CodeChef
CTF Encoding & Conversion Tool
CodeChef helps security learners, CTF players, and engineers move through common encodings faster. Detect likely formats, convert instantly, and keep the workflow focused when you need answers under time pressure.
Hello CTF!
Start from the string, not from a long menu.
Designed for decoding, comparison, and quick iteration.
Built for the formats you meet in real security work
Built to fit perfectly within our security tool suite, CodeChef delivers exactly what you need under pressure: fast data transforms, practical format coverage, and absolute offline privacy.
Automatic detection
Quickly infer likely encodings such as Base64, Hex, URL-safe text, and other common challenge formats.
One-step conversion
Move from encoded payloads to readable content without context switching across multiple utilities.
CTF-friendly coverage
Useful for capture-the-flag puzzles, payload inspection, puzzle solving, and general security learning.
Multiple platforms
Available across Apple devices so the same workflow is ready on phone, tablet, desktop, and Vision Pro.
Offline by default
Conversions stay local on device, which fits privacy-sensitive analysis and avoids unnecessary network dependency.
Practical for study
Helpful for understanding encoding behavior, testing assumptions, and building intuition for common challenge patterns.
Try instant transforms in the browser
Use the mini demo below to preview the sort of quick conversions CodeChef is optimized for.
Common transforms in one place
Readable encodings
Payload-safe formats
Low-level representations
Challenge-friendly transforms
Quick facts and fit
Built for Apple devices
Use the same lightweight conversion workflow across iPhone, iPad, Mac, and Apple Vision Pro.
Modern OS support
Requires iOS 16.5+, iPadOS 16.5+, macOS 13.4+, or visionOS 1.0+.
Multi-language interface
Supports English, Japanese, Korean, and Simplified Chinese.
Fast utility for learning and analysis
Best suited for CTF solving, decoding suspicious strings, and day-to-day encoding inspection.