Alternatives

Products that do what Doppio does

HTML to PDF/image API

1. 1
   API Template▲118

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   2021

2. 2TA
   ThePDFApi, a Chrome Based PDF Generation API Hosted on AWS▲41

   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

3. 3
   Anvil PDF Filling API▲205

   The easiest way to programmatically populate any PDF

   2020

4. 4
   PDFMonkey▲164

   Automate your PDF generation, get the job done

   2023

5. 5
   Anvil PDF API▲185

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

   2021

6. 6
   PDF Hippo: Dynamic PDF API for Devs▲222

   Convert Excel templates into dynamic PDFs

   2023

7. 7
   PDF merge API▲98

   Create PDF documents from data and templates

   2024

8. 8
   Thumbnails Cloud▲117

   The simplest API for generating file thumbnails

   2019

9. 9
   TemplateTo▲125

   Document generation API

   2022

10. 10PJ
    Pdf.js Express – PDF annotation, e-signatures, and form filling▲334

    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

11. 11
    Kirby 3.0▲348

    The file-based content management sytem

    2019

12. 12
    Hybiscus▲255

    Developer friendly JSON API for creating PDF reports.

    2021

13. 13
    Screenshot Bin▲246

    Generate website screenshots and thumbnails at scale

    2018

14. 14
    Developerhub.io▲149

    Create beautiful powerful documentation, hassle-free.

    2018

15. 15
    PandaDoc for Developers▲237

    A seamless way to generate documents and collect eSignatures

    2021

16. 16PB
    Pdf-Bot, an API/CLI for Generating PDFs Using Headless Chrome▲235

    2017 · github.com

17. 17AA
    An API for filling out PDF forms▲209

    2017 · formapi.io

18. 18
    WebPDF▲103

    Simple PDF API & web toolkit

    2024

19. 19SS
    ScreenCraft – Screenshot and PDF API Without the Puppeteer Headaches▲5

    Hey HN, I built a REST API for capturing screenshots and generating PDFs from URLs. Why: I got tired of managing Puppeteer/Playwright in production. Memory leaks, zombie processes, Docker issues. So I wrapped it in an API. Stack: - Node.js + Fastify - Playwright (more stable than Puppeteer in my experience) - Self-hosted on Hetzner Features: - Screenshots: PNG, JPEG, WebP - PDFs: A4, Letter, custom sizes - Full-page capture, custom viewports - Cookie consent auto-accept - Lazy-load handling API example: curl -X POST…

    Dec 2025 · screencraftapi.com

20. 20
    Paperplane▲166

    Web page to PDF conversion API using Chrome

    2018

21. 21RT
    Ready-to-use API to convert any web page to PDF using headless Chrome▲129

    2017 · apify.com

22. 22
    FormAPI▲230

    Stripe for PDFs

    2017

23. 23
    Cassiopeia▲130

    Micro SaaS for easy and powerful PDF generation via API

    2024

24. 24
    display.dev▲183

    Publish agent-generated HTML behind company auth

    May 2026

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