# MyToolster - Web Developer Tools

> Online developer utilities — all client-side, no data sent to any server.

## Pages

### Home
- [MyToolster](https://mytoolster.com/) — All-in-one online developer tools collection

### AI Detection Tools
- [AI Text Detector](https://mytoolster.com/ai-text-detector) — Browser-based screening for AI-like writing signals. English uses the baseline model, Simplified Chinese uses the current multilingual prototype path, and Traditional Chinese/Japanese are clearly marked experimental signals. Text stays in the browser and is not uploaded.
- [Claude Watermark Remover](https://mytoolster.com/claude-watermark-remover) — Browser-local Layer A cleaner for invisible Unicode and zero-width text markers, including Claude Code text. It reports what it changes and does not claim guaranteed removal of undisclosed statistical watermarks.
- [AI Image Detector](https://mytoolster.com/ai-image-detector) — Browser-based screening for whether an image is more consistent with AI-generated or real-image examples. Visual analysis and available metadata are shown separately; images stay on the device and are not uploaded.
- [Free AI Background Remover](https://mytoolster.com/ai-background-remover) — Remove image backgrounds locally in the browser and download transparent PNGs. No upload, server, or API key required.

These detectors provide model signals for initial review, not proof of authorship or image origin. Public model sources and implementation details are linked from each tool page.

### Audio & Video Tools
- [Offline Audio to Text](https://mytoolster.com/audio-to-text) — 100% in-browser offline speech recognition powered by OpenAI Whisper and WebGPU. Transcribes MP3, M4A, WAV audio with zero data upload. Exports TXT, SRT, VTT, Word, and Markdown.
- [Free Video to Text Converter](https://mytoolster.com/video-to-text) — Extract subtitles and transcribe large MP4, MOV, WebM videos directly in your browser using local GPU acceleration. No video upload, zero bandwidth cost, exports editor-ready SRT and VTT subtitles.
- [Free Video to SRT Converter](https://mytoolster.com/video-to-srt) — In-browser AI subtitle generator powered by OpenAI Whisper and WebGPU. Generates millisecond-accurate SRT & VTT subtitles for MP4, MOV, and WebM videos with instant download for Premiere Pro, CapCut, and DaVinci Resolve.

### Text Tools
- [Unicode Tool](https://mytoolster.com/unicode) — Unicode character lookup and converter
- [UTF-8 Encoder](https://mytoolster.com/utf8) — Text to UTF-8 bytes encoding and decoding
- [Base64 Encoder](https://mytoolster.com/base64) — Base64 encode and decode
- [URL Encoder](https://mytoolster.com/urlencode) — URL encoding and decoding
- [MD5 Hash](https://mytoolster.com/md5) — MD5 hash generator
- [Encoding Converter](https://mytoolster.com/encoding-converter) — Character encoding converter

### Data Tools
- [JSON Formatter](https://mytoolster.com/jsonformat) — JSON format, validate, minify
- [BBCode Viewer](https://mytoolster.com/bbcode-viewer) — Browser-local BBCode preview and safe HTML conversion with common forum tags, local file import, copy, and download
- [Hex to Binary Converter](https://mytoolster.com/hex-to-binary) — Browser-local hexadecimal-to-binary conversion for standard, fractional, and long values, with local text-file import, copy, and download
- [XML Viewer](https://mytoolster.com/xml-viewer) — Browser-local XML parser and viewer with XML/JSON views, formatting, minification, local file import, copy, and download
- [URL Parser](https://mytoolster.com/urlparams) — URL parameter parser
- [Text Counter](https://mytoolster.com/toon) — Character and word counter
- [XML Validator](https://mytoolster.com/xml-validator) — XML syntax check, format, minify

