Can it fill PDFs that don't have fillable fields?

Yes, the skill includes a Flat PDF mode that scans geometric primitives like lines and boxes to place text precisely using FreeText annotations with appearance streams.

Does it support complex tax forms like the IRS 1040?

Absolutely. It uses radial identity matching and scanline accumulation to handle the dense field layouts and specific formatting requirements of IRS documents.

Does it use AI vision for analysis?

Yes, it can trigger Gemini vision analysis to create a semantic template of the form, identifying field types, formats, and calculation dependencies.

Can I troubleshoot incorrect field mappings?

Yes, the skill includes specific diagnostic scripts to debug field mapping, dump spatial context, and run automated fill accuracy evaluations.

How does the skill ensure field mapping accuracy?

It employs a three-layer enrichment pipeline: heuristic directional search, radial identity ray-casting, and scanline context to ensure labels match fields even on dense forms.

PDF Form Filler

Name: PDF Form Filler
Author: cdeistopened

bycdeistopened

•

Productividad y Flujo de Trabajo

Fills and analyzes both standard AcroForm and flat non-fillable PDF documents with high-precision field mapping and validation.

The PDF Form Filler skill empowers Claude to handle complex document workflows by accurately identifying and populating fields in any PDF, regardless of whether it contains native form data. It employs advanced spatial heuristics, radial identity matching, and Gemini-powered vision analysis to map labels to fields, even on dense tax forms like the IRS 1040. For non-fillable documents, it uses a sophisticated geometric scanning pipeline to detect underlines and boxes, placing annotations with pixel-perfect precision to ensure professional-grade output for tax forms, legal contracts, and medical applications.

Características Principales

01Multi-layer validation engine for data types, formats (SSN, EIN, currency), and required fields.

02Gemini-powered vision analysis for semantic understanding of field purposes and calculation logic.

038 GitHub stars

04Advanced spatial mapping using radial identity and scanline context to resolve dense field layouts.

05Geometric content stream scanning to detect checkboxes, digit boxes, and floor/ceiling alignment.

06Dual-mode support for native AcroForms and flat, non-fillable PDF documents via annotation overlays.

Casos de Uso

01Populating legal contracts and insurance forms with high-accuracy field mapping.

02Converting flat, scanned application forms into professionally filled digital documents.

03Automating complex tax preparation and government filings like IRS 1040, W-2, and W-9.

Características Principales

01Multi-layer validation engine for data types, formats (SSN, EIN, currency), and required fields.

02Gemini-powered vision analysis for semantic understanding of field purposes and calculation logic.

038 GitHub stars

04Advanced spatial mapping using radial identity and scanline context to resolve dense field layouts.

05Geometric content stream scanning to detect checkboxes, digit boxes, and floor/ceiling alignment.

06Dual-mode support for native AcroForms and flat, non-fillable PDF documents via annotation overlays.

Casos de Uso

01Populating legal contracts and insurance forms with high-accuracy field mapping.

02Converting flat, scanned application forms into professionally filled digital documents.

03Automating complex tax preparation and government filings like IRS 1040, W-2, and W-9.