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Hello,
Thank you for reaching out and I am happy to help!
It seems that there was a temporary problem with the directory that it was moved with the backup plugin and W3 Total Cache tried to open the directory in the meantime.
$dir = @opendir( $path );
E_WARNING is a run-time warning (non-fatal errors). Execution of the script is not halted. There is nothing to worry about in this case if all the files and folders were moved.THanks!
Hello,
Thank you for the information.
I presume that https://images.singletracks.com/blog/ is the CDN URL. Can you please share the website URL?.Thanks!
Hello Wilard,
This is a public forum, and because of that, we would advise you not to share any private information.
In the email, I’ve sent to admin@yourwebsite.con – name Admin Patriot, I’ve asked you to confirm that you are the owner of the account by sharing the details of the subscription. In my reply to your request, I never asked you to check the forum.
Can you please confirm you received this email and can you please reply to it and share the information needed I’ll be more than happy to cancel your subscription?Thank you for your patience and understanding.
Hello,
Thank you for your feedback, Can you please share the URL if the image that is showing converted in the media library?
As I’ve stated before, W3TC use the rewrite rules to serve images as webp.Thanks!
Hello Joshua,
Once the Cache is purged, the visitors should see the updated version of the HTML as the browser will fetch the new cached page.
Thanks!
Hello,
Thank you for reaching out and for your questions.
With W3 Total Cache Image service all images converted with the Image Service tool are sent to a third-party server maintained by the W3 Total Cache team which reduces resource consumption and allows for a large number of conversions in environments where resources can be limited such as shared hosting. Images sent to the W3TC server for conversion are only held temporarily and no permanent information is kept on the server regarding the images.WebP optimizations with the Image Service tool do not replace the original image file and all conversions can be reverted without any loss of data.
W3 Total cache uses the rewrite rules so you can check your.htaccess/nginx.conf and the WEBP rewrite rules should be there.
I would also recommend checking if the image is converted (Use the image URL and change the extension to .webp) and also make sure that Imagic supports the webp for thumbnails and resized images.I hope this helps!
Thanks!
Hello Wilard,
Thank you for reaching out and I am happy to assist you with this.
We’ve received your email via the W3 Total Cache support channel and replied to it. Please continue the correspondence there so we can avoid duplicating the answers.
Thanks!Hello Lynn,
Thank you for reaching out and I am happy to assist you with this.
I’ve replied to your email, sharing all the information about the W3 Total Cache Pro license and access to manage your account.
If you have any questions, please follow up in the email correspondence so we can avoid duplicating the answers.
Thanks!Hello Joshua,
It seems that I misunderstood the issue.
To answer your question, yes the random query string is added to all static files (you can choose which one in Browser Cache settings) and I took minified file as an example since the error was showing minified error.
So to confirm, this was not an issue before you enabled BC, and once you enabled it the issue started to occur? And even when BC is disabled in the General settings, the issue is still there?
As for the inline CSS (I strongly advise revisiting this as an option :)) This is a part of the HTML. So if the HTML is changed, and the cache is purged, the new and updated HTML is served to the users.
After a closer inspection, this error message is coming from React which is a JavaScript library for building user interfaces. Next to an error, there should be a link: https://reactjs.org/docs/error-decoder.html/?invariant=140
And this is suggesting that Expected hook events fire for the child before its parent includes it in onSetChildren()So, this is the first time I am seeing this kind of problem, and related to W3 Total Cache. What I can advise is to disable all settings in W3 TOtal Cache, make sure that .htaccess does not contain any W3TC rules, and re-enable W3TC and the settings within the General settings one by one, saving the settings and purging the cache after each setting is enabled.
If the problem is in the Browser Cache, go to the Browser Cache settings, disable the settings one by one, also save all settings and purge the cache after each setting is disabled, and see which setting may be causing this.Thanks!
Hello Oren,
Thank you for reaching out.
I replied to your email on May 26, 2022, via the W3 Total Cache support channel, and the email used was oren@ however we never received a reply. I am not sure how your email was configured so you may want to check your spam folder.
