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High-performance, privacy-first tools for engineers, creators, and data analysts. Zero sign-up required, zero server logs, and 100% free forever.
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Search across 115+ offline-ready tools. Fast, browser-native, and private.
Interactive Directory
Featured Developer Tools
Word Counter
Count words, characters, sentences, and paragraphs in your text instantly. Get accurate reading time estimates for any content.
Character Counter
Count characters with and without spaces, track letter frequency, and check byte size for any text or string.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, and kebab-case instantly.
Remove Duplicates
Remove duplicate lines from any text instantly. Options for case-sensitive matching, trimming whitespace, and preserving original order.
Text Sorter
Sort lines of text alphabetically (A-Z or Z-A), by line length, numerically, or shuffle them randomly.
Reverse Text
Reverse text character-by-character, word-by-word, or line-by-line. Also flip text upside down with special Unicode characters.
Lorem Ipsum
Generate placeholder Lorem Ipsum text by paragraphs, sentences, or words. Perfect for design mockups and layout testing.
Slug Generator
Convert any title or text into a clean, SEO-friendly URL slug. Handles special characters, accents, and Unicode transliteration.
Curated Directory
Explore Tool Categories
Browse 110+ browser-native utilities neatly classified by operational workflow.
Text Utilities
Manipulate text, convert cases, clean duplicate lines, and analyze word count.
Developer Utilities
Format/minify JSON & XML; decode JWTs; generate cryptographic hashes and UUIDs.
Calculator Utilities
Solve compound interest, loan EMIs, age differences, and financial ratios.
Generator Utilities
Create secure passwords, QR/Barcodes, CSS layouts, and mesh gradients.
Image Utilities
Compress, resize, crop, rotate, flip, convert image formats, and view EXIF data.
Color Utilities
Convert Hex, RGB, HSL, CSS colors, test contrast accessibility, and generate palettes.
Converter Utilities
Encode URLs, parse web links, and minify HTML, CSS, JS, and SQL queries.
Unit Utilities
Convert length, weight, temperature, area, volume, data storage, and energy units.
Built For Developers
Engineered for Speed & Privacy
Why engineers trust QuizOxa Tools over ordinary web converters.
Sub-Millisecond Execution
Zero network roundtrips. All algorithms parse and execute locally in your browser's high-speed JavaScript engine.
Zero Server Footprint
Your keys, tokens, and payloads never leave your machine. No server databases, zero remote logs, and zero tracking.
100% Offline Ready
Application scripts cache directly into browser RAM. Format JSON or decode tokens even when completely disconnected.
Engineering Knowledge
Latest Developer Guides
Mastering CSS Gradients: Linear, Radial, Conic & Mesh Layout Guide (2027)
Master CSS gradients with this complete developer guide. Learn linear, radial, conic, and repeating gradient syntax, color stop math, OKLCH interpolation, smooth transitions, and free online CSS gradient tools.
Mastering CSS Border Radius: 8-Value Syntax, Nested Curves & Squircle Guide (2027)
Master CSS border-radius syntax, 8-point elliptical curves, concentric nested corners math, iOS squircles, organic blob shapes, and free visual generator.
URL Encoder & Decoder Guide: Master Percent-Encoding, RFC 3986 & Web Security (2027)
Master URL encoding & decoding. Learn percent-encoding rules, RFC 3986 reserved chars, encodeURI vs encodeURIComponent, XSS security & free online tools.
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