Complete Overview of the 12 WebUtils Browser Utilities
Modern web development, technical search engine optimization, and multi-platform digital publishing require dozens of micro-tasks every single day. Whether you are auditing a design system for perceptual contrast, forecasting monthly token expenditure across frontier Large Language Models, debugging a complex regular expression, or validating structured data before a production launch, context-switching between bloated SaaS dashboards slows down engineering velocity. WebUtils consolidates twelve essential workflows into a unified, zero-dependency static platform:
| Utility Name | Category | Core Standard / Engine | Export & Output Formats |
|---|---|---|---|
| APCA Color Contrast Checker | Design / Accessibility | APCA-W3 0.1.9 & WCAG 2.2 | CSS Vars, SCSS, Tailwind, JSON |
| LLM Token Cost Calculator | AI / Engineering | 23+ Frontier Model Matrix | Multi-Currency Table, Chart, CSV |
| Video Safe Zone Checker | Video / Social | HTML5 2D Canvas (1080 x 1920) | Composited 9:16 PNG Frame |
| Schema.org JSON-LD Generator | SEO / Structured Data | Schema.org Vocabulary (17 Types) | HTML Script Tag, .jsonld File |
| Multilingual Lorem Ipsum | Content / Localization | 10 Languages (LTR, RTL, CJK) | Plain Text, HTML, Markdown, JSON |
| Text Case & Identifier Converter | Text / Dev Formatting | 15 Unicode-Aware Case Styles | Converted Text, Line Wrapper, .txt |
| Open Graph & Meta Tag Generator | SEO / Social Sharing | Open Graph Protocol & X Cards | HTML Head Block, Live SERP Preview |
| JSON Formatter & TS Converter | Code / Data Engineering | RFC 8259 & RFC 4180 Parser | Prettified JSON, Minified, TS, CSV |
| Regex Tester & Debugger | Code / Pattern Matching | ECMAScript RegExp Engine | Match Groups, Replaced Text, .txt |
| CSS Gradient & Glass Studio | Design / Modern UI | CSS3 Gradients & Backdrop Filter | Cross-Browser CSS Stylesheet |
| SHA Hash, UUID & Password Gen | Security / Cryptography | W3C Web Crypto API (SubtleCrypto) | SHA-1/256/384/512, UUID v4, Passwords |
| Base64, JWT & URL/HTML Encoder | Security / Web Encoding | RFC 4648, RFC 7519 & UTF-8 | Decoded JWT JSON, Base64, URI, HTML |
Engineered for Core Web Vitals, Accessibility, and Technical SEO
Every utility on WebUtils is pre-rendered as clean, semantic HTML paired with lightweight ES modules. Unlike single-page JavaScript frameworks that ship megabytes of hydration bundles, WebUtils requires zero external runtime dependencies. Pages load instantaneously with zero Cumulative Layout Shift (CLS), deterministic First Contentful Paint (FCP), and strict Content-Security-Policy (CSP) headers.
Frequently Asked Questions
Are my inputs or files ever uploaded to a server?
No. Every tool on WebUtils executes 100% locally inside your browser using native JavaScript, HTML5 Canvas, and the W3C Web Crypto API. Your prompts, images, JSON payloads, and tokens never leave your device.
Can I use WebUtils outputs in commercial client and enterprise projects?
Yes. All generated code snippets, JSON-LD schemas, CSS stylesheets, color tokens, and exported PNG/CSV files are completely free to use in personal, open-source, and commercial production environments.
How do I switch between dark mode and light mode?
Click the theme toggle icon button in the top header bar. Your preference is remembered locally in your browser and respects your operating system color scheme by default.
How can I quickly jump between tools using my keyboard?
Press Command+K (macOS) or Ctrl+K (Windows/Linux) anywhere on the site to open the instant Quick Tool Launcher, filter by keyword, and navigate without touching your mouse.