SmartDevUtils

110+ offline developer tools inside VS Code — no internet required.

Format JSON, encode/decode, generate UUIDs, hash text, test regex, convert colours, and much more — all without leaving your editor, with zero data sent to any server.

Features

• 110+ tools across 9 categories, all running 100% locally
• Works offline — no internet connection required
• No sign-up, no telemetry — your data never leaves your machine
• Side panel — persistent tools panel in the Activity Bar
• Inline actions — transform selected text directly in the editor
• Right-click menu — send selected text to any tool instantly
• Keyboard shortcuts — open the panel or run inline actions without touching the mouse

Getting Started

Open the Panel

• Click the ⚡ SmartDevUtils icon in the Activity Bar (left sidebar)
• Or press Ctrl+Shift+D (Cmd+Shift+D on Mac)
• Or run SmartDevUtils: Open from the Command Palette (Ctrl+Shift+P)

Use a Tool on Selected Text

1. Select any text in your editor
2. Press Ctrl+Shift+T (Cmd+Shift+T on Mac) → pick a tool from the quick-pick list
3. The result replaces or is shown alongside your selection

Right-Click Menu

Select text → right-click → SmartDevUtils submenu for one-click inline actions:

• Base64 Encode / Decode
• URL Encode / Decode
• JSON Format / Minify
• MD5 Hash / SHA-256 Hash
• Insert UUID
• Insert Timestamp

Keyboard Shortcuts

Tools

Encoders & Decoders

• Base64 Encode / Decode
• URL Encode / Decode
• HTML Entities Encode / Decode / Reference

Formatters & Minifiers

• JSON Format · Minify · Validate
• CSS Format · Minify
• JavaScript Format · Minify (Terser)
• SQL Format · Minify

Text Tools

• Text Case Converter — camelCase, PascalCase, snake_case, kebab-case, UPPER, lower, Title
• Word & Character Counter — words, chars, sentences, reading time
• Text Cleaner — strip extra spaces, blank lines, trailing whitespace
• Slug Generator & Checker — URL slug generation and validation
• Line Sorter & Deduplicator — sort A→Z, Z→A, by length, reverse, shuffle, dedupe, remove blanks
• Lorem Ipsum Generator — paragraphs, sentences, or words
• Whitespace Visualiser — reveal hidden whitespace characters
• String Escape / Unescape

Compare & Diff

• JSON Compare — side-by-side diff with character-level highlighting
• Text Compare — side-by-side text diff

Developer Tools

• UUID Generator — batch v4 UUID generation
• Regex Tester — live match highlighting with flags support
• QR Code Generator
• Number Base Converter — Binary, Octal, Decimal, Hex
• Byte Size Converter — B, KB, MB, GB, TB
• URL Parser — break down any URL into its components
• String Escape / Unescape

Date & Time

• Timestamp Converter — epoch ↔ human-readable
• Epoch / Unix Timestamp Converter — with duration calculator

Security & Hashing

• Hash Generator — MD5 · SHA-1 · SHA-256 · SHA-384 · SHA-512 · HMAC-SHA256 · HMAC-SHA384 · HMAC-SHA512
• Password Generator — configurable length, charset, and strength

CSS & Color Tools

• Color Converter — HEX ↔ RGB ↔ HSL
• Color Contrast Checker — WCAG AA/AAA ratio checker

Developer Reference

• HTTP Status Code Reference — all codes with descriptions
• chmod Calculator — octal ↔ symbolic permissions

Commands

Privacy

All processing happens entirely within VS Code. No network requests are made. No usage data, no analytics, no telemetry.

Links

• smartdevutils.com — web version
• VS Code Marketplace

License

MIT — built by Architonix Labs LLP