Doppio
HTML to PDF/Image API
SubscriptionAPI11,872 impressions#3 of its week
Doppio is a managed API that converts HTML to PDFs or PNG screenshots with optional direct S3 upload.
- for
- Developers needing server-less document generation and screenshot rendering.
- pricing
- freemium
Key features
- Modern Chromium rendering — Renders HTML with full CSS3, Flexbox, Grid, webfonts, JavaScript and chart libraries.
- Direct S3 upload — Uploads generated PDFs or screenshots straight to a presigned S3-compatible bucket.
- Async renders & webhooks — Supports background rendering with webhook callbacks when documents are ready.
- Template engine — Create reusable HTML templates with dynamic data injection via the API.
- Full language support — SDKs and examples for Ruby, Python, PHP, Node.js, Next.js, Nuxt and any HTTP client.
- Privacy-first infrastructure — EU-hosted, GDPR-compliant isolated Chromium instances that never store document content.
Use cases
- Generate branded invoices or receipts automatically from billing data
- Export analytics dashboards and charts as pixel-perfect PDFs for reporting
- Create personalized certificates or diplomas at scale using HTML templates
- Produce order confirmations and shipping labels as PDFs directly from e-commerce platforms
- Capture full-page website screenshots for visual regression testing or archiving
Doppio pricing
- BasicFreeUp to 400 docs/month · 1 template · Sync renders · Community support
- Premium$16/monthUp to 4,000 docs/month · 5 templates · Async renders · Presigned URL upload
- Premium+$48/monthUp to 12,000 docs/month · 10 templates · High rate limit · Priority email support
- Pro$129/monthUp to 36,000 docs/month · 40 templates · Higher rate limit · Live chat support
Doppio vs alternatives
 Doppio |  WebPDF | |
|---|---|---|
| Best for | Managed HTML-to-PDF/Screenshot API | Basic PDF generation API |
| Pricing | Freemium | Subscription |
| DevHunt upvotes | 17 | 17 |
| Launched | Jan 2024 | Feb 2024 |
- Doppio vs WebPDF: WebPDF offers a simple PDF API but lacks built-in screenshot, async webhook, and direct S3 upload features that Doppio provides.
Doppio FAQ
Do you offer a free plan?+
Yes. The Basic plan is free with up to 400 documents per month and no credit card required.
Can I upload the result to my own storage?+
Yes. You can provide a presigned URL for any S3-compatible storage and Doppio will upload the file directly.
Is there a timeout for renders?+
The default timeout is 30 seconds per render; for larger documents you can use async mode with extended timeouts.
How is data privacy handled?+
Each render runs in an isolated Chromium instance that is terminated after processing; no document data is persisted and the service is GDPR-compliant and EU-hosted.
Can I use non-Amazon S3 storage?+
Yes. Any S3-compatible storage (e.g., Google Cloud Storage, DigitalOcean Spaces, MinIO) works via presigned URLs.
Summarized by DevHunt from doppio.sh · Oct 6, 2026. Details may change; check the official site.
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