Free Online Developer Tools

A curated collection of fast, lightweight tools to help developers format, convert, debug, and analyze data — directly in the browser.

✔ No signup required ✔ Runs in your browser ✔ Free for developers

Most Popular Tools

JSON Formatter & Validator

Format, validate, and beautify JSON data.

JSON to C# Class Generator

Generate C# POCO classes from JSON.

IP Location Finder

Find geolocation details of any IP address.

Text & Code Utilities

JSON Formatter

Format and validate JSON quickly.

Base64 Encoder

Encode text to Base64 format.

Base64 Decoder

Decode Base64 strings to text.

PDF & File Tools

Merge PDF

Combine multiple PDFs into one.

Split PDF

Extract pages from a PDF file.

Network & Utility Tools

IP Location Finder

Lookup IP address location details.

Frequently Asked Questions

Are these tools free?

Yes. All tools on NiceOneCode are free to use.

Is my data stored?

No. Most tools run entirely in your browser.

Do I need to create an account?

No signup is required to use the tools.

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