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+# VERIFIED_FEATURES.md - zcatpdf
+
+Estado de verificación de funcionalidades en aplicaciones reales.
+
+**Leyenda:**
+- ✅ **Verificado** - Probado en aplicación real, funciona correctamente
+- ⚠️ **Tests only** - Solo tests unitarios, no probado en app real
+- 🔧 **Mejorado** - Probado y mejorado/corregido durante uso real
+- ❌ **Incompleto** - Conocido como incompleto o con limitaciones
+- ❓ **Sin probar** - No tiene tests ni uso real
+
+---
+
+## Core
+
+### pdf.zig
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| PDF.init | ⚠️ | Tests only |
+| PDF.addPage | ⚠️ | Tests only |
+| PDF.render | ⚠️ | Tests only |
+| PDF.save | ⚠️ | Tests only |
+
+### page.zig
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Page sizes (A4, Letter...) | ⚠️ | Tests only |
+| Page orientation | ⚠️ | Tests only |
+| Margins | ⚠️ | Tests only |
+
+### content_stream.zig
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Text rendering | ⚠️ | Tests only |
+| Graphics primitives | ⚠️ | Tests only |
+| Coordinate system | ⚠️ | Tests only |
+
+---
+
+## Texto
+
+### fonts/
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Built-in fonts (Helvetica, Times...) | ⚠️ | Tests only |
+| Font embedding | ❓ | Sin probar |
+| TTF support | ❓ | Sin probar |
+| Unicode text | ❓ | Sin probar |
+
+### text/
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Basic text | ⚠️ | Tests only |
+| Text alignment | ❓ | Sin probar |
+| Text wrapping | ❓ | Sin probar |
+| Line spacing | ❓ | Sin probar |
+
+---
+
+## Gráficos
+
+### graphics/
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Lines | ⚠️ | Tests only |
+| Rectangles | ⚠️ | Tests only |
+| Circles | ❓ | Sin probar |
+| Paths | ❓ | Sin probar |
+| Colors (RGB, CMYK) | ⚠️ | Tests only |
+| Stroke/Fill | ⚠️ | Tests only |
+
+---
+
+## Tablas
+
+### table.zig
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Basic table | ⚠️ | Tests only |
+| Cell borders | ❓ | Sin probar |
+| Cell alignment | ❓ | Sin probar |
+| Column widths | ❓ | Sin probar |
+| Row spanning | ❓ | Sin probar |
+| Col spanning | ❓ | Sin probar |
+
+---
+
+## Imágenes
+
+### images/
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| PNG embedding | ❓ | Sin probar |
+| JPEG embedding | ❓ | Sin probar |
+| Image scaling | ❓ | Sin probar |
+
+---
+
+## Códigos de Barras
+
+### barcodes/
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Code128 | ❓ | Sin probar |
+| QR Code | ❓ | Sin probar |
+| EAN | ❓ | Sin probar |
+
+---
+
+## Avanzado
+
+### forms/
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Form fields | ❓ | Sin probar |
+| Checkboxes | ❓ | Sin probar |
+| Text fields | ❓ | Sin probar |
+
+### security/
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Password protection | ❓ | Sin probar |
+| Permissions | ❓ | Sin probar |
+| Encryption | ❓ | Sin probar |
+
+### compression/
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Stream compression | ⚠️ | Tests only |
+| Deflate | ⚠️ | Tests only |
+
+### outline.zig (Bookmarks)
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Bookmarks | ❓ | Sin probar |
+| Document outline | ❓ | Sin probar |
+
+### links.zig
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Internal links | ❓ | Sin probar |
+| External URLs | ❓ | Sin probar |
+
+### pagination.zig
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Auto pagination | ❓ | Sin probar |
+| Page breaks | ❓ | Sin probar |
+
+### template/
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Templates | ❓ | Sin probar |
+
+### markdown/
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| Markdown to PDF | ❓ | Sin probar |
+
+### svg/
+| Feature | Estado | Notas |
+|---------|--------|-------|
+| SVG embedding | ❓ | Sin probar |
+
+---
+
+## Historial de Verificación
+
+| Fecha | Proyecto | Features Verificadas |
+|-------|----------|---------------------|
+| - | - | Ninguna verificada en producción aún |
+
+---
+
+## Próximos a Verificar (Prioridad zsimifactu)
+
+1. **PDF básico** - Crear documento, añadir página, guardar
+2. **Texto** - Escribir texto con fuente básica
+3. **Tablas** - Para facturas (líneas, totales)
+4. **Códigos de barras** - VeriFacTu requiere QR
+5. **Imágenes** - Logo empresa