If I understand correctly once the cookie is used and the user is logged in, the user receives the cookie-based cache. And once the user is logged out, the cache is no longer based on a cookie if I understand correctly, which seems to be normal behavior.
If I did not understand this correctly, please share more information and details.
Thanks!Hello Joshua,
Thank you for reaching out and I am happy to assist ou with this.
We do, have an option for that and it’s called “Prevent caching of objects after settings change” in Performance>Browser Cache.
You can set this option globally, or set it for the individual file types (HTML&XML, JS&CSS, Media&Other files).
What this option does is add a query string to a resource –?xNNNNN
How this works in your case:
1. Minify is enabled and the files are cached:
https://yourwebsite.com/wp-content/cache/minify/02dfe.js
2. Enable “Prevent caching of objects after settings change” in Performance>Browser Cache, under the CSS/JS section, save all settings, and purge the cache.
3. If you check the website after that, you will see that the existing minified file has a random query string at the end:
https://yourwebsite.com/wp-content/cache/minify/02dfe.js?xNNNNN
4. The browser will fetch a new file version as it does not have the file with the query string cached.
5. If you make any changes in JS or CSS that are minified (or not), once the changes are done, go to either Performance>Browser Cache, or Performance>Minify and click on the Update Media query string button, just above the General sub-box, and make sure to save all settings and purge the cache after that
This will ensure that a new query string is generated and therefore force the browser to fetch the new version of the file from the server.I hope this helps and let me know if you have any other questions.
Thanks!Hello Graham,
Thank you for reaching out.
Can you please disable the settings one by one in Performance>general settings, save the settings and purge the cache after each setting is disabled and see which one might be causing the issue?In Performance>Cache Groups>Manage User Agent Groups, you can Create (or simply enable the existing) a group of user agents by specifying names in the user agents field. Assign a set of user agents to use a specific theme, redirect them to another domain, or if an existing mobile plugin is active, create user agent groups to ensure that a unique cache is created for each user agent group. Drag and drop groups into order (if needed) to determine their priority (top -> down).
If you are not using any AMP, the only thing that you need to do is Enable both Groups (High and low), and select the theme that you are using in the dropdown menu to ensure that a unique cache is created for each user agent group. Drag and drop groups into order (if needed) to determine their priority (top -> down).The two default User-Agent Groups are covering all notable groups. If you wish to add any other you can do so by Specifying the user-agents for these groups. Remember to escape special characters like spaces, dots, or dashes with a backslash. Regular expressions are also supported.
Make sure to save all settings and purge the caches once the groups are enabled.
Please make sure to check the screenshot below and let me know if this helps.
Thanks!
Hello Corentin,
We’ve received yoru email via the W3 Total Cache support channel and replied with the instructions.
Please continue the correspondence there if you have further questions so we can avoid duplicating the answers.
Thanks!Hello Luis,
Thank you for reaching out and I am happy to assist you with this.
W3 Total Cache is load-balancer friendly and built from the ground up with the scale and current hosting paradigms in mind.
When using load-balanced servers or a server cluster, Memcached or Redis as a caching method are the best to use. It helps to share the cache between multiple servers.I hope this helps!
Thanks!
Hello Jon,
Thank you for reaching out and thank you for taking the time to check and report this about the W3 Total Cache settings.
We’ll make sure to bring this to the team and discuss the problem for future releases.
Thanks!Hello Vladislav,
W3 Total Cache uses the rewrite condition to serve the webp images. So you should see image/webp type once inspecting the source, which is not the case in your case and mostly because the images are mostly thumbnails, which suggests that the Imagic does not support the webp format and for this you should check with your hosting provider.
Thanks!Hello Vladislav,
Thank you for reaching out and I am happy to assist you with this.
As I can see the original images are converted to webp by W3 Total Cache and you can check this below:https://queridosglitters.ru/wp-content/uploads/2022/05/aloe-vera.jpg
https://queridosglitters.ru/wp-content/uploads/2022/05/aloe-vera.webpWhen the original image has been converted to WebP, but other image sizes are missing WebP versions, you may need to double-check that your WordPress environment supports the WebP format.
