Bui Trong Khanh Duy / Full-stack developer / Vietnam

Software engineer simplifying ideas with technology.

I'm Khanh Duy, a full-stack developer in Ho Chi Minh City. For 5+ years, I've shipped web and mobile products that turn complex ideas into fast, simple, reliable experiences with JavaScript, React, TypeScript, and Next.js.

Experience

5+ years

Stack

JS / TS / React

Free tools

20 tools

AI agents

10 agents

Currently

Vietnam / GMT+7

Building useful AI systems that people can actually operate.

Products

Two serious products, one compact story.

AI research platform2,000+ researchers

ChatAcademia

A research workspace for searching papers, talking with frontier models, finding gaps, and moving from idea to citation-backed draft.

Next.jsAI agentsAcademic searchSubscriptions

Document intelligence APIstructured extraction

PDF Vector

A scalable PDF processing API for extracting structured data from complex documents and powering document automation systems.

API designPDF parsingRAG pipelinesSchema extraction

Open source automation library

Document workflows, packaged like a product.

A public GitHub workbench for PDF Vector workflows: clone it, inspect the JSON, and drop real document automation into the tools your team already operates.

View GitHub

Workflow bankn8n / Make / Zapier

GitHub repository

khanhduyvt0101/workflows

Awesome PDF Automation Workflows, a curated collection of ready-to-use document extraction and PDF processing recipes for operational teams.

Open repository

clone source

public

git clone https://github.com/khanhduyvt0101/workflows.git

n8n-workflows/*.json -> import, adapt, run

Invoice, receipt, PO, bank statement, and AP approval automation

Healthcare, insurance, KYC, compliance, lease, and shipping document flows

Research, resume, transcript, grant, and knowledge-work extraction recipes

workflow files

stars

forks

open issues

live file index

main

Free AI agents

Use small agents for real work.

Show all

Email Digest Agent

Turn long email threads into decisions, blockers, and replies.

Run

AutoHybrid

Input

email, text

Workflows

Support triage, Executive digest, Reply draft

File to Data Agent

Upload text, CSV, JSON, or logs and get structured data back.

Run

HF modelLocal first

Input

file, text

Workflows

Extract rows, Data dictionary, Import package

Private Summarizer

Summarize pasted content locally before anything touches a server.

Run

Chrome AILocal first

Input

text

Workflows

Meeting recap, Research brief, Decision log

Day Planner Agent

Turn a messy life-admin brain dump into a realistic day plan.

Run

AutoLocal first

Input

text

Workflows

Daily reset, Life admin sprint, Busy week triage

Data Cleaner Agent

Normalize messy lists, copied tables, and exported CSV content.

Run

HF modelLocal first

Input

file, text

Workflows

Clean contacts, Spreadsheet prep, QA report

Subscription Audit Agent

Find recurring charges, renewal risks, and realistic cancellation targets.

Run

AutoLocal first

Input

text, file

Workflows

Subscription cleanup, Monthly bill map, Renewal watchlist

Free tools

The useful links, without the maze.

Show all

Palette From Image

Extract a usable color palette from a product or brand image.

Open tool

Image Compressor

Shrink large screenshots and product images before uploading.

Open tool

Images to PDF

Combine receipts, screenshots, and scans into a single PDF file.

Open tool

JSON Formatter

Format, validate, and inspect JSON payloads without uploading data.

Open tool

QR Code Generator

Create QR codes for URLs, Wi-Fi credentials, contacts, and short text.

Open tool

Timestamp Converter

Convert Unix timestamps into readable local and UTC dates.

Open tool

Showing 1-6 of 20 free tools