NexaLab Toolbox

NexaLab Toolbox

Free, fast, browser-based data utilities. No sign-up, no data leaves your browser.

JSON/CSV Formatter

Paste messy JSON or CSV and get it instantly formatted

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PDF Split & Merge

Extract the pages you need or combine multiple PDFs into one

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Why NexaLab Toolbox?

Private by design

Every tool runs entirely in your browser. Your data and files are never sent to a server or stored anywhere.

No sign-up required

Just open a tool and start using it. No accounts, no email, no paywalls.

Fast and free

Results update instantly, and every tool is free to use as often as you like.