Turn invoice PDFs into structured JSON or CSV with one API call. Pull vendor fields, invoice numbers, dates, totals, tax, and line items into Airtable, n8n, Sheets, bookkeeping workflows, or your own app.
browser demo for evaluation · developer plan £29/month · business plan £99/month
Usually the problem is not “how do I view a PDF?” It is “how do I stop typing invoice rows into the same spreadsheet for the thousandth time?”
Upload an invoice PDF to the API from your script, workflow tool, or internal app.
Receive vendor data, dates, tax, totals, currency, and line items instead of a messy text dump.
Write the result into Airtable, Google Sheets, QuickBooks import prep, AP review queues, or your own database.
This page exists for the API-shaped use case, not the no-code browser demo.
The response is built for real invoice workflows where item rows matter, not just the grand total and a supplier name.
Clean structured fields are easier to validate, store, and route than raw OCR text pretending to be useful.
Paid workflows support CSV export paths too, which is handy when the final destination is still a spreadsheet or import tool.
Good fit for n8n, Zapier code steps, Python scripts, Node backends, and internal finance tooling.
curl -X POST https://your-api-base.example/extract \
-H "X-API-Key: YOUR_API_KEY" \
-F "file=@invoice.pdf"
{
"success": true,
"data": {
"vendor": { "name": "Acme Supplies Ltd" },
"invoice_number": "INV-2026-0042",
"invoice_date": "2026-04-01",
"line_items": [
{ "description": "Widget Pro", "qty": 10, "amount": 450.00 },
{ "description": "Setup Fee", "qty": 1, "amount": 150.00 }
],
"subtotal": 600.00,
"tax": 120.00,
"total": 720.00,
"currency": "GBP"
}
}The buyer intent here is usually one of these four things.
Supplier PDFs arrive by email and someone still has to pull the rows out by hand.
You need structured invoice data inside a tool the team already uses, not a fresh platform migration.
You want to prove the workflow before signing up for a heavier document-AI stack.
Developers need an extraction layer they can call from scripts, jobs, or admin tools.
Searches like “invoice pdf to csv api” are unusually high intent because the person typing them already knows what they want. They are not browsing for a vague AI story. They want a PDF to become structured invoice data that another system can actually consume.
That usually means one of two outcomes. Either they want JSON so an app or workflow can process the invoice properly, or they want CSV because the next stop is a spreadsheet, import template, or bookkeeping review step. In both cases, the actual pain is the same: line items, dates, totals, and vendor fields are trapped inside a PDF and somebody is losing time getting them back out.
Useful Patch is aimed at that unglamorous but very real job. The browser tool is there for quick manual testing. The API exists when the workflow needs to be repeatable.
Most people are not comparing against some perfect competitor. They are comparing against manual entry, generic OCR text, or a bigger platform than they actually need.
| criteria | useful patch api | manual / generic fallback |
|---|---|---|
| invoice structure | vendor fields, totals, dates, line items | usually raw text or copy-paste cleanup |
| developer fit | callable from scripts and workflow tools | someone still has to intervene manually |
| trial path | browser demo today, production plans when ready | often unclear until after setup |
| spreadsheet handoff | json-first with csv-ready workflows | merged cells, broken rows, lost context |
Straight from the current API page, because making people guess pricing is stupid.
instant proof-of-fit in the browser
100 extractions per month
1,000 extractions per month
Structured invoice data including vendor fields, invoice number, dates, totals, tax, currency, and line items. The API is JSON-first, and paid plans also support CSV-oriented workflows.
Yes. If you want a quick non-code sanity check first, the browser invoice tool is at /invoice/. Production API plans are on /api/, and self-serve evaluation keys will return once the public API domain is finished.
Mostly. If you just want to drag in one PDF and grab a CSV, the browser tool is the simpler route. This page is for the repeatable workflow version.
That is the main reason to bother with a structured invoice API in the first place. Header fields alone do not solve accounts-payable grunt work.
Start with the browser demo if you want proof fast. Jump to the API page if you already know this needs to be wired into a real workflow.
open api page → try browser demo