| Price from | $16/mo | €19/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| API | Yes | Yes |
| Plans published | 5 | 5 |
| Spec score · HTML to PDF APIs | 8.0 (#16) | 8.1 (#11) |
| Intended users | Doppio describes itself as a replacement for self-hosted Puppeteer, wkhtmltopdf, and fragile PDF libraries for teams automating document generation. | The homepage presents Formfeed for developers generating consistent documents from backends, no-code automations or AI agents. |
| Product | Doppio is a managed API that converts HTML, URLs, and saved templates into PDFs and PNG screenshots using Chromium. | Formfeed turns JSON into PDFs and images using templates, and also supports tagged Word and PowerPoint files. |
| Security | Doppio states that it is GDPR compliant, EU hosted, HDS certified, and renders each document in a sandboxed Chromium instance destroyed after processing. | The maker says API keys are stored as hashes, download links are signed and expire, and data is encrypted in transit with TLS 1.2+ and at rest. |
| Support | The features page says live chat with the engineering team has an average response time under two hours. | The pricing page lists Community support for Free, Email for Starter, Email with a 1-business-day response for Pro, and Priority with a 4-hour response for Business. |
| Templates | Doppio provides a built-in HTML/CSS editor with live preview, data injection, version management, and PDF or PNG generation by template ID. | HTML templates can use Jinja2, Liquid or Handlebars, and image templates can be designed on a canvas. |