Dev tools · alternatives · 2026
24 alternatives to Creating Fillable PDF Document Forms with HTML
Learn how to streamline the document signing process using the DocuSeal HTML API. This guide walks you through creating custom HTML documents, defining fields, and automating the signature process using simple API requests.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Creating Fillable PDF Document Forms with HTML launched in 2023; newer entries below may have overtaken it.
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PDFShift▲386Convert any HTML to PDF with a single POST request.
2018 · pdfshift.io · its alternatives →
- 2
The easiest way to programmatically populate any PDF
2020 · useanvil.com · its alternatives →
- 3
Anvil PDF API▲185Twilio for PDFs: esign, fill, generate PDFs with one API
2021 · useanvil.com · its alternatives →
- 4PJ
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 · its alternatives →
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Every API you need to automate document workflows
2024 · developers.altaflow.com · its alternatives →
- 6
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 →
- 7
DocSpring▲12POST JSON; GET PDF - Fill, generate, and sign PDFs via API
2025 · docspring.com · its alternatives →
- 8PA
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 →
- 9PO
Fill in PDF templates with the PDF Otter API. Use it to accept eSignatures in your app, repeatedly fill in common PDF forms, or build large scale apps around PDF documents.
2017 · pdfotter.com · its alternatives →
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Docuest▲18Convert HTML to PDF quickly and cost-effectively with API
2025 · docuest.com · its alternatives →
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Cloud based platform for electronic signatures
2021 · documentesign.com · its alternatives →
- 17
Turn HTML & web pages into PDFs with one API call
Aug 2026 · rapidapi.com · its alternatives →
- 18
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 →
- 19
Create free electronic signature for signing document online
2021 · hellobonsai.com · its alternatives →
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Add text, watermarks, and fill forms in pdfs with ease | API
2025 · prefillpdf.com · its alternatives →
- 23
eformly▲2Turn PDFs, Word docs & images into fillable online forms
Jun 2026 · eformly.app · its alternatives →
- 24AA
Simplest and cheapest REST API to generate PDF from HTML, Office Docs, and merge PDFs
2018 · api2pdf.com · 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 →