DocSpring
DocRaptor
Doczilla
wkhtmltopdf
PDF Generator API
DocuSign
MailMergic
HTML PDF API
PDFMakerAPI
APITemplate.io
CraftMyPDF
PDF Generator API
We provide a PDF filling and generation API:
PDF generation doesn't need to be complicated or take weeks of engineering time. Use our battle-tested service to start filling out PDFs in minutes.
PDFMakerAPI is a PDF template builder and PDF generation API. Instead of hard-coding documents or wrestling with HTML-to-PDF converters that break when your content changes, you design a reusable template once in a visual, no-code editor — placing text, tables, images, and dynamic fields exactly where you want them — then feed it data to produce a finished, editable PDF.
Generate a single document or thousands. Fill a template in yourself, share a link so anyone completes it in the browser as a fillable PDF form, send JSON to the REST API, trigger generation from no-code tools like Zapier, Make, and n8n, or create documents straight from AI agents like Claude and ChatGPT. Prefer to start from a prompt? Describe what you need and let Quill build it.
Teams use PDFMakerAPI for invoices, receipts, certificates, reports, and contracts — anything you'd otherwise rebuild by hand every time the data changes. Start building free with 100 PDFs a month.
DocSpring PDFMakerAPINo features have been listed yet.
DocSpring's answer
Ruby on Rails, React, AWS
DocSpring's answer
DocSpring is built specifically for developers who need reliable, secure PDF generation in production. We combine PDF form filling and HTML-to-PDF in a single API, with a visual template editor, typed fields, and validation to catch issues early. Our product has a lot of power features and is built to handle very advanced forms. Our infrastructure is SOC 2 Type II compliant, battle-tested, privacy focused, and optimized for high-volume workloads, so you can ship PDF features quickly and then stop thinking about them.
DocSpring's answer
DocSpring is designed for teams who need a powerful tool with all the features you need for complex forms and business logic. DocSpring supports structured JSON, typed fields, and array iterations, and many other advanced features, so your templates stay aligned with your real data model. You get powerful validation, a visual editor, strong observability, and an API that fits into modern engineering workflows, so you spend less time fighting PDFs and more time shipping product.
DocSpring's answer
DocSpring is built for engineering and product teams who manage complex documents in production: things like financial applications, insurance forms, healthcare and legal documents, HR and payroll workflows, and government-style forms.
DocSpring's answer
I used to work at a payroll company (Gusto). We had built a similar in-house tool for filling out tax forms. I then built the first version of DocSpring (formerly named FormAPI) while I was living in Thailand. I built it to automate the filling out of visa application and visa extension forms, but realized that it could also be used for tax forms, real estate contracts, and any other kind of fillable PDF form.
DocSpring's answer
Based on our record, DocSpring seems to be more popular. It has been mentiond 5 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I'm still working on DocSpring [1], originally launched on Hacker News in October 2017 under the name "FormAPI." It's a PDF generation API with a template editor UI for setting up fields on PDF forms. It makes it easy to turn complex tax and immigration forms into simple type-safe APIs with strong validations. I've been having a lot of fun with AI agents lately. Have tried a lot of them - Cline, Roo Code,... - Source: Hacker News / over 1 year ago
For programmatic filling of PDFs, have a look at DocSpring: https://docspring.com. - Source: Hacker News / over 2 years ago
Great post. I've spend a lot of time reading through the PDF specification over the last ~5 years while building DocSpring [1], and I still feel like I've barely scratched the surface. Qpdf is a great tool. One of my other favorites is RUPS [2], which really lets you dig into the structure of a PDF. [1] https://docspring.com [2] https://github.com/itext/i7j-rups. - Source: Hacker News / about 3 years ago
Hi /u/pepeday, I’m the founder of a software product that I built to solve this problem. The service is called DocSpring: https://docspring.com We provide a platform that you can use to set up PDF templates, and automatically generate PDFs by filling in those templates with data from your database. Please feel free to send me a message and I’d be happy to speak with you and help you figure out a solution. I can... Source: almost 5 years ago
- https://docspring.com/ (super advanced features, a bit bloated). Source: about 5 years ago
DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more
APITemplate.io - APITemplate.io allows you to auto-generate social images and PDF documents with a simple API or automation tools like Zapier & Airtable. No CSS/HTML required.
Doczilla - Effortlessly create stunning PDFs and screenshots. Seamlessly store them in your own AWS or Google Cloud Storage bucket, putting the control and creativity right at your fingertips.
CraftMyPDF - PDF generation API for developers who ship fast.
wkhtmltopdf - wkhtmltopdf is an open source (LGPL) command line tools to render HTML into PDF and various image...
PDF Generator API - Generate PDF documents from templates and JSON data. Enable your users to create PDFs and manage document templates using a browser-based drag-and-drop editor!