versions of Fx where the size is always unknown is a pity.

"Unknown" size Rated 3 out of 5 stars

Same problem as "Web" and "ceeb" - all dependencies show "Unknown" size. Affects HTTP and HTTPS, fresh page load or primed cache.

Win7 x64 / FF18.0.2

Rated 5 out of 5 stars

Love this add-on, but I'm having the same problem as Web - all files show "Unknown" sizes.

I'm on Windows 8 with Firefox 18. It doesn't matter whether the page is loaded over HTTP or HTTPS.

Excellent! + Suggestions Rated 5 out of 5 stars

Excellent add-on!

Can we have basic filtering? For example enter a string to show items matching that string, and select dependency types to show (script, background, image)

Rated 5 out of 5 stars

This is one of the most useful tools when creating an optimal website.

This add-on is reporting "Unknown" size for all pages once I installed this on Windows 7. This happens for all websites also. Is there any known issues with 7?

I'm not aware of any specific problem on Windows 7. The size is "Unknown" when a resource isn't in the browser's cache; this happens for all files loaded over https.

Rated 5 out of 5 stars

Essential for people who want to find out more about a website.

Rated 4 out of 5 stars

what about button Reset or Refresh?

This user has a previous review of this add-on.

Rated 5 out of 5 stars

Great add-on! It saves my butt a lot as a developer! A must have for all developers and designers! Thanks!!!