A document generation API for teams turning data into branded reports and other files.
Dynamic Document API turns data into branded reports and other documents through a REST API. You can design templates visually or control them with HTML and CSS.
Updated Oct 30, 2026
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Renders are queued and processed asynchronously. Median render time is 216 ms and p95 is 516 ms 1 , so the limiting factor at volume is your own pipeline, not the engine.
In the European Union. Payloads and generated files are processed and stored there, which matters for GDPR-regulated workloads. Generated files are delivered through expiring signed URLs, and payload retention is configurable.
Renders are queued and processed asynchronously. Median render time is 216 ms and p95 is 516 ms 1 , so the limiting factor at volume is your own pipeline, not the engine.
Test keys render for free, return a watermarked file and keep it for one day. Development and CI never touch your quota or your customers' documents — and a key leaked from a test branch cannot produce a real invoice.
Send an idempotency key and a repeated request returns the original result instead of a second document. Keys are honoured for 24 hours, which covers the retry window of every reasonable job queue.
Every published version of a template is kept. Pin a version for documents that must not change — a signed contract layout, an audited report — and roll back a design change without a deployment.
Separate accounts for the people who need them, with administrative actions recorded. Keys are stored as hashes and can be rotated; a key cannot be displayed again after it is created.
"delivery": "binary" returns the file in the response, when you would rather not touch a URL at all.
Output uploaded to your Amazon S3 or S3-compatible bucket, Azure Blob Storage, Google Cloud Storage or SFTP server, with retries and an upload status per file.
Each render emailed through your own email provider account, from your domain, with the file attached or linked, and a status and delivery events per email.
Turn data into pixel-perfect PDFs and images — automatically.
In the European Union. Payloads and generated files are processed and stored there, which matters for GDPR-regulated workloads. Generated files are delivered through expiring signed URLs, and payload retention is configurable.
Send an idempotency key and a repeated request returns the original result instead of a second document. Keys are honoured for 24 hours, which covers the retry window of every reasonable job queue.
Every published version of a template is kept. Pin a version for documents that must not change — a signed contract layout, an audited report — and roll back a design change without a deployment.
Storage destinations upload the output to your own Amazon S3 or S3-compatible bucket, Azure Blob Storage, Google Cloud Storage or SFTP server.
Payloads and generated files are processed and stored in the European Union. A Data Processing Agreement applies to every paid plan, the sub-processors are published, and changes are announced in advance.
With keep_hosted_copy set to false we delete our copy once the upload has succeeded, and with zero retention we keep the file only until it has reached your storage, never longer than about a day.
Free
Design once. Send JSON. Generate branded invoices, reports, certificates, social visuals and more through one production-ready REST API.
Yes. The same API and the same template system produce PNG, JPG and WebP output. This is typically used for social visuals, ad banners, personalised campaign graphics and Open Graph preview images.
Build visually or with full HTML and CSS control. Variables, conditionals, loops and filters keep every render consistent. More on the PDF template API .
Build visually or with full HTML and CSS control. Variables, conditionals, loops and filters keep every render consistent. More on the PDF template API .
Batches are available on every paid plan. You send many records as JSON or CSV in one run and get one file per record, or a single merged PDF. It is the difference between 5,000 API calls and one job.
Invoices, contracts, reports and certificates rendered from HTML, a URL or a reusable template — with headers, footers and automatic page numbering. See the PDF generation API .
Social posts, ad banners and personalised visuals as PNG, JPG or WebP — generated at scale from the same data your product already holds. See the image generation API .
Receive a secure signed file URL, or a webhook callback, within seconds.
A typical single-page document or image renders in under two seconds. Large or batched jobs can be submitted asynchronously, in which case the API returns immediately and notifies your endpoint through a webhook when the file is ready.
Webhooks follow the Standard Webhooks specification and are signed with HMAC-SHA256.
Yes. The free plan is for testing and prototypes, with 50 renders a month, 2 templates and 1 member.
It turns data into branded documents through a REST API. It can render reports, invoices, contracts and certificates from HTML, a URL or a reusable template.
Yes. You can build templates in the visual editor, and Zapier, Make or N8n can make the HTTP call for each render.
Yes. Large or batched jobs can run asynchronously. The API returns immediately, then sends a webhook when the file is ready.
Yes, on every paid plan. It can upload output to Amazon S3, Azure Blob Storage or Google Cloud Storage, among other listed storage destinations.
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