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Dev tools · alternatives · 2026

24 alternatives to PDF Filler

Automatically filling out fields in PDF files

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. PDF Filler launched in 2019; newer entries below may have overtaken it.

  1. 1

    Automatically fill and generate hundres of forms

    2022 · its alternatives →

  2. 2

    Fill out forms in 1-click with smart AI

    2024 · fillaform.ai · its alternatives →

  3. 3

    Fill out and generate PDFs with a simple API request. Design templates in our drag-and-drop editor, POST your JSON data, and download a finished PDF in seconds.

    2017 · formapi.io · its alternatives →

  4. 4

    Web service to automate PDF form filling

    2019 · pdfformfiller.herokuapp.com · its alternatives →

  5. 5

    Automate PDF forms filling from database.

    2019 · sonabstudios.github.io · its alternatives →

  6. 6

    All-in-one forms, scheduling, payments & workflows

    2024 · fillout.com · its alternatives →

  7. 7

    The easiest way to programmatically populate any PDF

    2020 · useanvil.com · its alternatives →

  8. 8

    Automate Form Filling in Seconds with AI

    2024 · fillgenius.com · its alternatives →

  9. 9

    it helps to auto fill pdf form fields automatically

    2019 · pdf-forms-filler.herokuapp.com · its alternatives →

  10. 10

    Library to fill out a PDF form and generate a copy filled

    2019 · github.com · its alternatives →

  11. 11
    Paperjet▲202

    Turn your PDFs into fillable forms in 2 seconds

    2015 · its alternatives →

  12. 12

    It Automate the filling out immigration PDF forms.

    2019 · vanhackton-2019-isaacisrael.herokuapp.com · its alternatives →

  13. 13

    Hi HN, I’ve built and sold startups in healthcare, edtech, and supply chain — and across all of them, the same problem kept coming up: People wasting hours pulling messy data out of PDFs, spreadsheets, websites, emails, and even videos… just to clean it up and re-enter it into CRMs, ERPs, or web forms. Most tools in this space are built for enterprise teams or a specific vertical — they assume fixed formats, API integrations, and engineering support. AutoForm isn’t that. It’s an AI data entry agent built for real-world chaos and individual users: Extracts from unstructured sources (PDFs,…

    2025 · autoform.ai · its alternatives →

  14. 14

    Turn your PDFs into powerful online forms

    2020 · jotform.com · its alternatives →

  15. 15

    Automatic pdf form filler tool | free online

    2025 · fillpdffromsheet.com · its alternatives →

  16. 16

    Automation to fill out pdf files

    2019 · github.com · its alternatives →

  17. 17

    Every API you need to automate document workflows

    2024 · developers.altaflow.com · its alternatives →

  18. 18FP
  19. 19
    FormAPI▲230

    Stripe for PDFs

    2017 · docspring.com · its alternatives →

  20. 20

    Magically complete forms with AI

    2024 · aiformfill.com · its alternatives →

  21. 21

    Free AI automations for online forms and scheduling

    2024 · fillout.com · its alternatives →

  22. 22

    Some PDF forms have no fillable fields. When opened in Adobe Reader, there are no fields to type into. This AI converter automatically adds fillable fields to the PDF, technically turning it into a form. Adding fields manually is a tedious process that nobody enjoys. This is the kind of work that should be automated. This AI PDF converter is free and capable of processing even long documents with dozens or hundreds of pages. For larger PDFs, it may take more time. It works best on PDFs created from Word documents. Please set the right expectations and be prepared to manually adjust any…

    Feb 2026 · instafill.ai · its alternatives →

  23. 23

    Automated PDF form completion from any data source

    2025 · docufill.ai · its alternatives →

  24. 24

    Enable your website visitors to fill, annotate, merge and edit PDF files without leaving your website. Use the iframe, Javascript script or React component.

    2023 · simplepdf.github.io · its alternatives →

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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 →