Fork PDF

Fork PDF is an HTML-to-PDF API that gives you programmatic access to the rendered document layout mid-flight. By exposing the physical DOM server-side, it lets you extract element coordinates, validate document structure, and resolve layout issues in a single API call. Key Features: * Exact Coordinate Extraction: Query rendered elements directly to return physical bounding boxes (page number, x, y, width, and height) in your API response or webhook payload, streamlining e-signature placement and custom data retrieval. * Autonomous Self-Healing: Run server-side spatial assertions to detect layout collisions or orphaned content across page breaks, automatically applying style patches and re-rendering before final delivery. * Dynamic Table of Contents: Measure the exact physical page numbers headings land on during rendering, patch the verified numbers into your template, and re-render in a single roundtrip. * Offline Spatial Inspection: Download spatial document maps to query element geometry and inspect layout boundaries locally using the forkpdf Node.js library. * Production Reliability: Zero-Data Retention with Bring-Your-Own-S3 (BYO-S3), Dead Letter Queues with retry functions for failed webhook payloads, and native fillable AcroForm generation. Get started with 100 free credits. No credit card required.