Why “Grab Images from Web” may show an error or return partial results

Grab Images from Web (under Email Editor » Email Actions and the equivalent spot in LP Editor) is a cool tool, but it’s subject to common web security restrictions. So

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 preprocessor tags — used to declare the different types of ${mktoVariable} — may look like standard 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 about using tokenized image URLs like https://pages.example.com/rs/123-XOR-456/images/{{Lead.Sales Owner Email Address}}-med.png — which throw an error

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).