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Alternatives

Products that do what DocSpring does

POST JSON; GET PDF - Fill, generate, and sign PDFs via API

  1. 1

    The easiest way to programmatically populate any PDF

    2020

  2. 2PA

    Hi HN, Arek here. We’re super excited to officially launch PSPDFKit API [1]. PSPDFKit API is a collection of HTTP APIs that enable you to convert, generate, and edit documents without running any service on your infrastructure. What differentiates our API from others is that you can chain together multiple “actions” as part of a single API request. For example, you can convert, OCR, watermark, edit, and flatten a document — all in one call. Available actions [2]: - PDF Generator - PDF Converter - Image Converter - OCR - Watermark - Merge - Split - Duplicate - Delete - Flatten Our…

    2022

  3. 3
    PDFShift391

    Convert any HTML to PDF with a single POST request.

    2018

  4. 4

    Create PDF documents from data and templates

    2024

  5. 5AA

    2017 · formapi.io

  6. 6

    A simple way to write, maintain, and share documentation

    2021

  7. 7PJ

    Hi HN, Nick here. We're super excited to officially launch PDF.js Express [1]. PDF.js Express wraps a modern React UI around the PDF.js rendering engine to enable PDF annotation, form filling, and signing inside your web app. We've also made some improvements to PDF.js text search, and taken a different approach to how the viewer uses the PDF.js rendering API, resulting in sharp graphics at any zoom magnification [2]. Based on our research, more than 70% of those who try to implement these features on top of PDF.js find it too difficult or time-intensive [3]. For those who are successful,…

    2020

  8. 8
    FormAPI230

    Stripe for PDFs

    2017

  9. 9

    Document generation API

    2022

  10. 10

    Every API you need to automate document workflows

    2024

  11. 11DO

    Documind is an open-source tool that turns documents into structured data using AI. What it does: - Extracts specific data from PDFs based on your custom schema - Returns clean, structured JSON that's ready to use - Works with just a PDF link + your schema definition Just run npm install documind to get started.

    2024 · github.com

  12. 12

    Design and generate pixel-perfect PDF documents in minutes

    2022

  13. 13

    Twilio for PDFs: esign, fill, generate PDFs with one API

    2021

  14. 14

    The PDF Generation API for Developers

    Nov 2025 · docstron.com

  15. 15

    Generate images and PDFs with simple API

    2021

  16. 16

    Parse PDF to Json with AI and BYO-JSON-Schema

    2025

  17. 17SD
  18. 18TA

    Hello HN! It kept surprising me how much of a hassle it is to generate a PDF with decent HTML5 rendering from my SaaS apps. I tried several free libs and APIs but ended up with botched rendering a lot of times. So I set out to simplify this chore by creating an AWS hosted HTML to PDF conversion API that's based on Chrome. This API will allow a dev to just send the HTML to our API and get a PDF in response without having to worry about running and managing Chrome somewhere in their infra. I just finished the first version of my landing page and hosted pdf generation API…

    2018

  19. 19
    Docuest18

    API-based PDF document generator

    2025

  20. 20
    Fill84

    The smart way to fill, send, sign & store PDF's

    2019

  21. 21

    Generate documents from your app the easy way.

    2020

  22. 22

    Add text, watermarks, and fill forms in pdfs with ease | API

    2025

  23. 23

    Generate beautiful invoices from json

    2025

  24. 24SC

    Hi HN, I'm a freelance developer, and I built SnazzyPDF in my spare time to solve a problem I encountered frequently: converting structured data into PDF documents. The existing solutions I found either required manually creating a template or forced you to transform your data into a specific structure. I wanted a tool where you could simply input arbitrary JSON data and get a decent-looking document out. That's why I built SnazzyPDF. * Works with any JSON: No need to restructure your data. SnazzyPDF handles (almost) any JSON data, including deeply nested arrays and objects. * Use REST API…

    2024 · snazzypdf.com

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