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formfeed (Python)

Client for the Formfeed API: template-based PDF and image generation. Sync and async, built on httpx, pydantic models, retries on 429 and 503 with the server's Retry-After, an Idempotency-Key on every render, typed errors and webhook verification.

pip install formfeed
from formfeed import Formfeed

client = Formfeed("ff_test_…")                      # region="us" or base_url="…" for other hosts
render = client.renders.create(template="invoice-de", data={"invoice": {"number": "2026-001"}})
open("invoice.pdf", "wb").write(client.renders.download(render))

job = client.renders.batch([{"data": d} for d in rows], template="invoice-de", zip=True)
job = client.jobs.wait_for(job.id)
from formfeed import AsyncFormfeed

async with AsyncFormfeed("ff_test_…") as client:
    render = await client.renders.create(html="<h1>Hello</h1>", output="png")

Word and PowerPoint:

# a template is a .docx or .pptx with tags such as {{ customer.name }} in its text
with open("offer.docx", "rb") as f:
    client.templates.create(name="Offer", slug="offer", kind="docx", engine="jinja2", file=f, publish=True)
filled = client.renders.create(template="offer", output="docx", data={"customer": {"name": "Olvarest GmbH"}})

# a new version with a new document; without file= the latest document is kept
with open("offer-v2.docx", "rb") as f:
    client.templates.create_version("offer", file=f, change_note="New terms")
docx = client.templates.version_file("offer", "latest")   # the document's bytes

# any office document to PDF (Word, Excel, PowerPoint, OpenDocument, RTF)
with open("report.xlsx", "rb") as f:
    pdf = client.pdf.convert(file=f, single_page_sheets=True)

Webhooks:

from formfeed import parse_webhook_event

event = parse_webhook_event(secret, request.headers["Webhook-Signature"], request.body)

Errors raise FormfeedError with code, status, problem and request_id. Templates: client.templates.all(), .version("invoice-de", "latest"), .create_version(...), .publish(...).

Documentation: https://docs.formfeed.dev/api/sdks/python

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