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JSON API to DOCX for reports: 15 document generation tools

For reports, we list 15 tools that turn JSON sent to an API into a Word document. The lowest paid starting price is $19 a month, from SourceToDocs. The first three in our order are Formstack Documents, Carbone and Fluent (Windward).

Tools
15
With USD price
9, from $19
Free tier
10
Direct / via Zapier
14 / 1
Checked
20 Oct 2026
  1. 01
    Formstack Documents Editor's pick formstack.com

    Formerly WebMerge. Only in Suite plan, $250/mo paid annually, 250 deliveries/mo.

    Outputs PDF, DOCX, PPTX, e-sign documents Template Word, PDF form, Visual builder Also reads Salesforce, HubSpot, Airtable, built-in forms +2 G2 4.5 (148)
    $250 / mo
  2. 02
    Carbone Editor's pick carbone.io

    Priced in EUR: Essential EUR 29/mo (EUR 26 annual).

    Outputs PDF, DOCX, XLSX, PPTX, HTML Template Word Also reads Airtable, Zapier/Make/n8n
    $28 EUR 26, converted
  3. 03
    Fluent (Windward) windwardstudios.com

    Formerly Windward Studios, acquired by PDFTron (now Apryse).

    Outputs PDF, DOCX, XLSX, PPTX, HTML Template Word Also reads Salesforce, Excel G2 4.4 (77)
    On request
  4. 04
    SourceToDocs sourcetodocs.com

    Data to Google Slides and Docs.

    Outputs Google Slides, Google Docs, PDF, PPTX, DOCX, HTML Template Google Docs Also reads Airtable, Google Sheets, CSV
    $19 / mo, cheapest here
  5. 05
    Syncfusion Document SDK syncfusion.com

    $1,199/developer/yr (computed $99.92/mo).

    Outputs PDF, DOCX, XLSX, PPTX Template Word
    $99.92 / mo
  6. 06
    Templafy templafy.com

    AI document agents in Microsoft Office.

    Outputs PPTX, DOCX, PDF Template Word Also reads Salesforce
    $40 / mo
  7. 07
    Docmosis docmosis.com

    Cloud Professional $49/mo, 4,000+ pages.

    Outputs PDF, DOCX, HTML Template Word
    $49 / mo
  8. 08
    docxtemplater docxtemplater.com

    JS library, MIT/GPLv3 core.

    Outputs DOCX, PPTX, XLSX Template Word
    $45 EUR 500/yr, converted
  9. 09
    Foxit Document Generation API developer-api.foxit.com

    Word template plus JSON. Startup $1,750/yr (computed $145.83/mo).

    Outputs PDF, DOCX Template Word
    $145.83 / mo
  10. 10
    jsreport jsreport.net

    Free up to 5 templates. Enterprise $395/yr single instance.

    Outputs PDF, DOCX, XLSX, PPTX, HTML Template HTML
    On request free tier
  11. 11
    Aspose.Words products.aspose.com

    SDK. Developer Small Business license $1,679 perpetual.

    Outputs PDF, DOCX, HTML, Markdown Template Word
    On request
  12. 12
    PDF4me pdf4me.com

    Ynoox GmbH. Generate Documents endpoint.

    Outputs PDF, DOCX Template Word Also reads Zapier/Make/n8n
    Not published free tier
12 of 15 shown Show the other 3Hide the other 3
  1. 13
    Adobe Document Generation API developer.adobe.com

    Part of Adobe PDF Services.

    Outputs PDF, DOCX Template Word
    On request free tier
  2. 14
    Wordize wordize.com

    Programmatic document processing SDK.

    Outputs DOCX, PDF Template Word
    Not published
  3. 15
    DocuGenerate via Zapier docugenerate.com

    Word templates plus JSON.

    Outputs PDF, DOCX Template Word Also reads Coda, Zapier/Make/n8n
    $19 / mo

What differs for JSON API

For reports delivered as DOCX, templates are built in Word (13), Google Docs (1) and HTML (1). Among them, 1 needs Zapier, Make or n8n to read JSON sent to an API, so it sits after the tools with a direct connection. Of these, 10 have a free tier.

Besides DOCX, these tools for reports also write PDF (14), PPTX (8) and HTML (6). Your own code decides when to call the API, so a document can be built on any event. Published starting prices run from $19 to $250 a month, the top end from Formstack Documents. Prices were checked on 20 Oct 2026.

Nearby pages

Broader list: JSON API to DOCX (29 tools).

Related lists: JSON API to DOCX for contracts (22 tools), JSON API to DOCX for letters (15), JSON API to DOCX for invoices (13), JSON API to DOCX for proposals (7), JSON API to PDF for reports (35), JSON API to PPTX for reports (9), JSON API to HTML for reports (6), JSON API to XLSX for reports (6).

How to generate PDFs from a JSON API: a step-by-step guide, updated 21 Oct 2026.

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