The MathJax CDN hosted at cdn.mathjax.org will be shutting down on April 30, 2017.
Our CDN has been an important part of MathJax’s history. When MathJax made its first public release in 2010, hosting a library like MathJax was a complex challenge. The CDN launched a year later and helped resolve this difficulty, enabling MathJax to quickly become the gold standard for rendering mathematics on the web.
Over the past 6 years, the CDN has grown steadily each year. From 22 Million monthly users and 1.3TB traffic in late 2011 to 179 Million monthly users and 70TB traffic last month. We switched CDN providers several times to improve performance and reduce costs. In the last three years we could keep up with this growth thanks to support from Google (providing free storage on Google Cloud Storage) which we combined with CloudFlare.
Recently, CloudFlare informed us that we need to upgrade our CloudFlare plan at a significantly increased rate. We greatly appreciate how CloudFlare has worked with us to find a suitable solution. Unfortunately, we do not see an affordable way to keep the CDN.
The MathJax Consortium and its team have come to the decision that our resources are best spent by focusing them on development and so we will retire our self-hosted CDN service on April 30, 2017.
We are proud of what the MathJax CDN has accomplished for mathematics on the web and we are grateful for everyone who has made use of it. We hope we can help everyone migrate to a new setup quickly and efficiently over the coming weeks.
We believe there will be no loss to the community thanks to the many good alternatives that exist - we outline several options below.
Alternative CDN providers
The easiest way for most site owners will be to simply switch to another CDN provider. We recommend cdnjs which uses CloudFlare for delivery and thus provides the same level of quality as our own CDN. We have been in touch with cdnjs’s maintainers and will help push future MathJax releases to cdnjs.
For example, if you have been using the latest MathJax version (v2.7.0) change
Note If you have been using
https://cdn.mathjax.org/mathjax/latest/, you have to switch to a dedicated version going forward. That is, you will have to change the address manually to a higher number when new versions become available; the automatic switching provided by
/mathjax/latest/ is not available on the cdnjs server.
Install a local copy
Our documentation page on installing MathJax explains how to install MathJax locally.
If you want to share your installation across (sub)domains, keep in mind that MathJax uses webfonts which are subject to same-origin restrictions; see our notes about shared installations for more details. If you are looking into hosting MathJax via a cloud provider, you can also check our developer wiki on how we set up MathJax on Google Cloud Storage.
A common concern with local installations is the size of a complete copy of MathJax, in particular the ~29,000 PNGs in
fonts/HTML-CSS/TeX/png/. These so-called “image fonts” are only relevant for the HTML-CSS output and in browsers where webfonts fail. Nowadays, there are extremely few edge cases where the “image fonts” could provide a benefit (e.g., users blocking webfonts) so it is usually safe to remove them. We generally recommend switching to the CommonHTML and SVG outputs since the HTML-CSS output will be dropped from v3.0.
mathjax on NPM and
components/mathjax on Bower do not include the image fonts.
In addition, most sites only require a fraction of MathJax’s functionality - usually 1 input + 1 output is sufficient. This allows further trimming of local installations, down to a few megabytes. Reducing the MathJax installation to the relevant parts is easily done either manually (using our old guide) or automated, e.g., using our MathJax-grunt-cleaner.
Note. If you remove features that can be accessed via the MathJax Menu (e.g., output options), we recommend disabling the relevant controls in the Menu; see the Menu configuration options for more information.
Third party extensions
MathJax’s third party extensions are not yet available on alternative CDNs but we are working on adding them to cdnjs to ensure a smooth transition. We will update the community and our documentation once it is ready.
In the mean time, you can easily set up your own copy and follow our documentation for loading third party extensions.
Throughout the next month, we will regularly alert the community through mathjax.org, our mailing lists, and social media. We will also update our documentation with new CDN recommendations.
If you can help us spread the word so that as few sites or tools as possible are affected, we would be most grateful!
Thanks again for your continued interest in MathJax!
The MathJax Team.