Free Online Developer Tools to Simplify Your Daily Workflow

Introduction

As developers, we work with data every single day.

Whether it’s JSON responses from APIs, CSV exports from databases, JWT tokens, timestamps, or SQL queries — small formatting and conversion tasks are part of our routine.

To make these tasks easier and faster, I built a simple Developer Tools platform that includes the most commonly used utilities in one place.

In this article, I’ll briefly explain each tool and how it can help simplify your workflow.

JSON Viewer

Large JSON files can be difficult to read and may even freeze the browser when improperly formatted.

The JSON Viewer helps you:

  • View and format large JSON files

  • Expand and collapse nested objects

  • Read deeply structured data more easily

  • Detect invalid JSON instantly

It is designed to handle large JSON more efficiently and keep the interface responsive.

If you work with API responses, logs, or webhook payloads, this tool can save you a lot of time.

JSON to CSV Converter

APIs usually return data in JSON format, but many business tools and spreadsheets require CSV.

The JSON to CSV Converter allows you to:

  • Convert structured JSON data into CSV format

  • Quickly export API responses to Excel

  • Transform data for reporting

Just paste your JSON and get a properly formatted CSV output instantly.

This is especially useful when working with reporting tools or sharing structured data with non-technical teams.

CSV to JSON Converter

If you have CSV data from Excel or a database export and need to use it in an application, converting it to JSON becomes necessary.

The CSV to JSON Converter helps you:

  • Convert rows into structured JSON

  • Prepare data for APIs

  • Work with structured formats in JavaScript applications

It removes the need for manual conversion.

XML Formatter

XML can be hard to read when compressed into a single line.

The XML Formatter:

  • Beautifies XML

  • Adds proper indentation

  • Makes nested tags readable

  • Highlights invalid XML

It is especially helpful when debugging integrations or configuration files.

Base64 Encoder & Decoder

Base64 encoding is commonly used in:

  • Authentication headers

  • Tokens

  • Data transfer

  • Emails

The Base64 Encoder/Decoder allows you to:

  • Encode text into Base64

  • Decode Base64 into readable text

  • Quickly test encoded values

A simple tool, but very useful during debugging.

Timestamp Converter

Unix timestamps are common in logs and APIs, but not easy to read directly.

The Timestamp Converter lets you:

  • Convert Unix timestamps into human-readable dates

  • Convert readable dates back into timestamps

  • Understand time-based data quickly

This is particularly useful when analysing logs or troubleshooting time-related issues.

JWT Decoder

JWT (JSON Web Token) is widely used for authentication.

The JWT Decoder allows you to:

  • Decode the header and payload

  • Inspect token details

  • Check expiration time

It helps you debug authentication flows easily.

SQL Formatter

Unformatted SQL queries can be difficult to read and maintain.

The SQL Formatter:

  • Organises queries with proper indentation

  • Improves readability

  • Makes debugging easier

Especially helpful for complex joins and nested queries.

Privacy & Security

One important aspect of these tools is privacy.

All processing happens directly in the browser:

  • No data is stored

  • No input is sent to any server

  • Nothing is saved

  • Your data remains on your device

This ensures a secure and safe experience, even when working with sensitive data.

Why These Tools Matter

Small repetitive tasks can slow down development.

Instead of switching between multiple websites or writing small scripts repeatedly, having essential developer tools in one place improves productivity and efficiency.

The goal of this platform is simple:

  • Fast

  • Lightweight

  • Secure

  • Easy to use

More tools and improvements will continue to be added.

Final Thoughts

If you regularly work with JSON, CSV, XML, SQL, JWT tokens, or timestamps, having quick and reliable utilities can make your daily workflow smoother.

I’d love to hear which tool you find most useful and what additional features would help you the most.

Summary

This Developer Tools platform brings together commonly used utilities such as JSON viewers, format converters, SQL formatting, JWT decoding, and timestamp conversion into one lightweight and secure interface. By handling all processing locally in the browser, it ensures privacy while helping developers save time on everyday formatting and debugging tasks.