Kostenloser QR Code Generator
Why Choose Developer Toolbox?
The all-in-one toolkit trusted by thousands of developers worldwide
tools.json-formatter.title
tools.json-formatter.desc
tools.base64.title
tools.base64.desc
tools.text-case.title
tools.text-case.desc
tools.uuid.title
tools.uuid.desc
tools.text-concat.title
tools.text-concat.desc
tools.hash.title
tools.hash.desc
tools.chinese-pinyin.title
tools.chinese-pinyin.desc
tools.url-encode.title
tools.url-encode.desc
tools.full-half-width.title
tools.full-half-width.desc
tools.markdown-editor.title
tools.markdown-editor.desc
tools.traditional-simplified.title
tools.traditional-simplified.desc
tools.regex-tester.title
tools.regex-tester.desc
tools.remove-html.title
tools.remove-html.desc
tools.timestamp.title
tools.timestamp.desc
tools.code-filter.title
tools.code-filter.desc
tools.color-converter.title
tools.color-converter.desc
tools.html-unescape.title
tools.html-unescape.desc
tools.qr-code.title
tools.qr-code.desc
tools.vertical-text.title
tools.vertical-text.desc
tools.jwt-decoder.title
tools.jwt-decoder.desc
tools.color-text.title
tools.color-text.desc
categories.title
categories.subtitle
Why Choose Developer Toolbox?
The all-in-one toolkit trusted by thousands of developers worldwide
Lightning Fast
All 50+ tools run instantly in your browser. No servers, no uploads, no waiting. Every operation completes in milliseconds.
100% Private
Zero data ever leaves your device. All processing happens locally using modern browser crypto APIs. Your code and credentials stay with you.
50+ Tools
From JSON formatting to CSS generators to QR codes everything you need daily in one clean interface instead of dozens of bookmarks.
Export Anywhere
Download results in all popular formats, copy to clipboard, or save files. Everything works even on mobile.
Unlimited & Free
All tools are completely free with unlimited usage. No signups, no watermarks, no rate limits, ever.
Responsive Design
Works perfectly on desktops, tablets, and phones. Full touch-friendly mobile-first UI for developers on the go.
How It Works
Find, use, done in 3 simple steps
Find Your Tool
Browse 9 categories or use search to find exactly what you need instantly.
Enter Your Input
Paste data, adjust settings, customize everything with our clean distraction-free interface.
Get Results
Copy output, download files, everything works instantly right in browser.
Frequently Asked Questions
Everything you need to know about Developer Toolbox
Are really all tools free? +
Yes! All 50+ tools are 100% completely free with unlimited usage. No subscriptions required. No watermarks, no ads interfering with your work.
Is my data safe? +
Absolutely. Everything happens in your own browser. We never send any data to an external server. Your data stays on your device, 100% private and secure with all processing done client-side only.
What browsers are supported? +
Works on all modern desktop and mobile browsers including Chrome, Firefox, Safari, Edge latest two versions.
Can I use these tools offline? +
Once you load our website in your browser, most tools work fully offline-capable after first load. No server-dependence for any core functionality.
How often are new tools added? +
We add new tools every single month. Follow our roadmap on the About page. For ideas please visit the Contact page to suggest your next feature.
Can I suggest a tool? +
Absolutely! Contact us anytime with feature requests or suggestions. We read every single message.
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