# 22321258muneermohamed/pdfeditor architecture

> Architecture diagram of the GitHub repository 22321258muneermohamed/pdfeditor, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-27). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/22321258muneermohamed/pdfeditor
- Repository: https://github.com/22321258muneermohamed/pdfeditor

## Overview

PDFEditor is a browser-based PDF editing application with an Express backend for PDF upload, text-block extraction, and applying text edits. The backend workflow is evidenced by sampled routes and services; frontend files indicate dashboard and editor capabilities, but their wiring is not established by the sampled source. The README provides no further capability details.

Main entry points: [`backend/src/controllers/pdf.controller.ts`](https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/controllers/pdf.controller.ts) (PDF Controller), [`backend/src/routes/pdf.routes.ts`](https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/routes/pdf.routes.ts) (PDF Routes), [`frontend/src/pages/EditorPage.tsx`](https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/pages/EditorPage.tsx) (Editor UI), [`frontend/src/pages/Dashboard.tsx`](https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/pages/Dashboard.tsx) (Dashboard)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_frontend["Frontend"]
  node_dashboard["Dashboard<br/>[Dashboard.tsx]"]
  node_upload["Upload UI<br/>[UploadArea.tsx]"]
  node_editor["Editor UI<br/>[EditorPage.tsx]"]
  node_viewer["PDF Viewer<br/>[PdfViewer.tsx]"]
  node_textlayer["Text Layer<br/>[PdfTextLayer.tsx]"]
  node_toolbar["Edit Controls<br/>[EditorToolbar.tsx]"]
  node_state["Editor State<br/>[editorStore.ts]"]
  node_pdfapi["PDF API Client<br/>[pdfApi.ts]"]
end

subgraph group_api["Backend API"]
  node_app["HTTP App<br/>[app.ts]"]
  node_routes["PDF Routes<br/>[pdf.routes.ts]"]
  node_controller["PDF Controller<br/>[pdf.controller.ts]"]
  node_uploadmw["Upload Middleware"]
  node_validation["Edit Validation"]
end

subgraph group_processing["PDF Processing"]
  node_info["PDF Metadata<br/>[pdf.service.ts]"]
  node_extract["Text Extraction<br/>[pdfText.service.ts]"]
  node_edit["Edit Resolution<br/>[pdfEdit.service.ts]"]
end

node_user(("User"))
node_pdf["PDF Document"]

node_user -->|"opens"| node_dashboard
node_dashboard -->|"offers upload"| node_upload
node_app -->|"mounts"| node_routes
node_routes -->|"uses"| node_uploadmw
node_routes -->|"validates edits"| node_validation
node_routes -->|"dispatches"| node_controller
node_controller -->|"reads metadata"| node_info
node_controller -->|"extracts blocks"| node_extract
node_controller -->|"resolves and applies"| node_edit
node_edit -->|"re-extracts blocks"| node_extract
node_user -->|"edits PDF"| node_editor
node_editor -->|"presents pages"| node_viewer
node_viewer -->|"shows text"| node_textlayer
node_editor -->|"offers controls"| node_toolbar
node_toolbar -->|"updates edits"| node_state
node_pdfapi -->|"calls PDF endpoints"| node_routes
node_upload -->|"submits PDF"| node_pdfapi
node_pdf -->|"uploaded file"| node_uploadmw
node_controller -->|"returns edited PDF"| node_pdf

click node_dashboard "https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/pages/Dashboard.tsx"
click node_upload "https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/components/dashboard/UploadArea.tsx"
click node_editor "https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/pages/EditorPage.tsx"
click node_viewer "https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/components/pdf/PdfViewer.tsx"
click node_textlayer "https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/components/pdf/PdfTextLayer.tsx"
click node_toolbar "https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/components/editor/EditorToolbar.tsx"
click node_state "https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/stores/editorStore.ts"
click node_pdfapi "https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/services/pdfApi.ts"
click node_app "https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/app.ts"
click node_routes "https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/routes/pdf.routes.ts"
click node_controller "https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/controllers/pdf.controller.ts"
click node_uploadmw "https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/middleware/upload.middleware.ts"
click node_validation "https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/middleware/validation.middleware.ts"
click node_info "https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/services/pdf.service.ts"
click node_extract "https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/services/pdfText.service.ts"
click node_edit "https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/services/pdfEdit.service.ts"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_dashboard,node_upload,node_editor,node_viewer,node_textlayer,node_toolbar,node_state,node_pdfapi,node_user toneBlue
class node_app,node_routes,node_controller,node_uploadmw,node_validation toneAmber
class node_info,node_extract,node_edit toneMint
class node_pdf toneIndigo
```

## Components

### Frontend

- [Dashboard](https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/pages/Dashboard.tsx): `frontend/src/pages/Dashboard.tsx`
- [Upload UI](https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/components/dashboard/UploadArea.tsx): `frontend/src/components/dashboard/UploadArea.tsx`
- [Editor UI](https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/pages/EditorPage.tsx): `frontend/src/pages/EditorPage.tsx`
- [PDF Viewer](https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/components/pdf/PdfViewer.tsx): `frontend/src/components/pdf/PdfViewer.tsx`
- [Text Layer](https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/components/pdf/PdfTextLayer.tsx): `frontend/src/components/pdf/PdfTextLayer.tsx`
- [Edit Controls](https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/components/editor/EditorToolbar.tsx): `frontend/src/components/editor/EditorToolbar.tsx`
- [Editor State](https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/stores/editorStore.ts): `frontend/src/stores/editorStore.ts`
- [PDF API Client](https://github.com/22321258muneermohamed/pdfeditor/blob/main/frontend/src/services/pdfApi.ts): `frontend/src/services/pdfApi.ts`

### Backend API

- [HTTP App](https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/app.ts): `backend/src/app.ts`
- [PDF Routes](https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/routes/pdf.routes.ts): `backend/src/routes/pdf.routes.ts`
- [PDF Controller](https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/controllers/pdf.controller.ts): `backend/src/controllers/pdf.controller.ts`
- [Upload Middleware](https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/middleware/upload.middleware.ts): `backend/src/middleware/upload.middleware.ts`
- [Edit Validation](https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/middleware/validation.middleware.ts): `backend/src/middleware/validation.middleware.ts`

### PDF Processing

- [PDF Metadata](https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/services/pdf.service.ts): `backend/src/services/pdf.service.ts`
- [Text Extraction](https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/services/pdfText.service.ts): `backend/src/services/pdfText.service.ts`
- [Edit Resolution](https://github.com/22321258muneermohamed/pdfeditor/blob/main/backend/src/services/pdfEdit.service.ts): `backend/src/services/pdfEdit.service.ts`

### Other components

- **User**
- **PDF Document**

## Connections

- User → Dashboard: opens
- Dashboard → Upload UI: offers upload
- HTTP App → PDF Routes: mounts
- PDF Routes → Upload Middleware: uses
- PDF Routes → Edit Validation: validates edits
- PDF Routes → PDF Controller: dispatches
- PDF Controller → PDF Metadata: reads metadata
- PDF Controller → Text Extraction: extracts blocks
- PDF Controller → Edit Resolution: resolves and applies
- Edit Resolution → Text Extraction: re-extracts blocks
- User → Editor UI: edits PDF
- Editor UI → PDF Viewer: presents pages
- PDF Viewer → Text Layer: shows text
- Editor UI → Edit Controls: offers controls
- Edit Controls → Editor State: updates edits
- PDF API Client → PDF Routes: calls PDF endpoints
- Upload UI → PDF API Client: submits PDF
- PDF Document → Upload Middleware: uploaded file
- PDF Controller → PDF Document: returns edited PDF