PDF Blocks
PricingSupport
Start Free
Go to Page
768,355,402 pages processed since 2019

The building blocks for PDF automation

Secure and reliable PDF tools for businesses and power users, integrated with the platforms you already use.

Start for freeRead the docs

Free plan available · No credit card required

Processing documents for

Unilever logoStryker logoNFL logoHolland & Barrett logoErmenegildo Zegna logoHitachi logoCemex logoBank Mandiri logoThe Kennedy Center logoNational University of Singapore logo

An action for everything

A growing catalog of PDF operations, ready to call. Each one runs on the API and in the connectors that support it.

Merge documentsCombine documents into a single PDF.
Add passwordEncrypt the document so a password is required to open it.
Add restrictionsBlock printing, copying, or editing while the document stays readable.
Add text watermarkStamp a notice like Confidential across every page, styled your way.
Add image watermarkPlace your logo or a stamp image on every page.
Split by page countBreak a document into files of a set number of pages each.
Split by file sizeBreak a document into files that each stay under a size limit.
A sample of what PDF Blocks can do. The catalog keeps growing.Show all 17 actions →

One action, many ways to run it

The same watermark, as an API call or a step in the no-code platform your team already uses.

REST APIany language
$ curl api.pdfblocks.com/v1/add_text_watermark \
-H "X-API-Key: •••" \
-F file=@contract.pdf \
-F line_1="Confidential" \
-o watermarked.pdf
→ 200 OK · application/pdf · saved watermarked.pdf
Power Automate

Drop PDF steps into any Microsoft 365 flow: SharePoint, Outlook, Teams, and Dataverse.

View the docs
Zapier

Add PDF steps to any Zap, alongside thousands of other apps.

View the docs

Reliability you can build on

In seven years, we've never shipped a breaking change. And we're almost never down.

Live status →
99.99928%global uptime, measured over the last 90 days
Data residency

You decide where your documents are processed

Compliance rules and customer contracts often say a document may not leave a given country. Point your requests at that country's endpoint and processing stays inside it. Every region runs the full catalog, so choosing one costs you nothing.

RegionAPI endpointStatus
Globalhttps://api.pdfblocks.comLIVE
United Stateshttps://us.api.pdfblocks.comLIVE
US HIPAAhttps://hipaa.api.pdfblocks.comLIVE
Europehttps://eu.api.pdfblocks.comLIVE
United Kingdomhttps://uk.api.pdfblocks.comLIVE
Canadahttps://ca.api.pdfblocks.comLIVE
Australiahttps://au.api.pdfblocks.comLIVE
Japanhttps://jp.api.pdfblocks.comLIVE
Indiahttps://in.api.pdfblocks.comLIVE
Brazilhttps://br.api.pdfblocks.comLIVE
Security

In. Transformed.
Out. Gone.

We don't keep your documents, and we never use them to train AI. PDF Blocks is stateless by design: your file exists on our side only for the seconds it takes to process your request.

Read the security overview →
Zero retention
Your document is processed in memory and returned in the same response. It is never written to storage, so there is nothing to leak or delete.
Zero AI
No model reads your documents or trains on them. The pipeline is deterministic, with no AI in it to feed.
HIPAA ready
Dedicated US HIPAA endpoint to handle documents with PHI. Available on the Business plan with a signed BAA.

A hundred documents a month, free, forever.
Get started, read the docs, or ask a question.

No credit card required