Your input & output PDF service

Fill PDF forms with one simple API call. Integrate easily with no-code apps.

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The first 10 PDFs are free. After that you pay only for what you use.

How it works

Filling PDF Forms

1. Upload a PDF including a form. PDFlib.io automatically identifies all fields and creates an API endpoint for filling the PDF.

2. Call the endpoint with a json body of the data you want to fill the PDF form with.

3. Get the filled PDF as a direct response to the API call. It's as easy as that!


Pay only for what you use! PDFlib.io scales with your business.
The first 10 PDFs are free to get you setup.
PDFlib.io is cloud-scaling and integrates with your low-code and no-code platform.


The first 10 PDFs are free


$0.249 per PDF

Slide to see your monthly price:

Costs: $2.49 / month


Need 100+ PDFs per month?
Contact us with your expected volume for a personalized offer.


How does PDFlib.io work?

PDFlib.io provides a service for automating PDF tasks at scale. We currently support filling PDF forms. You simply upload a template PDF and send data to your personal API endpoint from your app (no-code, low-code, or code). You'll get the filled PDF back momentarily. It's that easy! We have a detailed "How to" once you're logged in.

What is a PDF form?

PDF forms are the way to add custom structured data to a PDF template. Checkout the official documentation here. Creating fillable PDF forms is easy.

What can PDFlib.io be used for?

Our customers use PDFlib.io for a wide variety of business needs. Some examples include:

  1. Prefilling customer data in forms needed for third parties.
  2. Generating custom, company-branded invoices.
  3. PDFs for regular archiving required by regulators, for auditors and for internal use.
  4. Signature-ready project reviews and proposals.
  5. Marketing PDFs for your partners.
How does billing work?

You'll pay only for what you use in our pay-as-you-go plan. Billing is monthly at the end of a month. If your payment method fails to settle at the end of a month, we reserve the right to lock your account to avoid financial damage to our service. We use Stripe as a payment processor and offer all popular payment options as well as business invoices for your taxation needs.

Is my data safe with PDFlib.io?

Yes, we fullfil the highest security standards. We use the latest software for our service and run on tested cloud infrastructure. We do not save data you send to your PDFlib.io API endpoint and we do not save the generated PDFs after they are returned to you.

πŸ“§ If you have a question that is not answered above, reach out at support@pdflib.io.