> ## Documentation Index
> Fetch the complete documentation index at: https://docs.invopop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Documentation

> Invopop helps you issue, receive, and process business documents—such as invoices and receipts—in compliance with local tax regulations across our supported countries

Think of **Invopop** as a translation engine for business documents. Our [API](/api-ref/introduction) accepts invoices in a single, universal format [GOBL](https://docs.gobl.org) and converts them into the local format, forwarding them to the customer and tax authorities as needed. We also support receiving incoming invoices from local networks or providers such as Peppol, converting them to the same universal format.

Invopop doesn't just handle invoices—we support payment receipts, purchase orders, delivery notes, and more. All documents use [GOBL (Go Business Language)](https://gobl.org/), our open-source universal format. This means you only need to integrate once with Invopop-we manage the complexity of localization.

<Columns cols="3">
  <Card title="Get Started (you are here)" icon="compass">
    Learn how Invopop works and review country specific legislation.
  </Card>

  <Card title="Console & Admin" icon="sidebar" href="/console/">
    In Console you will create workflows, debug jobs, edit documents and more.
  </Card>

  <Card title="Guides" icon="map" href="/guides/">
    Tutorials guide you from start to finish for common tasks in Invopop.
  </Card>

  <Card title="Apps" icon="app-store" href="/apps/">
    Extend core functionality and give support for countries' regimes.
  </Card>

  <Card title="API Reference" icon="code" href="/api-ref/">
    Explore technical details and reference material for the Invopop API.
  </Card>
</Columns>

## First Steps

If you're new to Invopop, we recommend the following reads:

<CardGroup cols="3">
  <Card title="Quickstart" icon="rocket" href="/introduction/glossary">
    Sign up instructions and getting your first sandbox working
  </Card>

  <Card title="GOBL" icon="code" href="https://docs.gobl.org">
    The open source format to simplify structured documents.
  </Card>

  <Card title="Console overview" icon="sidebar" href="/introduction/glossary">
    The web UI for our API. Create workflows, debug jobs, edit documents and more.
  </Card>
</CardGroup>

## Highlights

<CardGroup cols="3">
  <Card title="API Reference" icon="webhook" href="/api-ref/introduction">
    Five services (Silo, Transform, Sequences, Access and Utils) for each problem domain.
  </Card>

  <Card title="Idempotence" icon="rotate-right" href="/api-ref/idempotency">
    Operations with the same input data, when repeated, should provide exactly the same result.
  </Card>

  <Card title="White Label" icon="tag" href="/guides/use-cases/white-label">
    Provide transparent e-invoicing to your customers without them knowing you use us.
  </Card>

  <Card title="Workflows" icon="tag" href="/guides/features/workflows">
    Automate and streamline processes related to document handling.
  </Card>

  <Card title="PDF Invoice" icon="file-lines" href="/guides/features/pdf-invoice">
    Generate tax-compliant PDF invoices you can send to your customers.
  </Card>

  <Card title="Authentication" icon="tag" href="/guides/features/authentication">
    Generate an authentication token to start using the Invopop API.
  </Card>
</CardGroup>