Free developer tools that don't suck. Built for devs who ship fast.
Stop juggling 12 converter tabs. Paste any dev string — JSON, JWT, base64, timestamps, colors, regex, cron, URLs, CSV, SQL — and get instant format detection, conversions, and visual breakdowns. Runs in your browser.
Try it → NEW ⚙️Visual Linux file permission editor. Toggle read, write, and execute for owner, group, and others — get the octal notation, symbolic notation, and ready-to-use chmod commands instantly.
Try it → NEW 🔤Encode text to Base64 or decode Base64 to text. Supports file upload for images (shows data URI), URL-safe mode, and line wrapping options.
Try it → NEW ⏰Build cron expressions visually. Select schedule intervals, preview next run times, and copy the expression for your crontab or CI pipeline.
Try it → NEW 📋Paste messy JSON and get it instantly formatted, validated, and syntax-highlighted. Supports minify, sort keys, and tree view.
Try it → NEW 🔗Generate UTM-tagged URLs for campaign tracking. Fill in source, medium, campaign, and get a ready-to-share link with Google Analytics parameters.
Try it → NEW 🎨Convert colors between HEX, RGB, HSL, and CMYK. Visual color picker with real-time preview and copy-ready CSS values.
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