Shipping, multi-carrier and the engineering behind KYTH.Karl
Recent posts on Shopify shipping, carrier strategy and the tech behind Karl.
Shopify gift card apps compared 2026
Shopify gift card apps compared: built-in gift cards, Rise, 99minds, Govalo, Givy, Gift Card Factory and Kartuu. Sourced from the listings, no ranking.
Shopify shipping apps compared 2026
Shopify shipping apps for shops in Germany and Austria: Shopify Shipping, the DHL app, easyDHL, Sendcloud, Shipstation, Easyship and Karl. Sourced, no ranking.
Designing your own Shopify gift cards: from code to folding card
How to create a Shopify gift card, step by step: what Shopify does by default and how the code becomes a designed, print-ready folding card. With a checklist.
The German packaging register LUCID: an overview for Shopify merchants
LUCID, the dual system and eight material types: what is documented, what is disputed between ZSVR and the Commission, and what the PPWR really changes.
Extended Area Surcharges: What they are and how to avoid them
Extended Area Surcharges make parcels to remote postcodes more expensive and often only surface on the consolidated invoice. Mechanics, affected carriers and how a check before the label makes them visible.
Shopify shipping: 5 lessons from years as a merchant
As a Shopify merchant I made expensive shipping mistakes. Five lessons from daily operations: surcharges, multi-carrier, the packing table, returns and the right app.
DHL surcharges 2026: energy surcharge, fuel surcharge, bulky goods
What DHL Paket and DHL Express charge on top: energy surcharge, toll and CO2 surcharge, peak surcharge, fuel surcharge and bulky goods. With rates, dimensions and sources as of October 2026, and which of them can be spotted before the label.
Multi-Carrier vs. Single-Carrier for Shopify: When it pays off
One carrier is enough, until it gets more expensive, fails, or breaks your delivery promise. An honest calculation of when multi-carrier makes economic sense.
Sendcloud, Shipstation or Karl? Decision guide for Shopify shops
Three shipping apps, three philosophies. Which one fits your shop profile and what to check before you commit.
Scan-to-Label in 5 seconds: Engineering behind the speed USP
How Karl achieves scan-to-label under 5 seconds: webhook architecture, routing cache and zero-click printers. Tech deep-dive.