pdfik

Official Python SDK for PDFik — the asynchronous URL/HTML-to-PDF API.

Submit a public URL or raw HTML, get a job id back, and receive an HMAC-signed webhook (or poll) when the PDF is ready. Rendering runs on sandboxed headless Chromium, so modern CSS, web fonts and JavaScript-heavy pages come out the way they look in the browser.

Features

• Type Safety: Type hints for all options and response objects.
• Sync & Async: Exposes both PdfikClient and AsyncPdfikClient using the modern httpx engine.
• Auto Retry: Automatic exponential backoff for 5xx and 429 (Rate Limit) errors powered by tenacity.
• DX Affordances: Built-in polling logic (wait_for_job) and file download helpers.

Installation

pip install pdfik

Quick Start

Convert public URL to PDF (Sync)

from pdfik import PdfikClient, PdfOptions, MarginOptions

# Initialize the client
client = PdfikClient(api_key="sk_live_...")

# 1. Submit the URL to be rendered
job = client.url_to_pdf(
    "https://example.com",
    options=PdfOptions(
        format="A4",
        landscape=False,
        print_background=True,
        margin=MarginOptions(top="10mm", bottom="10mm")
    )
)

print(f"Job created: {job.job_id}. Waiting for rendering...")

# 2. Poll until the job completes
result = client.wait_for_job(job.job_id)
print(f"Job finished! Pages: {result.pages_count}")

# 3. Download the PDF bytes
pdf_bytes = client.download_pdf(job.job_id)

with open("output.pdf", "wb") as f:
    f.write(pdf_bytes)
print("PDF saved to output.pdf")

# Close connection pool
client.close()

Convert raw HTML to PDF (Async)

import asyncio
from pdfik import AsyncPdfikClient, PdfOptions

async def main():
    async with AsyncPdfikClient(api_key="sk_live_...") as client:
        job = await client.html_to_pdf(
            "<h1>Hello World</h1><p>Sent from PDFik Python SDK</p>",
            options=PdfOptions(format="Letter")
        )
        
        result = await client.wait_for_job(job.job_id)
        print(f"Job finished! Status: {result.status}")
        
        pdf_bytes = await client.download_pdf(job.job_id)

asyncio.run(main())

Get the direct download URL

Get the direct API download URL for the generated PDF (requires the "X-API-Key" header to download):

file_info = client.get_file_url(job.job_id)
print(f"Direct Download URL: {file_info.download_url}")

Test mode

Pass test=True to run a job through the full pipeline (statuses, webhook, download) without real rendering — the download returns a small sample PDF. Test jobs are free (no PDF or byte quota is debited) and rate-limited instead: 60 test calls per minute and 2,000 per day per account. Job status and webhook payloads always carry test: true|false, so you can safely exercise your integration end to end:

job = client.url_to_pdf("https://example.com", test=True)
result = client.wait_for_job(job.job_id)
print(result.test)        # True
print(result.expires_at)  # e.g. "2026-08-05T12:00:00Z"

pdf_bytes = client.download_pdf(job.job_id)  # sample PDF

Factur-X e-invoices

Turn a UN/CEFACT Cross-Industry-Invoice XML into a Factur-X / ZUGFeRD hybrid: a human-readable PDF/A-3 with the XML embedded as factur-x.xml. The XML is validated against the official XSD of the declared profile before any quota is spent; the output is validated with veraPDF and Mustangproject. Schema-valid does not mean tax-compliant — the invoice content is the caller's responsibility. Available on every plan;

from pdfik import PdfikClient

client = PdfikClient(api_key="sk_live_...")

# The visual invoice is built from a block template (saved in the dashboard,
# passed inline as `template=`, or the built-in default when both are omitted).
job = client.einvoice_to_pdf(
    cii_xml,                      # your CII XML string, UTF-8, up to 1 MB
    profile="en16931",            # minimum | basicwl | basic | en16931 | extended
    template_id="c0ffee00-...",   # optional; mutually exclusive with template=
)
result = client.wait_for_job(job.job_id)
pdf_bytes = client.download_pdf(job.job_id)

Alternatively, render your own page as the visual half — pass einvoice= to url_to_pdf / html_to_pdf and the output is normalized to PDF/A-3 with the XML embedded (not combinable with user_password or compression, which break PDF/A):

from pdfik import EInvoiceOptions

job = client.html_to_pdf(
    invoice_html,
    einvoice=EInvoiceOptions(xml=cii_xml, profile="en16931"),
)

Profiles minimum and basicwl carry accompanying data only and are not a legally sufficient e-invoice. Error codes: einvoice-xml-invalid, einvoice-options-conflict, einvoice-template-not-found, payload-too-large-for-queue.

Limits, retention and error codes

• Generated volume per month (byte quota, counts rendered output only — downloads are free): Free 0.5 GB, Starter 10 GB, Pro 50 GB, Business 300 GB. Business plans can purchase additional +1 GB blocks from the dashboard. Exceeding the quota returns 429 (quota-bytes-exceeded).
• File size: up to 150 MB per PDF on every plan — contact support if you need more. A larger render fails the job with FILE_TOO_LARGE (file-too-large).
• Retention: each file is available for download for 24 hours after the job finishes; the exact deadline is the expires_at field in the job status and webhook payload. After that the download returns 410 (file-expired).
• Downloads: at most 3 download attempts per file (counted when the stream starts); after that the API returns 429 (download-attempts-exhausted) — re-render the file or contact support. Only 1 download stream may be active at a time; a concurrent request returns 429 (download-busy) — wait ~10 seconds and retry, it does not burn an attempt.

Handling Webhooks

If you specify webhook_url in the options of url_to_pdf or html_to_pdf, PDFik will send an HTTP POST request to your server when the rendering job is finished.

You should verify the authenticity of the webhook by validating the signature. We provide a static helper verify_webhook_signature in PdfikClient for this purpose.

During a secret rotation both the new and the previous secret verify for the overlap window you pick in the dashboard (1 hour to 5 days, or none at all), so check the new one first and fall back to the old one while you roll your receivers out.

Custom delivery headers (e.g. a Cloudflare Access service token) are configured once on the dashboard Webhooks page and attached to every delivery — nothing to pass per request.

Example (FastAPI):

from fastapi import FastAPI, Request, HTTPException
from pdfik import PdfikClient

app = FastAPI()

# Get your webhook secret from the PDFik Dashboard
WEBHOOK_SECRET = "whsec_..."

@app.post("/webhook")
async def handle_webhook(request: Request):
    # Retrieve headers
    headers = dict(request.headers)
    
    # Retrieve the raw payload bytes
    raw_body = await request.body()
    
    # Verify signature
    is_valid = PdfikClient.verify_webhook_signature(raw_body, headers, WEBHOOK_SECRET)
    
    if not is_valid:
        raise HTTPException(status_code=400, detail="Invalid signature")
        
    # Process event
    event = await request.json()
    print(f"Received webhook event: {event.get('event_type')} for job: {event.get('job_id')}")
    
    return {"received": True}

License

MIT License.