While the original image is converted via our API service, the different sizes (e.g. Large, Medium, Thumbnail) are created by your own server. For this, you must have WordPress 5.8 and the appropriate libGD or ImageMagick package available on your server.
To check if your WordPress environment supports WebP, navigate to Site Health > Info > Media Handling and double-check that WebP is listed in the supported file formats for the library shown in the Active editor. If you find these are missing the WebP extension, consult your system administrator to set up the correct packages.
Also, make sure if you are using the nginx proxy that the Proxy is not responsible for handling the static assets.
Thanks!
Hello Mario,
We are offering plans for a single license activation on multiple installations for W3 Total Cache pro.
The bulk of 5 activations – $350/year
The bulk of 10 activations – $500/year
If you are interested in this or you have other requests, please drop us a note directly via the plugin in Performance>Support, or via the website contact form.
Thanks!
Hello,
Thank you for reaching out and I am happy to assist you with this.
I’ve made changes as requested and sent the invoice for W3 Total Cache Pro. I’ve deleted the information you shared since this is a public forum.
Thanks!Hello,
Thank you for reaching out and I am happy to assist you with this.
I’ve checked the website and as I can see on the first load, the proxy and server cache are active:
x-proxy-cache: HIT
x-server-cache: trueThis means that you also need to purge the proxy and server cache. When the page is reloaded those headers are gone.
x-server-cache: false
You can confirm this by temporarily disabling the W3 Total Cache.Let me know if this helps!
Thanks!
Hello Steven,
As I can see the W3 Total Cache Pro license is activated on 2022-05-25
If you still do not see the Pro version active, remove the license key from Performance>General settings, Licensing sub-box, license field, and save all settings. Re-enter the license, verify the license with the “verify license button” and save all settings.
W3 Total Cache Pro should be active after these steps!
Thanks!
Hello Terry,
Thank you for reaching out and I am happy to assist you with this.
I’ve checked your website and inspected the source, and as I can see all images hosted on your server are converted and served as webp.
Please check the screenshots below:
This is the case on all pages of the website so I can confirm that images are converted and served as webp!
Thanks!
Hello Adam,
First of all, thank you for the awesome review.
To answer your questions:1. We do not have documentation on every CDN setting since all settings are self-explanatory and of course, it depends on which CDN provider you are using and if you are using Pull or Push CDN Type. However thank you for the idea, as this might be a good article. I will add explanations below:
Host attachments: when enabled, attachments (e.g. images from the media library) are served through the CDN.
Host wp-includes/files: when it is active the files of the wp-includes folder are served through the CDN.
Host theme files: when enabled the theme files are served through the CDN.
Host minified CSS and JS files: when enabled, minified CSS and JavaScript files are served through the CDN.
Host custom files: refers to the files specified in the Custom file list that you can see in the Advanced tab of this same page.
Add canonical header: This allows you to identify the original URL with the canonical tag. Generally, search engines are able to distinguish the URL without the need to specify it, so by default, the option is disabled.
Advanced
Only purge CDN manually: by default W3TC manages autonomously the purge of the cache. If you enable this option you will purge the cache only manually, normally you don’t need to enable the function, as this was specifically added for Cloudfront users because of the huge invalidation costs on the AWS side
Disable CDN on SSL pages: By activating this option you may run into the problem of mixed content. It happens when some contents are downloaded using HTTP protocol instead of HTTPS and the browser returns a not-secure site warning. In most cases, it is better to leave this option disabled.
Disable CDN for the following roles: This allows you to choose which user roles to disable CDN for.
2. Akamai CDN, as you can see is the origin pull, which means that the files are uploaded automatically to the CDN. Once uploaded, all images and files are served from the CDN. The CDN will not serve the image if it’s not uploaded to the CDN. In this case, the image will be served from the origin.
