# thenewcoderss/pdf-parser architecture

> Architecture diagram of the GitHub repository thenewcoderss/pdf-parser, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-06-27). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/thenewcoderss/pdf-parser
- Repository: https://github.com/thenewcoderss/pdf-parser

## Overview

This repository is a very small, browser-based demo application for PDF parsing. The visible surface consists of a single HTML page and a single JavaScript file, with no backend, build system, or package manifest present in the file tree.

The architecture is likely a classic static frontend split:
- `index.html` is the page shell and browser entry point.
- `app.js` contains the actual application logic, including whatever PDF-loading and parsing behavior the demo implements.
- `README.md` only provides the project label: “Demo pdf parser.”

The runtime boundary is the browser. There is no evidence of a server-side component, API layer, database, or worker service in the repository as shown. For an architecture diagram, this should be treated as a self-contained client-side demo rather than a multi-tier system.

The main functional subsystem is the PDF parser itself, which would be represented as the core logic inside `app.js`. Because there are no additional source files, any parsing, validation, or result transformation is probably centralized in that one script rather than split into services or modules.

`index.html` likely acts as the presentation and interaction layer: it provides the DOM container(s), input controls, and output region that `app.js` manipulates. In a diagram, this is the user-facing boundary between the browser and the app logic.

The data flow is probably straightforward:
1. User interacts with the page in `index.html`.
2. `app.js` receives the input event or file/content source.
3. The script parses PDF data in-browser.
4. Parsed output is rendered back into the page.

There is no visible persistence layer. Any parsed results are likely transient and kept in memory or displayed directly in the DOM. Likewise, there is no obvious external storage, authentication, or multi-user coordination boundary.

There is also no visible dependency-management or tooling layer. That suggests either plain vanilla JavaScript or dependencies loaded externally from the HTML, but nothing in the tree confirms a bundled or framework-based setup.

For an architecture diagram, the safest representation is:
- External actor: user in browser
- Presentation shell: `index.html`
- Application/parse logic: `app.js`
- Output: rendered parsed PDF data back in the browser

If you want to show boundaries, keep them coarse: “browser UI” and “client-side parsing logic.” Do not introduce backend or infrastructure boxes, since the repository snapshot does not support them.

Main entry points: [`index.html`](https://github.com/thenewcoderss/pdf-parser/blob/main/index.html) (Page shell), [`app.js`](https://github.com/thenewcoderss/pdf-parser/blob/main/app.js) (Parser logic)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_browser["Browser"]
  node_index_html["Page shell<br/>html entry<br/>[index.html]"]
  node_app_js["Parser logic<br/>javascript app<br/>[app.js]"]
  node_rendered_output["Parsed view<br/>dom output"]
end

node_user(("User<br/>actor"))
node_pdf_input["PDF file<br/>document input"]

node_user -->|"uses"| node_index_html
node_index_html -->|"loads"| node_app_js
node_user -->|"provides"| node_pdf_input
node_pdf_input -->|"parsed by"| node_app_js
node_index_html -->|"hosts"| node_rendered_output
node_app_js -->|"renders"| node_rendered_output

click node_index_html "https://github.com/thenewcoderss/pdf-parser/blob/main/index.html"
click node_app_js "https://github.com/thenewcoderss/pdf-parser/blob/main/app.js"

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_index_html,node_app_js,node_rendered_output toneBlue
class node_user,node_pdf_input toneNeutral
```

## Components

### Browser

Client-side runtime and UI boundary

- [Page shell](https://github.com/thenewcoderss/pdf-parser/blob/main/index.html): html entry · Browser entry point and DOM layout · `index.html`
- [Parser logic](https://github.com/thenewcoderss/pdf-parser/blob/main/app.js): javascript app · Main client-side PDF loading and parsing behavior · `app.js`
- **Parsed view**: dom output · Rendered parsing results shown back in the page

### Other components

- **User**: actor · Person interacting with the demo in a browser
- **PDF file**: document input · User-provided PDF data processed by the demo

## Connections

- User → Page shell: uses · Opens and interacts with the demo page
- Page shell → Parser logic: loads · Page shell includes the application script
- User → PDF file: provides · Selects or supplies a PDF to parse
- PDF file → Parser logic: parsed by · PDF data is handled entirely in the browser
- Page shell → Parsed view: hosts · The page provides the visible output area
- Parser logic → Parsed view: renders · Parsed results are written back into the DOM