[FIELD NOTES] The WebAppick journal

What we've learned shipping to 100,000+ stores.

Engineering writing, channel guides, compliance updates, and the occasional opinion. Written by the people who build the plugins.

WooCommerce Invoice · 5 min

How to Create and Customize WooCommerce Invoice Number

WooCommerce does not generate structured invoice numbers on its own. To create and customize a WooCommerce invoice number, install an invoicing plugin such as…

WooCommerce · 9 min

How to Set Up a WooCommerce Order Confirmation Email

To set up a WooCommerce order confirmation email, enable the Processing order email under WooCommerce → Settings → Emails, then customize its header, footer,…

Google Merchant · 8 min

Google Merchant Center Feed Templates: Free Download & Examples (CSV & XML)

The fastest way to launch your eCommerce products on Google Shopping is with an accurately formatted product data feed. Whether you want to build…

WooCommerce · 16 min

How to Add Tax in WooCommerce: A Step-by-Step Guide

Adding tax in WooCommerce is simple—just enable the built-in tax system from WooCommerce → Settings → General by checking Enable Taxes and Tax Calculations.…

WooCommerce Invoice · 5 min

How to Attach a PDF Invoice to a WooCommerce Order Email (4 Steps)

To attach a PDF invoice to a WooCommerce order email, install the Challan invoice plugin, turn on invoicing in its settings, choose an invoice…

WooCommerce Invoice · 7 min

How to add and display a WooCommerce invoice payment method

To add a payment method to a WooCommerce invoice, enable your chosen gateways under WooCommerce > Settings > Payments, then use an invoicing plugin…

Google Shopping · 13 min

Google Shopping Image Requirements: Sizes, Formats, Rules and the 500 x 500 Minimum (2026)

Google Shopping image requirements: sizes, formats and rules, plus the 500 x 500 minimum from Jan 31, 2027. How to send compliant images from…

WooCommerce Invoice · 7 min

How to Add Custom Fields to WooCommerce PDF Invoices

To add custom fields to a WooCommerce PDF invoice, install an invoicing plugin such as Challan, then use its Add Order Meta, Add Product…

WooCommerce Invoice · 6 min

How to Print WooCommerce Invoices (Free Plugin Included)

WooCommerce doesn’t have a built-in way to print invoices, so you’ll need a plugin. This guide uses Challan, a free WooCommerce invoice and packing…

Snapchat · 6 min

How to Create a Snapchat Product Feed & Catalog

To create a Snapchat product feed from WooCommerce, install the CTX Feed plugin, select the Snapchat template, fill in the country, file type, and…

WooCommerce · 19 min

A Guide to WooCommerce Direct Checkout Link

Cart abandonment – the nightmare every online store owner fears. It is estimated that online retailers lose over $18 billion in revenue each year…

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Channel-spec changes, plugin releases, the occasional deep dive on something we broke.