JSON API to PDF for certificates: 15 document generation tools

For certificates, we list 15 tools that turn JSON sent to an API into a PDF. The lowest paid starting price is $5 a month after conversion to dollars, from PDFMonkey. The first three in our order are DocsAutomator, PDFMonkey and APITemplate.io.

Tools: 15
With USD price: 13, from $5
Free tier: 9
Direct / via Zapier: 11 / 4
Checked: 20 Oct 2026

01

DocsAutomator Editor's pick docsautomator.co

Professional $19/mo yearly, $29 monthly.

Outputs PDF, Google Docs, email Template Google Docs, Word, PDF form Also reads Airtable, Notion, Google Sheets, Google Forms +2

$19 / mo
02

PDFMonkey Editor's pick pdfmonkey.io

EUR pricing: Starter EUR 5/mo, 300 docs.

Outputs PDF Template HTML Also reads Zapier/Make/n8n

$5 EUR 5, converted
03

APITemplate.io apitemplate.io

PDF Basic $19 or $24 (billing labels unclear).

Outputs PDF Template Visual builder, HTML Also reads Airtable, Zapier/Make/n8n

$19 / mo
04

Bannerbear bannerbear.com

Image, PDF and video API.

Outputs PDF Template Visual builder Also reads Airtable, Zapier/Make/n8n

$49 / mo
05

CraftMyPDF craftmypdf.com

Lite $29/mo, 1,200 PDFs. Free 50/mo.

Outputs PDF Template Visual builder Also reads Airtable, Zapier/Make/n8n

$29 / mo
06

Orshot orshot.com

Image, PDF and video render.

Outputs PDF Template Visual builder Also reads Airtable, Zapier/Make/n8n

$39 / mo
07

PDF Generator API pdfgeneratorapi.com

Priced in EUR, annual only: Creator EUR 80/yr.

Outputs PDF Template Visual builder Also reads Airtable, Zapier/Make/n8n

$7 EUR 80/yr, converted
08

Templated.io templated.io

Image, PDF and MP4 render API.

Outputs PDF Template Visual builder Also reads Airtable, Zapier/Make/n8n

$29 / mo
09

PDFBolt pdfbolt.com

HTML/Handlebars templates.

Outputs PDF Template HTML

$19 / mo
10

Placid placid.app

Creative automation for images, PDFs, video.

Outputs PDF Template Visual builder Also reads Airtable, Zapier/Make/n8n

Not published
11

pdfme pdfme.com

MIT TypeScript library with WYSIWYG template designer.

Outputs PDF Template Visual builder

Free
12

Documentero via Zapier documentero.com

Micro $19.50/mo shown; price formatting unclear on page.

Outputs DOCX, XLSX, PDF Template Word Also reads Google Sheets, CSV, Excel, Zapier/Make/n8n +1

$19.50 / mo

12 of 15 shown Show the other 3Hide the other 3

13

DocuGenerate via Zapier docugenerate.com

Word templates plus JSON.

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

$19 / mo
14

Eledo via Zapier eledo.online

EUR pricing: Breeze EUR 6.90/mo.

Outputs PDF Template Visual builder Also reads Zapier/Make/n8n

$7 EUR 6.90, converted
15

pdf noodle via Zapier pdfnoodle.com

Starter $35/mo, 3,000 PDFs.

Outputs PDF Template Visual builder, HTML Also reads Zapier/Make/n8n

$35 / mo

What differs for JSON API

For certificates delivered as PDF, templates are built in a visual builder (10), HTML (4) and Word (3). Among them, 4 need Zapier, Make or n8n to read JSON sent to an API, so they sit after the tools with a direct connection. Of these, 9 have a free tier.

Besides PDF, these tools for certificates also write DOCX (2), Google Docs (1) and XLSX (1). Your own code decides when to call the API, so a document can be built on any event. Published starting prices run from $5 to $49 a month, the top end from Bannerbear. Prices were checked on 20 Oct 2026.

Nearby pages

Broader list: JSON API to PDF (63 tools).

Related lists: JSON API to PDF for invoices (35 tools), JSON API to PDF for reports (35), JSON API to PDF for contracts (32), JSON API to PDF for letters (15).

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

All tools, with filters for source, output, use case and price.

Not sure which one fits? Answer three questions and get three tools back, scored by the rules on the methodology page.

Find my tool