Anvil PDF Generation API

Anvil

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Score6.9

Rank#5 of 45

From$99/mo

Free planYes

Runs onAPI, Web

Summary

Anvil PDF Generation API creates PDFs on demand from HTML and CSS or Markdown. Developers can set page dimensions and margins, use custom TTF fonts, add headers, footers and page numbers, and create fillable forms or variable-length documents. Markdown conversion has a default theme, with the option to supply CSS. Anvil lists SDKs for C#/.NET, JavaScript, Python and TypeScript; Go, Java, PHP and Ruby are marked coming soon. A Zapier integration can automate paperwork workflows, including filling a PDF or starting or pre-filling a Workflow. The cloud API lists SOC 2 and HIPAA compliance, with email support. Free mode is UI-only, and API key access requires a credit card or upgrade. Test mode is free and unlimited on every plan, but test documents are watermarked and use demo signatures. API PDF fill or generation costs $0.10 per use; enabling metered usage with a valid card provides 2,500 starter credits. Custom fonts must be TTF; OTF and WOFF are unsupported.

Who it is for

The API is presented for developers and agents who need to generate or fill PDFs from HTML, CSS or Markdown. Technical teams handling high PDF volumes may also consider the listed AI Pack.

What is good

Converts HTML, CSS and Markdown to PDF
Supports fillable forms and variable-length documents
SDKs listed for four languages
Free unlimited test mode on every plan
Zapier integration supports paperwork workflows

What to know first

Free plan is UI-only; API key access requires a card or upgrade
API fill or generation costs $0.10 per use
Custom fonts must be TTF
Test documents are watermarked and use demo signatures

Verdict

Anvil combines PDF generation and form capabilities with programmatic access and workflow integration. Review its metered API pricing, access requirements and TTF-only custom font support before choosing it.

Anvil PDF Generation API plans and pricing

All plans

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 useanvil.com · 29 Sept 2026

AI Pack $99/mo $99/mo 5 users · programmatic Document AI · 50 pages per AI-tagged PDF · higher rate limit (40/s) useanvil.com · 29 Sept 2026

Product Pack $425/mo $425/mo 5 users · includes AI Pack features · white labeling · advanced signing features useanvil.com · 29 Sept 2026

Enterprise Not published Custom Unlimited users · SSO · HIPAA, DPA · priority support · customer success useanvil.com · 29 Sept 2026

PDF fill / generation over API $0.10 once $0.10 per PDF Fill/Generation Metered integrated/API usage · 2,500 starter credits · bulk quantities start at 25,000+ useanvil.com · 29 Sept 2026

Compared on PDF creation software

Free plan: Yesuseanvil.com
Data merge: Yesuseanvil.com
API access: Yesuseanvil.com

Facts

Compliance: SOC 2, HIPAAuseanvil.com · 24 Sept 2026
Deployment: clouduseanvil.com · 24 Sept 2026
Support: emailuseanvil.com · 24 Sept 2026
Integrations: Zapieruseanvil.com · 24 Sept 2026
What it does: The API generates PDFs on demand by converting HTML and CSS or Markdown to PDF.useanvil.com · 29 Sept 2026
HTML and CSS: HTML-to-PDF supports full CSS, custom fonts in TTF format, page headers and footers, and fillable forms.useanvil.com · 29 Sept 2026
Markdown: Markdown-to-PDF uses a default theme, and callers can provide their own CSS.useanvil.com · 29 Sept 2026
SDKs: Anvil lists PDF Generation SDKs for C#/.NET, JavaScript, Python, and TypeScript; Go, Java, PHP, and Ruby are marked coming soon.useanvil.com · 29 Sept 2026
Integration: The product page describes a Zapier integration for automating paperwork workflows, including filling a PDF and starting or pre-filling a Workflow.useanvil.com · 29 Sept 2026
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.useanvil.com · 29 Sept 2026
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.useanvil.com · 29 Sept 2026
Font limitation: Custom fonts must be TTF; OTF and WOFF are not supported at this time.useanvil.com · 29 Sept 2026
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.useanvil.com · 29 Sept 2026
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.useanvil.com · 29 Sept 2026
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.useanvil.com · 29 Sept 2026