
DocRaptor
APITemplate.io
CraftMyPDF
PDFShift
PandaDoc
Docupilot
Robolly
Automate your PDF generation.

Coassemble
Trainn.co
Build courses by API, drop them into your product with one iframe, and get told who finished. No portal, no learner accounts, priced per course view.

Which is more popular?
Based on our record, PDFMonkey seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | pdfmonkey.io | underlayerhq.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from France · 1 - 9 employees · 2019 | Startup from the United Arab Emirates · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


PDFMonkey is your automation tool perfect for generating a high volume of PDFs. HTML to PDF with our restless API or with various automation tool such as Zapier, Make or Bubble. Link it with thousands of tools to automate your workflow and simplify your PDF management.
Underlayer is headless, API-first training for SaaS products. Instead of sending your users to a separate LMS portal, you generate a course, embed it where they already work, and get every completion sent back to your own systems. How it works Create a course. Generate one from a doc or a prompt...
What each product offers, as listed by its team.


No features have been listed yet.
Walkthroughs and reviews on video.
PDFMonkey - explained
Underlayer demo
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing PDFMonkey and Underlayer.
PDFMonkey's answer
PDFMonkey is a simple PDF generation tool that can make your task easier with automated shipping labels, invoices or any other PDF hassle.
Underlayer's answer:
Underlayer is training with no portal. You build a course by API, by MCP, or in the visual builder, and add it to your product with one iframe. Then signed webhooks tell your systems who finished. Learners never create an account or leave your app, and the player uses your theme, so it looks like part of your product. We charge per course view, not per seat, and every price and overage rate is published.
PDFMonkey's answer
PDFMonkey is one of the oldest in the market but also one of the best tool giving advanced features and improved support on automation tools such as Zapier, Make and bubble.
Underlayer's answer:
Most course tools, like Coassemble, Trainn and LearningStudioAI, assume training happens on their own site: learners sign up, log in and get enrolled, and you pay per seat. Underlayer takes the opposite approach:
No learner accounts. You pass in your own user IDs and we track progress against them. Built for developers. A full REST API covers every resource, and an MCP server lets AI agents create and edit courses. Results in your own tools. Signed webhooks send completions to your CRM, your product or your data warehouse. SCORM 1.2 and 2004 export for customers who still need to load courses into an LMS. Public pricing. Plans start at $149/month for 25,000 course views, with unlimited learners and no sales call required.
Underlayer's answer:
it's pre-launching
Underlayer's answer:
SaaS product, customer success and engineering teams who want onboarding, product education or compliance training inside their own app. It also suits platforms that train other people's users, like partner networks, marketplaces and field-ops tools, where a separate LMS login gets in the way.
Underlayer's answer:
Every company putting training in front of its users hit the same wall: the LMS wanted to own the learner. That meant a separate portal, a second login and a per-seat bill for people who never opened a course. We built Underlayer as the layer underneath instead. You keep the product and the user relationship. We handle building the course, playing it and tracking progress, and we stay out of the way.
Underlayer's answer:
Next.js 16 (App Router) with React 19 and TypeScript, Tailwind CSS v4, and Supabase (Postgres with row-level security, Auth and Storage). Claude from Anthropic generates courses with AI. Stripe handles billing and Resend sends email. There is also a remote MCP server with OAuth 2.1 for AI-agent access.
Share your experience with using PDFMonkey and Underlayer. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


PDFMonkey helps you with automating the process of PDF generation. Using it, you can effortlessly manage your templates and insert dynamic data in them whenever necessary. Thus, it saves precious time for the...
We have no reviews of Underlayer yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


One of the first features I worked on when starting my career was AIM's pdf generation tool. It was time to migrate off of PDF monkey's SaaS product to our own solution. We had to figure a way of maintaining the same templates we used... - Source: dev.to / over 1 year ago
Tracking Underlayer since Sep 2026.
When comparing PDFMonkey and Underlayer, you can also consider the following products.

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
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Coassemble is an all-in-one, online training tool that connects people with the information they need – anytime, anyplace.
Compare Coassemble to PDFMonkey or Underlayer:

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.
Compare APITemplate.io to PDFMonkey or Underlayer:

Trainn is a Customer Education platform for SaaS companies of all sizes to onboard and train customers, at scale, using product training & how-to videos, feature walkthroughs, and a dedicated customer training Academy.
Compare Trainn.co to PDFMonkey or Underlayer:

PDF generation API for developers who ship fast.
Compare CraftMyPDF to PDFMonkey or Underlayer:

Convert any HTML documents to high-fidelity PDF using a single POST request
Compare PDFShift to PDFMonkey or Underlayer: