Dev tools · alternatives · 2026

24 alternatives to Cellystial

Fast PDF document generation SaaS platform.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Cassiopeia▲130

   Micro SaaS for easy and powerful PDF generation via API

   2024 · cassiopeia-api.cloud · its alternatives →

2. 2
   ReadyBase▲434

   Launching ReadyBase today. If you like trying new AI tools, you'll love trying ReadyBase. We engineered a way for LLM's to output PDF/PNG without the use of templates. Every generation is 100% unique. Link: https://readybase.ai/ Launch: https://www.producthunt.com/products/readybase

   2025 · readybase.ai · its alternatives →

3. 3
   Document Generator by Qwilr ▲337

   Beautiful business documents, all in one click ✨

   2019 · qwilr.com · its alternatives →

4. 4PA
   PDF API – Generate, convert, and modify PDF documents▲204

   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 · its alternatives →

5. 5
   PDF Hippo: Dynamic PDF API for Devs▲222

   Convert Excel templates into dynamic PDFs

   2023 · pdfhippo.com · its alternatives →

6. 6
   TemplateTo▲125

   Document generation API

   2022 · templateto.com · its alternatives →

7. 7
   PDF merge API▲98

   Create PDF documents from data and templates

   2024 · its alternatives →

8. 8
   Paperplane▲166

   Web page to PDF conversion API using Chrome

   2018 · converterer.com · its alternatives →

9. 9
   API Template▲118

   Generate images and PDFs with simple API

   2021 · apitemplate.io · its alternatives →

10. 10
    CraftMyPDF▲135

    Design and generate pixel-perfect PDF documents in minutes

    2022 · craftmypdf.com · its alternatives →

11. 11
    PDFMonkey▲164

    Automate your PDF generation, get the job done

    2023 · its alternatives →

12. 12
    Webpage to PDF Microservice▲93

    Automate PDF Report Generation

    2018 · imti.co · its alternatives →

13. 13
    Docamatic▲81

    Generate documents from your app the easy way.

    2020 · docamatic.com · its alternatives →

14. 14
    Avenir▲68

    Generate docs from SF with minimal effort, in seconds

    2023 · aveneer.forvendi.com · its alternatives →

15. 15
    Rapid Doc▲68

    All in one PDF tools and scanner app

    2020 · play.google.com · its alternatives →

16. 16
    Document Studio▲11

    Effortless document generation with Google Sheets or Forms

    2017 · chromewebstore.google.com · its alternatives →

17. 17
    CxReports▲18

    Effortlessly transform complex data into pixel-perfect reports using our user-friendly interface and intuitive WYSIWYG editor. Try CxReports for free!

    2025 · cx-reports.com · its alternatives →

18. 18
    Pdfbix▲59

    Scalable REST API to generate PDF

    2021 · its alternatives →

19. 19TA
    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 · its alternatives →

20. 20QG
    Quickly generate an invoice PDF for a single product/service▲11

    Lazily generate PDF invoices—powered by Cloudflare Workers®.

    2019 · lazy.invoice.workers.dev · its alternatives →

21. 21
    PDF Generator API▲12

    A flexible Web API and template editor for PDF generation

    2020 · pdfgeneratorapi.com · its alternatives →

22. 22
    Document Generator▲7

    Doc generator for ai tools to develop applications

    2025 · workspace.google.com · its alternatives →

23. 23
    Zyncro Invoice Generator▲11

    Generate Professional Invoices for Free

    Feb 2026 · zyncro.in · its alternatives →

24. 24
    Docstron▲7

    The PDF Generation API for Developers

    Nov 2025 · docstron.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →