Ashwin (Ash)
Ash is the founder of ASHDOCS. He builds the invoice and PDF APIs and the Zapier, Make and n8n connections that no-code builders use to generate documents from their data.
Posts by Ashwin (Ash)
What Is an Invoice?
What is an invoice? A seller's request for payment. See a labeled example, required fields, invoice vs receipt vs bill, invoice types and payment terms.
What Is an Invoice Number?
What is an invoice number? The unique ID on every invoice. See 5 formats with examples, where to find it, US rules, and how to fix skips and duplicates.
PDF REST API: Generate a PDF With One Request
Generate PDFs from HTML or JSON with a PDF REST API: curl, Node and Python code, page-break fixes, and 2026 pricing from ten vendors to compare.
How to Send an Invoice
How to send an invoice by email or payment link, with a copy-paste invoice email template and a follow-up schedule to help you get paid on time.
Contractor Invoice Template (Free Word, Excel, PDF)
Download a free contractor invoice template in Word, Excel or PDF, with a filled-in example: labor, materials, change orders, retainage and sales tax.