? Our story

Built for developers,
by developers

Simple ToolBox started as a collection of bookmarked one-off tools. We decided to build them all in one place - fast, private, and always free.

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Tools available
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Bytes sent to server
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Free, forever
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Privacy by Design
Every tool runs entirely in your browser. Your data never leaves your device - not even anonymously.
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Zero Friction
No sign-up, no paywall, no ads in your face. Open the tool, do the work, close the tab.
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Purpose-Built
Each tool is designed to solve exactly one problem, and to solve it well. No bloat, no distractions.
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Easy on the Eyes
A carefully crafted dark interface that stays out of your way during long coding sessions.

Our Story

It started with a frustration: every time we needed to encode a Base64 string or format a JSON blob, we'd spend 30 seconds searching Google, land on a sketchy ad-laden site, and wonder whether our API keys or personal data were being logged somewhere.

So we built Simple ToolBox - a clean, fast, privacy-first alternative. All tools run client-side using native browser APIs. We rely on crypto.getRandomValues(), TextEncoder, and standard JavaScript - no third-party SDKs, no telemetry.

We're continuously adding new tools. If there's something you'd like to see, reach out - we'd love to hear from you.

How It's Built

Vanilla HTML CSS Custom Properties Vanilla JavaScript Web Crypto API TextEncoder / TextDecoder No frameworks No build step No trackers

Have a tool suggestion?

We're always looking to add useful tools. Drop us a message.

Contact Us

Frequently Asked Questions

Is Simple ToolBox really free?
Yes. All tools are completely free to use. There is no subscription, no paywall, and no sign-up required.
Do the tools upload my data to a server?
No. Your text, files, and tool input are processed in your browser. We do not send what you enter in tools to our servers.
Who is Simple ToolBox built for?
Simple ToolBox is built for developers, designers, creators, students, and anyone who needs fast, reliable browser tools without ads or privacy concerns.