fxRender is an Office Add-in, not a program you install. There is no
setup.exe, no administrator rights needed, and nothing to uninstall
afterwards — Excel loads it and it appears as a panel beside your sheet.
It works the same way in Excel for Windows, for Mac and in a browser — on Microsoft 365 or Excel on the web, but not on the one-off perpetual releases for Windows (what it needs). There are two ways to get it, depending on whether you are one person or an organisation.
Everything happens inside Excel. You never come back to this website, and the licence is held against your Microsoft account — so it follows you onto any machine you sign in to, with nothing to activate and no key to keep.
Any workbook will do. On the web, open a workbook in Excel for the web.
On the Home tab of the ribbon, towards the right-hand end, there is this button. Click it and the add-ins pane opens.
Not there? Some builds — and Excel for Mac — put it under Insert → Get Add-ins instead. Either route reaches the same store.
The pane opens on a short list of suggestions. More Add-ins opens the full Office Add-ins dialog; the Store tab is the one with the search box.
Type fxRender and press Enter. Look for the one published by
CodeCogs.
The blue Add button sits beside the listing. Excel then shows the licence terms and privacy policy and asks you to continue — this is Microsoft's standard prompt for every add-in, not a payment step.
fxRender installs its own group on the Home tab, with a single button. Click it and the panel opens down the right-hand side of the window.
Select a cell with a formula in it, press Ref, and the equation is drawn onto the sheet. The documentation explains the rest, and there is an example workbook to try it on.
fxRender is bought through AppSource, which means Microsoft handles the payment and the receipt, and the licence is attached to your Microsoft account. There is nothing to enter here, and nothing on this site to sign in to.
For an organisation that wants fxRender on everybody's Excel without each person going to the store. Talk to us about a site licence, and once it is agreed we issue you a manifest URL on this website — a small XML file that tells Excel where the add-in lives and what it may do.
The manifest link is issued with the licence. It is not published here, and it is not the same file the AppSource listing uses.
One administrator does this once, and fxRender appears in Excel for everyone you assign it to — on Windows, Mac and the web, with nothing for them to install.
At admin.microsoft.com, as a Global Administrator or an Exchange Administrator.
Then choose Upload custom apps.
Paste the URL we sent you and continue.
To everyone, to specific groups, or to individual users — whatever your licence covers.
Deployment usually reaches people within a few hours, though Microsoft allows up to 24. Excel needs restarting once. After that the fxRender button is on the Home tab for everyone assigned.
Useful for a trial, or for a handful of people, before committing to a deployment. Each person needs the manifest file itself rather than the link — save it from the URL we sent.
~/Library/Containers/com.microsoft.Excel/Data/Documents/wef
— creating the wef folder if it is not there — then restart
Excel and look under Insert →
My Add-ins.
Use across your organisation, the manifest hosted and kept current by us, and updates without anybody reinstalling anything — the add-in is served from this site, so a new version reaches everyone the next time Excel loads it. Get in touch with the number of seats and we will quote.