3. It’s recommended to use different filenames for each image. So if the situation you described occurs, you should try purging the cache manually for the CDN in the W3TC settings. The problem with this is not the CDN, but the Browser Caching. For images, it’s recommended to use 1 year caching for browsers (
Expires headerandcache-controlheader) so if the image has the same filename and a different image is uploaded instead, the browser will think it’s the same image and will not fetch for the new one. It’s recommended to use the option “Prevent caching of objects after settings change” in Performance>Browser Cache. This option adds the random query string to files (You can enable it only for images) for example:?xNNNNN. This will ensure that the browser always fetches the new file from the source, in your case CDN, and all you have to do us toupdate the media query stringin Performance>Browser Cache (Just above the general section), once new image is uploaded with the same filename.I hope this answers your questions.
Thanks!
Hello Adam,
You are most welcome!
We would really appreciate it if you could take a minute and post a review here. This will help us to continue offering a top-notch product to users.
Thanks!Hello George,
Thank you for reaching out and I am happy to assist you with this.
If the W3 Total Cache license is not renewed after a year, only the Pro features will stop working like FSD CDN integration or Eliminating render-blocking CSS.
All other features that come with the free version will still work as expected.
I hope this helps!Thanks!
Hello Leticia,
Thank you for reaching out and I am happy to answer.
W3 Total Cache uses ajax calls to convert the images to webp. Once the Convert all operation is executed, you should at least stay logged in (You switch to other windows).
There is also a limit for free users so depending on the number of images, this process may time out.
I would advise simply keeping the Dashboard window open and logged in.
Thanks!Hello Adam,
1. In the “Replace site’s hostname with” field, the CDN’s edge address should be added. This is used to rewrite the URL of the static resources as I’ve mentioned in the previous post.
2. This should be added in the Performance>CND>Configuration: objects section.
3. The CDN configuration depends on the CDN provider. You can always use Generic mirror and only add the CDN”s Edge address, or use Akamai from a CDN dropdown menu and configure the CDN with Username and Password.
You can check this article for more details about Image Service.4. W3TC does not handle image resizing upon uploading a new image, so you can use some plugin for this.
Thanks!
Hello Adam,
W3 Total Cache rewrites the URL using the Replace site’s hostname with a section in Performance>CDN.
As you can see in the description, Enter the hostname provided by your CDN provider, this value will replace your site’s hostname in the HTML.
SO instead ofyourwebsite.come/wp-uploads/2022/05/someimage.jpeg, you will get the CDN URL for exampleakamai.yourwebsite.come/wp-uploads/2022/05/someimage.jpeg
And to answer your question, yes you also need to set up a CDN for staging website as this is a different URL.I hope this helps!
Thanks!
Hello,
Thank you for reaching out and I am happy to assist you with this.
All images converted with the Image Service tool are sent to a third-party server maintained by the W3 Total Cache team which reduces resource consumption and allows for a large number of conversions in environments where resources can be limited such as shared hosting. Images sent to the W3TC server for conversion are only held temporarily and no permanent information is kept on the server regarding the images.
W3 Total Cache uses a rewrite to serve thewebpimages once converted.
Once converted, and the cache is purged, the images are served as webp and you can check this by inspecting the source and checking the image mime-type.
Please make sore to check our article and let me know if you have any other questions.
Thanks!Hello,
Thank you for reaching out and I am happy to assist you with this.
W3 Total Cache Pro licenses are valid on a per-install basis, meaning you need one for every WordPress instance you run. If you have three separate websites, you will need three licenses in total—one for each site. If you have five sites in a WordPress multisite instance, you need just one license for all five sites. If you are interested in bulk licensing, and we are offering bulk licensing for 5 and 10 activations, please email us for more information.Thanks!
Hello Alexa,
I am sorry about the issue you are experiencing and I am happy to assist you with this.
The reason behind this is that caching is not active by default for logged-in users in W3 Total Cache, so what you are seeing when not logged in is a problem with some of the settings activated or possibly a conflict with some other plguin.
I can see that W3TC is not active at the moment, and I can also see that you are using Cloudflare – however, I am unable to see if you are using any other caching layer/method.
I would advise re-activating W3 Total Cache, and disabling the settings one by one in Performance>general settings, saving the settings and purging the cache after each setting is disabled, and seeing which one might be causing the issue?Thanks!
