PDF Generation API

URL to PDF API

SnapAPI's PDF endpoint converts any public URL to a PDF document using headless Chromium, producing pixel-perfect PDFs that accurately represent the page's print CSS styling, embedded fonts, and JavaScript-rendered content. Unlike simple HTML-to-PDF converters that process static HTML strings, SnapAPI loads the target URL in a full browser context that executes JavaScript, loads all CSS stylesheets and web fonts, and waits for dynamic content to render before capturing the PDF. The resulting PDF accurately represents the page as a browser user sees it, including content rendered by JavaScript frameworks like React, Vue, and Angular that static HTML converters cannot process. Call the PDF endpoint with the target URL and receive a binary PDF document in the response, ready to store in S3, attach to an email, or stream directly to a browser download.

PDF API for Invoice and Report Generation

SaaS applications generating customer invoices, subscription receipts, and usage reports use SnapAPI's PDF endpoint to convert HTML invoice templates rendered at a server-side URL into downloadable PDF documents. Define an invoice template page in your web application that populates with the specific invoice data when the customer's invoice URL is loaded, then call the SnapAPI PDF endpoint with that URL to capture the rendered invoice as a PDF. This approach uses your existing HTML and CSS invoice design without requiring a separate PDF generation library or template system — the same HTML template that renders in the browser for preview renders as the PDF via SnapAPI. For applications generating high volumes of invoices, implement a background job queue that processes PDF generation requests asynchronously, calling SnapAPI for each invoice URL and storing the resulting PDF in S3 with the customer ID and invoice number encoded in the object key for later retrieval.

PDF API for Document Archiving

Document archiving workflows use SnapAPI's PDF endpoint to convert web-based documents, reports, and contracts to PDF for long-term storage and offline distribution. Web applications that create documents in HTML format -- meeting notes, project specifications, compliance reports, and policy documents -- use SnapAPI to export each document as a PDF at key milestones: when a document is finalized, approved, or distributed to external stakeholders who need a portable offline copy. The PDF archive preserves the document's visual appearance as it existed at the time of export, regardless of subsequent changes to the web application's styling or the document's content, creating a reliable historical record of the document state at each archival point. For legal and compliance use cases that require document retention in a standardized format, PDF export via SnapAPI produces ISO 32000-compliant PDF files that are accepted by document management systems, court systems, and regulatory filing platforms.

PDF API for Data Export and Reporting

Business intelligence and analytics applications that display data visualizations in the browser use SnapAPI's PDF endpoint to export dashboard views and charts as PDF reports for sharing with stakeholders who need offline access to the data. Dashboard export workflows that previously required users to manually print-to-PDF from the browser -- a process that produces inconsistent results depending on the user's browser and system settings -- can be replaced with a server-side PDF generation step that calls SnapAPI with the dashboard URL, producing consistent, correctly-formatted PDFs that honor the dashboard's print CSS styling. For multi-page reports that combine data visualizations, tables, and text commentary across many pages, design the report as a single long HTML page with print CSS that controls page breaks, header and footer content, and column layout, then call SnapAPI's PDF endpoint to convert the complete report HTML to a properly paginated PDF in a single API call.

PDF API Technical Reference

SnapAPI's PDF endpoint accepts the same URL parameter as the screenshot endpoint and returns a binary PDF document with the Content-Type application/pdf header. Optional parameters control PDF output dimensions: the format parameter accepts standard page sizes including A4, A3, Letter, and Legal, with A4 and Letter being the most commonly used for business documents. The landscape parameter converts the output to landscape orientation for wide data tables and dashboard exports that display better in horizontal format. The margin parameter controls the page margins in the PDF, with sensible defaults appropriate for most business document use cases. Set the waitFor parameter to a CSS selector or a duration in milliseconds to delay PDF capture until a specific element is visible or dynamic content has finished loading, ensuring that JavaScript-rendered charts and data visualizations are fully loaded before the PDF is captured. The PDF endpoint supports the same authentication mechanism as the screenshot endpoint -- the API key as a Bearer token in the Authorization header or as an access_key query parameter.

PDF API for Legal and Compliance Document Generation

Legal technology platforms and compliance teams use SnapAPI's PDF endpoint to generate PDF versions of web-based legal documents -- contracts, terms of service, privacy policies, NDAs, and service agreements -- at key points in the document lifecycle for archiving, signing, and distribution. When a user accepts a terms of service agreement, the legal platform calls SnapAPI to capture the current version of the terms page as a PDF, storing the PDF alongside the acceptance timestamp and the user ID as evidence of what was agreed to and when. This screenshot-to-PDF approach captures the exact visual presentation of the legal document as it appeared to the user at acceptance time, rather than regenerating the document from a template that may have been updated since the acceptance event, creating a legally defensible record of the specific document version the user reviewed. For compliance teams documenting the state of internal policies at regular intervals -- typically quarterly for annual compliance audits -- SnapAPI PDF captures of the current policy page create a versioned PDF archive that auditors can review to verify that compliant policies were in place during each audit period.

PDF API for E-commerce Order Documentation

E-commerce platforms generate PDF order confirmations, packing slips, and shipping labels using SnapAPI's PDF endpoint to convert HTML order page templates to PDF documents that are automatically attached to order confirmation emails and stored in the order management system. The HTML order template renders the order line items, shipping address, payment summary, and order number from the order database when the order URL is loaded, and SnapAPI converts this rendered template to a clean, printable PDF. Customers who need a PDF invoice for expense reimbursement can download the PDF directly from their account order history page, where the PDF is generated on demand by calling SnapAPI with the order URL and streaming the result to the browser download. For B2B e-commerce platforms where purchase orders require formal PDF invoice documentation for accounts payable processing, SnapAPI's PDF endpoint generates invoices that match the visual design of the web invoice template without requiring a separate PDF template and PDF generation library to maintain alongside the HTML template.

PDF API for Educational Content and Certificates

Online learning platforms use SnapAPI's PDF endpoint to generate course completion certificates, student progress reports, and printable lesson handouts from HTML templates that are designed in the web application's standard styling system. Certificate templates that display the student's name, the course title, the completion date, and the instructor's signature render as styled HTML pages that SnapAPI converts to PDF documents with the institution's branding, fonts, and layout preserved accurately. For educational platforms that provide downloadable study guides and reference materials alongside their video content, SnapAPI converts the web-based study guide pages to PDF for students who prefer offline reading, preserving the formatting, diagrams, and code examples that make the study guide useful without requiring a separate PDF authoring workflow. Learning management systems generating gradebook reports and student progress summaries use SnapAPI to convert data-populated HTML report templates to PDF for distribution to students, parents, and academic advisors who need offline access to the progress data.

Getting Started with the PDF Generation API

Integrating SnapAPI's PDF endpoint takes the same approach as the screenshot endpoint -- the only difference is specifying format=pdf in the request parameters. Sign up at snapapi.pics to receive your API key, then make a test call to the PDF endpoint with any public URL to verify the output quality. For invoice and document generation use cases, build a simple HTML template page in your web application that populates with the specific record's data when the record's URL is loaded, verify that the template looks correct in the browser, then call SnapAPI's PDF endpoint with that URL to confirm the PDF output matches the visual design. The free tier with two hundred monthly PDF generations is sufficient for low-volume testing and small production deployments; the nineteen-dollar starter plan with five thousand monthly requests handles moderate-volume invoice and document generation for growing SaaS applications.