Text & String

Word Counter Case Converter String Reverse Duplicate Line Remover Sort Lines Text Diff Checker Lorem Ipsum Generator Slug Generator Text Repeater

Web / HTML

HTML Encoder/Decoder URL Encoder/Decoder HTML Formatter HTML Minifier HTML to Markdown Markdown to HTML Meta Tag Generator OG Tag Generator Robots.txt Generator .htaccess Generator Favicon Generator

CSS Tools

CSS Formatter CSS Minifier Box Shadow Generator Border Radius Generator Gradient Generator Flexbox Visualizer Grid Generator px ↔ rem Converter CSS Specificity Calc

JS & JSON

JS Formatter JS Minifier JSON Formatter JSON to CSV JSON to XML JSON Path Tester

Encode & Hash

Base64 Encoder/Decoder URL-Safe Base64 MD5 Hash Generator SHA Hash Generator HMAC Generator BCrypt Hash Generator JWT Decoder Password Generator Password Strength File Hash Generator

Generators

UUID Generator Nano ID Generator Random String Generator QR Code Generator Barcode Generator

Date & Time

Unix Timestamp Date Difference Timezone Converter Cron Builder

Color Tools

Color Picker Palette Generator Contrast Checker Tint & Shade Image Color Extractor

Regex & Testing

Regex Tester Diff Checker cURL Generator HTTP Status Codes MIME Type Lookup

Number & Math

Number Base Converter Roman Numeral Converter Random Number Generator Percentage Calculator Ratio Calculator

Miscellaneous

IP Lookup DNS Lookup SSL Checker Word Frequency CSV Table Viewer CSV to JSON XML Formatter YAML to JSON JSON to YAML SVG Optimizer
79 free tools · no sign-up required
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About

About DevToolShack

Free tools, built for developers, with no strings attached.

What is DevToolShack?

DevToolShack is a free collection of 79 browser-based developer tools. Whether you need to format a JSON response, generate a UUID, check a regex, convert a color, or decode a JWT token — it's all here, free, instant, and without any account required.

Every tool on DevToolShack runs entirely in your browser. Nothing is uploaded to our servers. Nothing is stored. Your data stays on your machine.

Why We Built It

Developer tools should be fast, free, and frictionless. Too many tools online require sign-ups, impose usage limits, or are buried in feature-bloated products. DevToolShack exists to be the opposite — open the page, use the tool, get back to work.

Part of a Network

DevToolShack is part of a small network of free, focused web tools including ImageToolHub (image editing tools), InterestCalculators (financial calculators), CompareAIs (AI model comparison), and TopWebPositions (free SEO tools). All free, all focused, all no sign-up required.

Contact Us

Found a bug? Have a tool suggestion? We read every message. Get in touch here.