Developer Tools Tools

JSON, Base64, UUID, JWT and more developer utilities. Free, browser-based — no signup required.

7 free tools available

Explore our collection of free developer tools tools below. Every tool runs entirely in your browser — your data is never uploaded or stored. Simply pick a tool and get instant results, no installation or account needed.

All Developer Tools Tools (7)

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JSON Formatter

Format, validate and minify JSON instantly

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Base64 Encoder / Decoder

Encode or decode Base64 strings in your browser

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UUID Generator

Generate v4 UUIDs instantly — bulk or single

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JWT Decoder

Decode and inspect JWT tokens instantly

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URL Encoder / Decoder

Encode or decode URLs and query strings

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CSV ↔ JSON Converter

Convert between CSV and JSON formats in one click

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SQL Formatter

Format and beautify SQL queries instantly

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Why Use Free Developer Tools Tools on ToolFocus?

All developer tools tools on ToolFocus are designed to be fast, private, and accessible to everyone. Whether you are a professional or a beginner, our tools help you get the job done without friction.

Instant & Offline-Ready

All processing happens locally in your browser with zero latency.

Private by Design

Your input never leaves your device — no server, no logs.

Always Free

No pricing plans, no limits. Free for everyone, forever.

Works on Any Device

Fully responsive — desktop, tablet, and smartphone.

Frequently Asked Questions

What developer tools tools are available on ToolFocus?

ToolFocus offers 7 free developer tools tools including JSON Formatter, Base64 Encoder / Decoder, UUID Generator, and more. All tools run in your browser with no signup required.

Are the developer tools tools really free?

Yes. Every developer tools tool on ToolFocus is completely free with no usage limits, no premium tier, and no account needed.

Is my data safe when using developer tools tools?

Absolutely. All tools process data directly in your browser. Nothing is ever sent to or stored on our servers, so your data stays completely private.

Can I use developer tools tools on my phone?

Yes. All ToolFocus tools are fully responsive and work seamlessly on smartphones, tablets, and desktop browsers.

Do I need to install anything to use these tools?

No. Simply open any tool in your browser and start using it immediately — no download, no extension, and no account required.