Developer Tools9 Free Tools⚡ 100% Client-Side

Developer Tools

Privacy-focused utilities for software engineers and web developers. Format JSON, encode URLs, generate cryptographic UUIDs, and decode tokens entirely client-side.

Available Developer Tools

9 free online developer tools ready to use without signup.

Developer Tools🔒 Local

JSON Formatter & Validator

Prettify, validate, and minify JSON data with syntax checks.

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Developer Tools🔒 Local

Base64 Encoder & Decoder

Encode to Base64 or decode Base64 to text with UTF-8 support.

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Developer Tools🔒 Local

UUID / GUID Generator

Generate random UUID v4 / GUID identifiers in bulk.

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Developer Tools🔒 Local

URL Encoder / Decoder

Encode and decode percent-encoded URLs and URI components.

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Developer Tools🔒 Local

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates (UTC & Local).

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Developer Tools🔒 Local

Color Converter

Convert colors between HEX, RGB, HSL, and HSV with live preview.

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Developer Tools🔒 Local

HTML Formatter & Minifier

Beautify, indent, and minify HTML markup locally in your browser.

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Developer Tools🔒 Local

Regex Tester

Test, debug, and preview regular expressions and replacements in real-time.

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Developer Tools🔒 Local

QR Code Generator

Generate customizable QR codes locally for text and URLs with instant PNG/SVG download.

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⚡

Instant Results

All calculations and conversions run entirely inside your browser for zero latency and instant output.

🔒

Private & Secure

Your sensitive files and text never leave your machine. No cloud uploads, no server logging.

💎

100% Free Forever

Enjoy unrestricted access to all features without account registration, subscriptions, or hidden limits.

Explore Other Tool Categories

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Calculators

7 tools

Fast, accurate online math and life calculators.

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Converters

3 tools

Convert units of measurement, weight, temperature, and length.

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Text Tools

5 tools

Count words, format cases, clean whitespace, and analyze writing.

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Productivity Tools

Timers, stopwatches, random pickers, and password generators.

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Student Tools

GPA calculators, grade planners, fraction tools, and study aids.

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Finance Tools

Compound interest, loan repayments, profit margins, and sales tax.

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