Free Developer Tools

Browser-based tools for developers. No signup, no install, just tools that work.

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🛠️ Developer Tools

Regex TesterLive matching & highlighting

JSON FormatterFormat, validate, beautify

JWT DecoderDecode tokens & claims

UUID Generatorv4, v7, ULID — bulk

Cron GeneratorBuild & validate schedules

Unix TimestampEpoch ↔ date converter

Base64 EncoderEncode & decode

JSON ↔ YAMLConvert formats

🌐 Network Tools

Subnet CalculatorVisual subnet planning

CIDR CalculatorNetwork analysis

IP Address BlocksNetwork details from IP

Password GeneratorStrong secure passwords

⚙️ Utilities

Color PaletteGenerate color schemes

Word CounterCount words & characters

Percentage CalculatorCalculate percentages

Unit ConverterConvert measurements

SEO Meta GeneratorOptimize meta tags

🧩 Chrome Extensions

Run JavaScriptCustom JS on any site · 25K+ users

User-Agent SwitcherSwitch browser identity

GoFasterKeyboard tab navigation

VideoGrabDownload web videos

YouTuneYouTube audio-only

All tools are free. No signup required.

Everything runs in your browser. Nothing is sent to a server.

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