The PDF API for Problem Solvers

Secure, reliable, and well-documented PDF tools made for developers.

Use PDF Blocks in your API
Use PDF Blocks in your API

The building blocks

A growing collection of PDF actions you can integrate to your workflow in minutes.

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Merge documents

Combine multiple PDF documents into a single PDF document.

Available: cloud self-hosted
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Add password

Protect a PDF document with a password to prevent unauthorized access.

Available: cloud self-hosted
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Add text watermark

Add a text watermark to a PDF document. Choose one of many watermark templates.

Available: cloud self-hosted
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Add image watermark

Add an image watermark to a PDF document.

Available: cloud self-hosted
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Remove password

Remove the password from an encrypted PDF document.

Available: cloud self-hosted
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Add restrictions

Add restrictions to prevent copying, printing, and modifying a PDF document.

Available: cloud self-hosted
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Remove restrictions

Remove all restrictions from a PDF document.

Available: cloud self-hosted
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Extract pages

Extract one or more pages from a PDF document.

Available: cloud self-hosted
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Remove pages

Remove one or more pages from a PDF document.

Available: cloud self-hosted
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Rotate pages

Rotate one or more pages in a PDF document.

Available: cloud self-hosted
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Reverse pages

Reverse the order of the pages of a PDF document.

Available: cloud self-hosted
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Remove signatures

Remove the signatures from a PDF document.

Available: cloud self-hosted

Features

Security First

The transmission of your documents is protected with enterprise-grade encryption, and we never ever store your documents.

PDF Blocks Security →

Reliable

We offer a 99.99% service-level agreement backed by our highly-available architecture with six datacenters on two continents.

Historic uptime →

Data Residency

Choose to handle your documents exclusively in servers located in Europe or in the US to comply with data location requirements.

Your Own PDF Server

Process your highly sensitive documents in a PDF server of your own. No technical knowledge required.

Self-hosted PDF server →

High Throughput

Built for heavy-duty use, our load-balanced infrastructure can handle thousands of documents per second.

Blazing Fast

Over 95% of all PDF documents we process are ready in less than one second. Most are done in less than 100 ms.

Direct Support

You get direct access to the engineers who built the product. We value your time, so we give precise and actionable answers.