The Fastest, Most Private
Web Utilities Suite: OrvoKit
OrvoKit is an all-in-one suite of free, high-performance web utilities accessible on any browser without signups or software installations. Built on a privacy-first architecture, your files and confidential inputs are never uploaded to any remote server.
100% Client-Side Instant Computation
Calculations, text parsing, image compression, and cryptographic hashes execute directly inside your browser engine (V8, Web Crypto API, Web Workers, and HTML5 Canvas). Zero network latency ensures instantaneous results.
Absolute Privacy & Zero Data Collection
Sensitive financial figures, passwords, proprietary code, and uploaded images are never transmitted to any external backend or database. Data resides purely in transient device RAM and disappears the instant you close the tab.
Dual-Engine Architecture & Multi-Currency
Engineered with dual engines that adapt to regional legislation, tax codes, and utilities. Seamlessly toggle between Korean standard rates and global benchmarks (US, UK, EU, Australia, Japan) across major currencies (USD, EUR, GBP, JPY, KRW) and unit systems.
16 Comprehensive Categories & 302+ Tools
Organized across 16 major disciplines including Finance, Development, Text, SEO, Image, Design, Converters, Math, Health, and Security. Find any tool in under one second with the built-in Command Palette (Ctrl + K).
Explore Our 16 Major Categories
From quick daily checks to advanced engineering and marketing calculations, discover specialized utilities tailored to your workflow.
Finance & Tax
Compound interest, loan amortization, investment analysis, and tax calculators for smarter financial decisions
Business & Marketing
ROAS, ROI, margin calculation, SaaS metrics, and freelance rate tools for business operators
Developer & Data
JSON formatter, Base64 encoder, regex tester, SQL beautifier, and developer utilities
Text & Writing
Character counter, case converter, markdown editor, and text cleaning utilities
SEO & Webmaster
SERP preview, keyword density, UTM builder, and robots.txt tools for SEO professionals
Image & Graphics
Image compression, format conversion, resizing, filters, watermarks, and EXIF remover
PDF & Documents
Printable PDF maker, digital signature pad, Markdown/HTML conversion, table tools, and document utilities
Audio & Media
Voice recorder, metronome, tone generator, white noise mixer, subtitle converter, and media utilities
Design & CSS
Color converter, CSS gradient, box shadow, cubic-bezier, and Tailwind palette generators
Unit Converters
Length, area, temperature, fuel, data storage, number base, and culinary unit converters
Math & Science
Percentage calculator, equation solver, and engineering & scientific computing tools
Health & Fitness
BMI, BMR, TDEE, calorie & macro calculator, hydration, and sleep cycle tools
Date & Time
D-Day countdown, world time planner, Unix timestamp converter, Pomodoro timer, and stopwatch
Generators & Random
Password, QR code, UUID, barcode, and random picker generators
Security & Hardware
Chmod permissions, subnet mask, hash generator, card validator, and hardware diagnostic tools
Lifestyle & DIY
GPA converter, electricity bill, typing speed, and everyday lifestyle utility tools
Engineering Principles & E-E-A-T Quality Standards
Verified algorithms, official benchmarks, and open web transparency
Calibrated against official government data, statutory social insurance formulas, and updated AI foundation model token pricing from OpenAI, Anthropic, and Google.
Implements IEEE 754 floating-point correction, NIST cryptographic standards (SHA-256), and W3C web specifications to guarantee mission-critical reliability.
Backed by zero-server-cost client runtime architecture, every utility on OrvoKit remains 100% free forever without subscriptions or paywalls.
Ready to Boost Your Productivity?
From quick text utilities to advanced developer formatters and financial calculators, OrvoKit is here for you.