QR Codes
Facebook QR code: which link to encode, and why
Make a Facebook QR code from your Page link in a minute. Which address to use, why a username change can break a printed code, and what Meta's brand rules say about the Facebook logo.
Blog
Tips, tutorials and news
QR Codes
WiFi QR code: make one that actually connects
A WiFi QR code joins guests to your network without typing the password. Which security type to pick (WPA2 or WPA3), how small you can print it, and why it belongs on a guest network.
Marketing
Click through rate (CTR): formula, email CTR and what a good CTR is
Click through rate is the share of impressions that end in a click. How Google Ads, Search Console and email tools count it, how CTR differs from CTOR, and where bot clicks in email come from.
QR Codes
vCard QR code: data in the code or a link in the code
A vCard QR code on a business card can carry the whole contact or a link to a page with the details. How much room each takes on the card, what to enter and when the link stops working.
QR Codes
QR code with logo: how big the logo can be and what not to cover
A QR code with a logo works thanks to error correction, but its "30%" counts codewords, not area. How much logo our code survived, what not to cover and how to check it before printing.
QR Codes
Google review link: how to get it and make a QR code
Google gives you the Google review link and a ready QR code in your Business Profile. Where to click, how large to print the code and what Google's policies forbid when you ask customers for a review.
QR Codes
Minimum QR code size: why a code will not scan and how big it must be
Minimum QR code size depends on what the code contains, not on centimetres. Seven causes of a QR code not scanning in the order to check them, and a formula for the smallest print size for your content.
QR Codes
How to make a QR code: types of codes and what goes inside
How to make a QR code in a few minutes, which type to pick, what exactly is stored inside the code and when a static code is enough and when you need a code on a short link.
Tutorials
How to shorten a link without losing your click statistics
How to shorten a link in a minute, why a link shortener should redirect with 302 rather than 301, where to add UTM parameters and what the goo.gl shutdown teaches.
Marketing
UTM parameters: what they are and how GA4 reads them
What each of the nine UTM parameters means, which rules GA4 uses to assign a channel, why letter case splits your report and how UTM tags work with a short link and a QR code.
Tutorials
Link tracking from the first click: getting started with DVN Links
Set up link tracking in DVN Links with a short link and QR code, and learn what each click records, what the statistics show and what limits a free-plan link has.