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Anvil PDF Generation API

By Anvil · useanvil.com

From $99/mo Free plan WebAPI
Visit useanvil.com
Spec score 8.7 #2 of 41 in HTML to PDF APIs

What it is

Anvil PDF Generation API creates PDFs on demand from HTML and CSS or Markdown. For HTML, it supports full CSS, custom TTF fonts, page dimensions and margins, headers and footers, page numbers, and fillable forms. Markdown conversion applies a default theme, and callers can provide CSS of their own. The API can also generate variable-length documents and merge data into PDFs. Anvil lists SDKs for C#/.NET, JavaScript, Python, and TypeScript; Go, Java, PHP, and Ruby are marked as coming soon. A Zapier integration can automate paperwork workflows, including filling a PDF or starting or pre-filling a Workflow. It is a cloud service with API and web access, email support, and listed SOC 2 and HIPAA compliance. Test mode is free and unlimited on every plan, though test documents are watermarked and use demo signatures. API PDF fill or generation costs $0.10 per use; enabling metered usage with a valid credit card provides 2,500 starter credits. The Free plan is free and UI-only; API key access requires a credit card or upgrade. Custom fonts must be TTF; OTF and WOFF are not supported.

Spec sheet

What it does
The API generates PDFs on demand by converting HTML and CSS or Markdown to PDF.Read 29 Sep 2026 · useanvil.com
Intended users
The product is presented as an API for developers and agents, and the pricing page describes the AI Pack for technical teams working with high PDF volumes.Read 29 Sep 2026 · useanvil.com
Deployment
cloudRead 24 Sep 2026 · useanvil.com
Integrations
ZapierRead 24 Sep 2026 · useanvil.com
Security
Anvil says it encrypts signed documents with a 2048 RSA private key stored in a secure Hardware Security Module, which its developers cannot access.Read 29 Sep 2026 · useanvil.com
Compliance
Anvil states it is SOC 2 Type II, GDPR/DPA, and HIPAA compliant and maintains Business Associate Agreements.Read 29 Sep 2026 · useanvil.com
Support
Standard support is available by email at [email protected], while the pricing page lists priority support for Enterprise.Read 29 Sep 2026 · useanvil.com
Company
Anvil Foundry, Inc. lists its principal place of business in San Francisco, California; Anvil's AI information page says it launched in July 2018.Read 29 Sep 2026 · useanvil.com
Font limitation
Custom fonts must be TTF; OTF and WOFF are not supported at this time.Read 29 Sep 2026 · useanvil.com
Free testing
Test mode is free and unlimited on every plan; test requests do not count against quotas or incur charges, and test documents are watermarked and use demo signatures.Read 29 Sep 2026 · useanvil.com
HTML and CSS
HTML-to-PDF supports full CSS, custom fonts in TTF format, page headers and footers, and fillable forms.Read 29 Sep 2026 · useanvil.com
Integration
The product page describes a Zapier integration for automating paperwork workflows, including filling a PDF and starting or pre-filling a Workflow.Read 29 Sep 2026 · useanvil.com
Key features
Generate PDFs from HTML and CSS · Generate PDFs from Markdown, including tables and images · Set PDF page dimensions and margins · Add page headers, footers, and page numbers · Use custom TTF fonts · Generate dynamic, variable-length documents · Create PDFs with fillable form fields · Fill reusable PDF templates with supplied dataRead 24 Sep 2026 · useanvil.com
Markdown
Markdown-to-PDF uses a default theme, and callers can provide their own CSS.Read 29 Sep 2026 · useanvil.com
SDKs
Anvil lists PDF Generation SDKs for C#/.NET, JavaScript, Python, and TypeScript; Go, Java, PHP, and Ruby are marked coming soon.Read 29 Sep 2026 · useanvil.com
Support
emailRead 24 Sep 2026 · useanvil.com
Usage pricing
PDF fill or generation over API is priced at $0.10 per use, with 2,500 starter credits after enabling metered usage with a valid credit card.Read 29 Sep 2026 · useanvil.com

Plans and prices

Free Free 2 users · UI only; add a credit card or upgrade for API key access · 2,500 PDF fill/generation starter credits after enabling metered usage Read 29 Sep 2026 · useanvil.com
AI Pack $99 a month $99/mo 5 users · programmatic Document AI · 50 pages per AI-tagged PDF · higher rate limit (40/s) Read 29 Sep 2026 · useanvil.com
Product Pack $425 a month $425/mo 5 users · includes AI Pack features · white labeling · advanced signing features Read 29 Sep 2026 · useanvil.com
Enterprise Priced on request Custom Unlimited users · SSO · HIPAA, DPA · priority support · customer success Custom Read 29 Sep 2026 · useanvil.com
PDF fill / generation over API $0.10, paid once $0.10 per PDF Fill/Generation Metered integrated/API usage · 2,500 starter credits · bulk quantities start at 25,000+ Pay-as-you-go; paid API use requires a valid credit card Read 29 Sep 2026 · useanvil.com

Every Anvil PDF Generation API plan and price →

Strong points and limits

Strong points

  • Supports HTML/CSS and Markdown PDF generation
  • Includes fillable forms and data merge
  • Offers free, unlimited test mode
  • Zapier integration automates paperwork workflows

Limits

  • Free plan is UI-only
  • API use requires a valid credit card
  • Custom fonts must be TTF
  • Test documents are watermarked

Who it suits

It suits developers and agents that need to generate or fill PDFs from HTML, CSS, Markdown, or data. Technical teams handling high PDF volumes may consider the AI Pack, listed at $99 a month.

Verdict

Anvil provides multiple PDF inputs, formatting controls, and fillable forms through an API. Check the UI-only Free plan and per-use API pricing, and confirm TTF font support meets your needs.

Where Specifiction places it

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