# PDF Filler — llms.txt
# https://llmstxt.org — machine-readable summary for AI assistants
# Replace fillsignpdf.com with your actual domain before deploy.

> PDF Filler is a free, in-browser PDF editor that lets anyone fill out PDF forms,
> add text, draw signatures, insert images, and rearrange pages — without uploading
> files to a server, creating an account, or installing software.

## Product

- **Name**: PDF Filler
- **URL**: https://fillsignpdf.com/
- **Type**: Web application (client-side, runs fully in the browser)
- **License**: Free to use, no account required
- **Privacy**: Files are processed entirely in the user's browser; no data is sent to any server

## Core Features

- Add free-form text to any position on any PDF page
- Draw a handwritten signature or select a calligraphic font style
- Add checkmarks, X marks, and stamps
- Insert images (PNG, JPEG) anywhere on the PDF
- Rearrange, delete, or export individual PDF pages
- Highlight or strikethrough text
- Add a text watermark
- Undo / redo support
- Dark mode
- Offline support via service worker after first load
- Download the completed PDF instantly

## Technology

- React 18 + TypeScript (Vite)
- pdf-lib (PDF generation/editing)
- pdfjs-dist (PDF rendering)
- Progressive Web App (PWA) — installable, offline-capable
- No backend required; everything runs in WebAssembly / Canvas

## SEO & Discoverability

- Sitemap: https://fillsignpdf.com/sitemap.xml
- Structured data: WebApplication, FAQPage, HowTo, Organization (JSON-LD)
- Open Graph and Twitter Card meta tags
- Canonical: https://fillsignpdf.com/

## Contact / Attribution

- For questions or issues: see the website footer
- Not affiliated with Adobe, ILovePDF, SmallPDF, or PDFfiller.com