Serverless File Translation System

Live Demo

🔗 Try the live demo — a lightweight version of this system deployed on Vercel for easy testing (uses a public translation API in place of AWS Translate, since Vercel doesn't run AWS infrastructure).

For more details take a look at : (https://github.com/mancitizen17/file-translator) The architecture below is what's actually deployed on AWS.

Overview

Developed a serverless application that automatically processes and translates text files using AWS S3 and AWS Lambda. The system triggers a Lambda function whenever a file is uploaded, processes the content, and stores translated outputs.

Architecture

S3 Bucket → Lambda Trigger → Text Processing → AWS Translate → Output Storage

Features

• Event-driven architecture using AWS S3 and Lambda
• Automatic translation of uploaded text files
• Support for multiple target languages
• File validation to process only .txt files
• Structured logging and error handling for reliability

Tech Stack

• AWS S3
• AWS Lambda
• AWS Translate
• Node.js

Key Improvements

• Added input validation to prevent invalid file processing
• Implemented structured logging for better debugging
• Enhanced error handling for robustness

How It Works

1. Upload a .txt file to the S3 bucket
2. Lambda function is triggered automatically
3. File content is translated into multiple languages
4. Translated files are stored in the translations/ folder