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Invoice PDF API

Generate invoice PDFs your team can rely on.

Turn HTML or reusable templates into branded invoice and statement PDFs without browser workers, layout drift, or brittle export hacks.

Start trial Open quickstart

5 trial renders No card required Headers, footers, page numbers

POST /api/v1/render/pdf Invoice workflow

Template render invoice-standard

Recurring billing documents with line items, VAT, payment terms, and customer data merged at request time.

A4 portrait

Invoice total GBP 618.00

Line items and tax Kept together across pages

Delivery path Download, email, archive

Used for Invoices, statements, billing summaries

Input HTML or reusable templates with live data

Output Customer-facing PDFs with stable layout

A cleaner fit for SaaS billing flows, finance portals, account documents, and recurring customer statements.

The problem

Billing documents look simple until they start breaking in production.

Invoices and statements are customer-facing, operational, and often audit-relevant. When totals move, line items split badly, or billing exports drift under real data, the document flow quickly becomes harder to trust.

Totals and tax sections split awkwardly

Multi-page invoices are hard to read when key summary blocks land on the wrong page or detach from the line items they explain.

Layouts drift between local testing and real requests

Templates that look fine with sample data can stretch, wrap, and misalign once billing edge cases arrive in production.

Browser-based rendering becomes an operations issue

Workers, browser images, and tuning logic start sitting inside the billing system instead of staying out of the product team's way.

Customer-facing billing output needs to stay dependable

Invoices, account summaries, and statements carry commercial weight, so the rendering path needs to feel like part of a business-grade system.

Why DocRender

Keep invoice generation clean, branded, and easier to run.

DocRender is built for business documents where page structure, repeated layouts, and downstream handling matter more than generic file conversion.

Reusable invoice templates for recurring billing flows
Headers, footers, pagination, and branded output in the core path
Page-break control for line items, summaries, and account sections
Suitable for billing, finance, admin, and customer portal workflows

Page breaks under control

Keep invoice sections readable when documents stretch over multiple pages, rather than letting the render layer decide where finance content should split.

Reusable layouts for recurring invoice types

Standard invoices, monthly statements, and billing summaries can all follow one cleaner template workflow.

Branded PDFs that fit the product

Produce billing documents that match the rest of your customer experience instead of looking like an improvised print export.

One API contract for document output

Send HTML or a template with live data, then hand the finished file to download, email, storage, or account workflows downstream.

How it works

Move invoice rendering behind one predictable workflow.

Start with the invoice layout you already own, merge live billing data at request time, and return a PDF that is ready for customer delivery or internal handling.

Choose HTML or a reusable template

Launch with raw markup or standardise recurring invoice types behind reusable billing layouts.

Pass billing data with the request

Merge account details, dates, totals, tax, line items, and payment terms into the render call.

Return a finished invoice PDF

Stream it to the user, attach it to the billing record, email it, or store it for later retrieval.

SaaS invoice generation Monthly statements Billing summaries Account documents Finance portal exports

Code example

A typical invoice request sends a reusable template, account data, and a few file-level controls to the same render endpoint used across the rest of the site.

curl -X POST https://getdocrender.com/api/v1/render/pdf \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "templateId": "invoice-standard",
    "data": {
      "invoice_number": "INV-2048",
      "account_name": "Northfield Analytics",
      "period": "1-31 March 2026",
      "due_date": "2026-04-07",
      "line_items": [
        { "description": "Growth plan", "quantity": 1, "amount": "GBP 299.00" },
        { "description": "Additional seats", "quantity": 18, "amount": "GBP 216.00" }
      ],
      "subtotal": "GBP 515.00",
      "tax": "GBP 103.00",
      "total": "GBP 618.00"
    },
    "pageSize": "A4",
    "fileName": "invoice-INV-2048.pdf",
    "metadata": {
      "documentType": "invoice",
      "accountId": "acct_2048"
    }
  }'

Implementation confidence

Built for business documents, not generic file conversion.

The trust story here is practical: clear pricing, a real quickstart, template support, and a render path that is shaped around billing workflows rather than browser tricks.

Business-document positioning

DocRender is designed for invoices, statements, reports, contracts, and formal documents that need stable pagination and reliable output.

Templates plus live data

Keep reusable invoice layouts while still sending account-specific fields, totals, dates, and metadata per request.

Clear path to evaluation

Open the quickstart, use the JSON API, and test a real billing document flow before you commit to a paid plan.

No-card trial to start

Every account begins with 5 trial renders, which is enough to prove the workflow with your own invoice HTML or template data.

Start trial

Try one invoice flow before you rebuild the rest of billing.

Create an account, use the quickstart, and send a real invoice or statement request through the API. If the fit is right, pricing is waiting on the main product page.

5 trial renders No card required Docs, API, and pricing all available now

Start with one invoice template

Prove the layout, totals, and downstream handling on a real billing document before rolling further.

Move into statements and summaries

Once the render path is stable, extend the same pattern to statements, account documents, and portal exports.

Choose paid usage when volume is real

Use the pricing page once the billing workflow is proven and document volume becomes predictable.

Start trial Open quickstart

FAQ

Common questions about the invoice PDF API.

These are the practical questions teams usually ask when the billing flow is the first document use case they want to launch.

Can I use reusable invoice templates?

Yes. DocRender is built to work with HTML or reusable templates, which is useful when invoice layouts repeat across billing cycles, account tiers, or product lines.

How do headers, footers, and page numbers work?

Headers, footers, and pagination belong in the core business-document workflow, so you can keep invoice branding, document labels, and page numbering consistent across longer files.

Can DocRender handle multi-page invoices?

That is a key use case. The aim is to keep long invoices readable when line items, tax summaries, and payment details need to stay grouped sensibly over multiple pages.

Can I generate statements as well as invoices?

Yes. The same render path can support monthly statements, billing summaries, account documents, and similar finance outputs that need branded, repeatable PDF generation.

Can I test before committing to a paid plan?

Yes. Every account starts with 5 trial renders and no card required, so you can try the product with your own document flow before you move to a paid plan.