High-Precision Web Utilities.
A fast, private suite of client-side tools for engineers, designers, and creators. All processing runs locally inside your browser memory with zero server uploads.
LLM Token Counter & Cost Matrix
Estimate BPE tokens and compare live API spend across GPT-4o, Claude 3.5 Sonnet, Gemini 1.5, and DeepSeek with a colorized chunk visualizer.
WebP & PNG Converter
Batch convert JPG, PNG, and WebP assets with lossless and lossy quality compression directly via browser Canvas.
Custom QR Code Studio
Generate high-resolution static QR codes for URLs, WiFi credentials, and text with custom color palettes and PNG export.
JSON Formatter & Validator
Clean, format, validate, and minify nested JSON strings with real-time error detection and one-click clipboard copying.
JSON to TypeScript & Zod Studio
Transform raw JSON payloads into strict TypeScript interfaces, type aliases, and runtime Zod validation schemas instantly.
Base64 Studio (Text & Files)
Bidirectional UTF-8 text encoder/decoder and binary file converter for creating inline HTML/CSS Data URIs.
Word Counter & Density
Real-time word, character, sentence, and paragraph counts with estimated reading duration and SEO keyword density breakdown.
CSS Box Shadow & Glow
Interactive multi-layer elevation, blur, spread, and glassmorphism generator with real-time CSS/Tailwind code output.
Indie Launch & Directory Kit
Launchpad with 35+ verified free startup directories, Hacker News, Reddit, and Product Hunt copy generators, and progress tracking.
Architectural Principles
ToolsDeck is engineered to solve a common developer headache: heavy, slow online converters packed with intrusive advertisements and opaque server tracking.
1. Complete Client-Side Isolation
All image conversions, encoding calculations, JSON transformations, and text parsing occur directly inside your browser's local V8 JavaScript runtime using HTML5 Web APIs (Canvas, FileReader, and TextEncoder). Zero bytes of your sensitive data or images ever leave your device.
2. Zero Latency Execution
Because there is no network round-trip latency to a backend server, all operations finish virtually instantaneously, even for multi-megabyte payloads and batch asset queues.
3. High-DPI & Privacy Guarantees
No cookies are used for tracking, no telemetry beacons are dispatched, and no user registration is required. Everything remains private to your current browser session.