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PDF Blocks

The building blocks for PDF automation

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PDF Blocks is a PDF processing service that handles operations such as merging documents, adding passwords and restrictions, applying text or image watermarks, and splitting files by page count or file size. Documents are processed in memory and returned in the same request, with no storage of the original file.

The service exposes a REST API alongside connectors for Power Automate and Zapier, so the same operations can run in code or in no-code workflows. Processing can be pinned to a specific region, including a dedicated US HIPAA endpoint. The catalog includes 17 actions, and the pipeline is deterministic with no AI involved.

PDF Blocks is aimed at businesses and power users automating document workflows. It offers a free plan with a monthly document allowance and no credit card requirement, plus paid tiers scaled by monthly document volume, with monthly or yearly billing. Paid plans add more processing regions, an uptime SLA, priority support, and a HIPAA BAA on Business plans.

12 alternatives to PDF Blocks

Ranked by how well each tool replaces PDF Blocks: shared features, audience, price and popularity.

  1. Zapier

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    Covers 1 of 13 key features and starts cheaper.

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  2. PDF-app.net

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  3. PDF4me

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    Covers 8 of 13 key features and starts cheaper.

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  6. Sheetgo

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    Covers 8 of 13 key features and starts cheaper.

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  7. DocuQueue

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    Covers 7 of 13 key features and starts cheaper.

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  8. Lido

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    Covers 7 of 13 key features and starts cheaper.

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  9. Parabola (Prowork)

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    Covers 6 of 13 key features.

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  10. iLovePDF

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    Covers 3 of 13 key features and starts cheaper.

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  11. pdfapihub

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    Covers 10 of 13 key features.

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  12. PDF Maker - Automate Documents

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    Covers 9 of 13 key features and starts cheaper.

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