Dev tools · alternatives · 2026

24 alternatives to PDF Ace

The simplest API for PDF Conversions

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. PDF Ace launched in 2018; newer entries below may have overtaken it.

1. 1
   PDF.ai Free tools▲230

   Free PDF tools, merge, split, compress, compress, rotate etc

   2023 · its alternatives →

2. 2PA
   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 →

3. 3PB
   Pdf-Bot, an API/CLI for Generating PDFs Using Headless Chrome▲235

   2017 · github.com · its alternatives →

4. 4
   Anvil PDF API▲185

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

   2021 · its alternatives →

5. 5
   Anvil PDF Filling API▲205

   The easiest way to programmatically populate any PDF

   2020 · its alternatives →

6. 6AA
   An API for filling out PDF forms▲209

   2017 · formapi.io · its alternatives →

7. 7
   EasyPDFAPI▲8

   Convert HTML documents to PDF with Easy PDF API

   2024 · its alternatives →

8. 8SP
   Simple Print – Convert web articles into printable PDFs▲122

   2018 · pdf.fivefilters.org · its alternatives →

9. 9RT
   Ready-to-use API to convert any web page to PDF using headless Chrome▲129

   2017 · apify.com · its alternatives →

10. 10
    PDF Generator API▲15

    Creating PDF files made easy

    2024 · its alternatives →

11. 11AA
    an API to extract text from a PDF▲51

    2013 · stamplin.com · its alternatives →

12. 12
    PDF merge API▲98

    Create PDF documents from data and templates

    2024 · its alternatives →

13. 13
    Info Ace Tech PDF Tool▲6

    PDF to image, image to PDF. Merge and Split PDF

    2025 · infoacetech.net · its alternatives →

14. 14DC
    Docverter: Convert your text content to PDF/HTML/EPUB with one REST API▲58

    2012 · docverter.com · its alternatives →

15. 15
    Bitwar Online PDF Converter▲68

    Convert PDF to Word, Excel and many other formats

    2021 · its alternatives →

16. 16
    PDFBolt▲16

    HTML to PDF API ✨

    2025 · pdfbolt.com · its alternatives →

17. 17
    Ai to pdf▲11

    Free Ai to pdf online platform

    2024 · its alternatives →

18. 18
    pdfconvertor▲13

    All in one tool for merging, converting and organizinf pdf's

    2025 · its alternatives →

19. 19
    AceThinker PDF Converter Pro▲4

    Convert PDF Documents with Ease

    2021 · its alternatives →

20. 20AA
    Api2Pdf, an API for Converting HTML, URLs, and Office Docs to PDF▲9

    2018 · api2pdf.com · its alternatives →

21. 21
    PDFtip - Your all-in-one PDF toolkit▲12

    Free online pdf tools | convert, merge, split pdfs

    2024 · pdftip.com · its alternatives →

22. 22
    A free online PDF AI conversion tool▲6

    A free online PDF AI conversion tool

    Oct 2025 · pdf.chdaoai.com · its alternatives →

23. 23
    Fast PDF API▲10

    PDF API. Generate & Transform PDFs. Multi-language SDKs.

    2023 · its alternatives →

24. 24
    HelloPDF v2▲12

    An incredible and simple pdf converter built for everyone

    2019 · 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 →