Here’s why your “Autofill from Referrer Parameter” setup stopped working

Historically, browsers shared a disturbing amount of information across sites, with no way to disable sharing. In the past decade, those features have gained on/off switches, and finally in late 2020 (!) they’re off by default in in Chrome, heavily impacting Referrer-based UTM tracking

Re-enabling the “onSubmit” event when Known Visitor HTML is on

Known Visitor HTML is simpler than a standard Marketo form — to a fault. Here’s how to re-enable the full JS API in KV HTML.

Interesting li’l bug in Email Editor » Edit Code » Download HTML

Alas, no solution for this one (it’s a bug in the Marketo app). But thought the cause was interesting.

Using a ${mktoVariable} on the <html> element itself

Marketo’s <meta> preprocessor tags — used to declare the different types of ${mktoVariable} — may look like standard <meta> tags, but they’re actually more flexible, DOM-wise.

HubSpot form events have a security vulnerability if you use their boilerplate JS

I spend very little time in HubSpot, but it’s always fun to find a vulnerability in a major platform.

Add-on to “Avoiding the dreaded ‘Invalid Image URL’ error with tokenized assets”

An addendum to the earlier post [https://blog.teknkl.com/fixing-invalid-image-url-tokenized-links/] about using tokenized image URLs like https://pages.example.com/rs/123-XOR-456/images/{{Lead.Sales Owner Email Address}}-med.

Get all the fields in a Marketo instance, including their Descriptions

Yet another F12 Console hack to perform an export via the Admin UI (an export you can’t get any other way, including the API).

February’s Brainteaser unteased: Here’s why that bit of Velocity code works instead of failing

In the most recent Velociteaser [https://blog.teknkl.com/velociquiz-split-and-contains-why-does-it-work] I challenged readers to explain why certain Velocity code works instead of — as a datatype mismatch suggests — throwing a fatal