PKPCB - RAR/ZIP Web Viewer

PKPCB - RAR/ZIP Web Viewer - Graber Viewer for RAR and ZIP files at Unmatched Low Price

PKPCB - RAR/ZIP Web Viewer

Technologies Used

Next.js
Vue.js
TypeScript
CSS
Unzipper
unrar.js

About the Project

PKPCB is a fully frontend-based web application that lets users preview RAR and ZIP archive contents directly in the browser using JavaScript. It’s built for speed, privacy, and affordability — no backend required.

Key Features & Innovations

  • Preview .rar and .zip file contents directly in-browser with no backend.
  • Uses client-side decompression powered by `unzipper` and `unrar.js`.
  • Drag and drop support with live folder/file tree structure.
  • Works offline after first load (PWA-ready).
  • Zero user data sent to server — complete privacy.

The Challenge

The main challenge was implementing archive parsing and tree rendering entirely on the client-side without consuming too much memory or crashing the browser.

  • No Backend LogicHad to rely fully on browser APIs and client-side libraries like `unrar.js` and `unzipper`.
  • Performance on Large ArchivesRendering large file trees from multi-MB archives required efficient traversal and memory management.
  • Cross-Library IntegrationManaging Vue components inside a primarily Next.js app with strict TypeScript config.

Our Solution

We optimized everything for client-side efficiency by streaming file reads and lazy-rendering UI components, and modularized the Vue integrations cleanly.

  • Streaming Archive ReadersUsed `unzipper` and `unrar.js` to parse archives in chunks directly in the browser.
  • TypeScript & Component SafetyStrict type checking and isolated components to avoid runtime issues.
  • Clean Vue IntegrationEmbedded Vue logic into standalone components and mounted them where needed via micro-frontend style setup.

Why This Project Stands Out?

  • 🔹
    Truly BackendlessAlmost no tools offer RAR/ZIP preview like this without a backend.
  • 🔹
    Cross-Framework MagicBuilt with both Next.js and Vue.js in harmony, using TypeScript and pure CSS.

The Results

🚀
Zero Backend Hosting Cost:

Since everything runs on the frontend, there's no server cost — pure JAMstack.

📈
Private & Secure:

No data ever leaves the user’s machine, making it ideal for sensitive files.

📊
Loved by Devs & Designers:

A clean and functional tool for anyone dealing with compressed files online.

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