Hello,
I am sorry about the issue you are experiencing and I am happy to help.
The license key was sent to the email address used to subscribe to W3 Total Cache pro, and the one you provided here.
I can see that the license key is applied to the website activated on 2022-04-28 12:30:16
Since this is a public forum I will not share the license key here or on the website.
If still do not see the Pro version active, remove the license key from Performance>General settings, Licensing sub-box, license field, and save all settings. Re-enter the license, verify the license with the “verify license button” and save all settings.W3 Total Cache Pro should be active after these steps!
If you are still experiencing the issue, please drop us a note directly via the plugin in Performance>Support or via the website contact form.
Thanks!
Hello Adam,
Thank you for your questions and I am happy to assist you with this.
W3 Total Cache does have integration with Akamai CDN and you can see that if you check the CDN dropdown under Performance>General Settings>CDN>CDN Type:
To answer both of your questions, Yes W3 Total Cache will and can upload the images to the CDN, however, W3 Total Cache cannot upload the images directly to Akamai CDN without them being uploaded to the server first. What the W3 Total Cache CDN feature does is, uploads the images and use a URL rewrite to serve those images from the CDN instead of a server.
Since this use case is not recommended this is out of the W3 Total Cache scope and to be honest, I’ve never seen a plugin that does that.I hope this answers your questions.
Thanks!
Hello Sue,
Thank you for your feedback.
You are most welcome and I am glad the problem is resolved!
We would really appreciate it if you could take a minute and post a review here. This will help us to continue offering a top-notch product to users.
Thanks!Hello Sue,
Thank you for yoru feedback.
If you are not seeing anything in the source, most likely the HTML minify is enabled which removes comments
Go to Performance>Minify>HTML&XML section, and add thePerformanceto Ignored comment stems: field, save all settings and purge the cache. Once this step is done, HTML Minify will ignore comments containing Performance, and you should see something similar as the following when inspecting the website in the bottom of the HTML source<!-- Performance optimized by W3 Total Cache. Learn more: https://www.boldgrid.com/w3-total-cache/ Object Caching 121/331 objects using disk Page Caching using disk: enhanced Page cache debug info: Engine: disk: enhanced Cache key: yourwebsite.com/_index_ssl.html Creation Time: 1650990604.000s Header info: Content-Type: text/html; charset=UTF-8 X-Powered-By: W3 Total Cache/2.2.1 Link: <https://yourwebsite.com/wp-json/>; rel="https://api.w.org/" Content Delivery Network Full Site Delivery via Cloudflare Lazy Loading Minified using disk Served from: yourwebsite.com @ 2022-04-26 17:30:04 by W3 Total Cache -->I hope this helps!
Hello Sue,
In this case, depending on a caching method, if it’s Disk: Enhanced, for example, the folder should be created with the IP address instead of the URL, for example:
/wp-content/cache/page_Enhanced/2.249.65.164/
However, I cannot specify the exact issue without inspecting the source and checking the debug. You can check it yourself by enabling the Debug For Page caching in Performance>General settings.
I hope this helps!
Thanks!Hello Sue,
Thank you for reaching out and I am happy to assist you with this.
Can you please share/confirm the website URL?
Can you also please share more details about the W3 Total Cache configuration and why you think that Page Caching does not work as expected?
Thank you!Hello Graham,
Thank you for the information. Yes, I can see the difference now, and most likely the problem is that the cache needs to be separated for desktop and other user agents.
You can achieve this by going to Performance>Cache Groups, and under Manage User Agent Groups, enable both groups, select your current theme from the Theme: Dropdown menu, save all settings and purge the cache.
Let me know if this helps!
Thanks!Hello Graham,
Thank you for reaching out and I am happy to assist you with this.
When I’ve checked the website, I can see the Hamburger menu, which is of course mostly related to Mobile versions of the websites.
Can you please confirm that this is the problem you are seeing?
I bypassed the cache and the result was the same. Can you please take a screenshot of what you are seeing, and also, please disable W3 Total Cache and take another screenshot of what the website actually supposed to look like.
Thanks!