### Web Tools
- [Password Generator](https://mytoolster.com/password-generator) — Secure password generator
- [Unix Timestamp](https://mytoolster.com/unixtime) — Unix timestamp converter
- [Change Calculator](https://mytoolster.com/change) — Percentage change calculator
- [Stock Limit-Up and Limit-Down Price Calculator](https://mytoolster.com/stock-limit-price-calculator) — Calculate theoretical upper and lower stock price limits from a reference price and percentage
- [Stock Loss Recovery Calculator](https://mytoolster.com/stock-recovery-calculator) — Calculate the gain needed to recover a stock loss and estimate consecutive limit-up moves
- [UUID Validator](https://mytoolster.com/uuid-validator) — UUID format validation and version detection
- [Random Number Generator](https://mytoolster.com/random-number-generator) — Precision random number generator
- [Pantone to RGB](https://mytoolster.com/pantone-to-rgb) — Pantone PMS to HEX/RGB/HSL/CMYK conversion
- [Pantone RGB Reference Chart](https://mytoolster.com/pantone-color-chart) — Search Pantone color codes and view approximate HEX/RGB/CMYK values with coated and uncoated filters

### Stock Calculation Tools
- [Stock Limit-Up and Limit-Down Price Calculator](https://mytoolster.com/stock-limit-price-calculator) — A browser-only theoretical calculator for upper and lower prices using one percentage rate
- [Stock Loss Recovery Calculator](https://mytoolster.com/stock-recovery-calculator) — Shows loss percentage, recovery percentage, and estimated number of compounded moves needed to return to a reference price

These stock calculators are educational percentage calculators, not exchange-rule engines or investment advice. Actual daily price limits, tick-size rounding, and market-specific rules vary by exchange.

### QR Tools
- [QR Code Reader](https://mytoolster.com/qrcode-reader) — QR code scanner
- [QR Code Generator](https://mytoolster.com/qrcode-generator) — QR code generator
- [WiFi QR Code](https://mytoolster.com/wifi-qrcode) — WiFi QR code generator

### Blog
- [Blog](https://mytoolster.com/blog) — Developer guides and tutorials
- [AI Text Detection Principles in 2026](https://mytoolster.com/blog/ai-text-detection-principles-2026) — Evidence-based explanation of perplexity, classifiers, DetectGPT, watermarks, error sources, and responsible use
- [2026 年 AI 文本检测原理](https://mytoolster.com/zh/blog/ai-text-detection-principles-2026) — 中文版：介绍检测器的统计信号、主要方法、误判原因和证据边界
- [2026 年 AI 文字偵測原理](https://mytoolster.com/tw/blog/ai-text-detection-principles-2026) — 繁體中文版：說明統計訊號、主要方法、誤判原因與證據邊界
- [2026年のAIテキスト検出の原理](https://mytoolster.com/ja/blog/ai-text-detection-principles-2026) — 日本語版：検出手法、誤判定の理由、証拠の限界を解説

### Info
- [About](https://mytoolster.com/about) — About MyToolster
- [Privacy](https://mytoolster.com/privacy) — Privacy policy
- [Terms](https://mytoolster.com/terms) — Terms of service

## Languages
- English (default): no prefix, e.g. /uuid-validator
- 简体中文: /zh prefix, e.g. /zh/uuid-validator
- 繁體中文: /tw prefix, e.g. /tw/uuid-validator
- 日本語: /ja prefix, e.g. /ja/uuid-validator

The AI detection pages are available in all four site languages:
- [AI Text Detector — 简体中文](https://mytoolster.com/zh/ai-text-detector)
- [AI Text Detector — 繁體中文](https://mytoolster.com/tw/ai-text-detector)
- [AI Text Detector — 日本語](https://mytoolster.com/ja/ai-text-detector)
- [AI Image Detector — 简体中文](https://mytoolster.com/zh/ai-image-detector)
- [AI Image Detector — 繁體中文](https://mytoolster.com/tw/ai-image-detector)
- [AI Image Detector — 日本語](https://mytoolster.com/ja/ai-image-detector)

The AI background remover is available in all four site languages:
- [Free AI Background Remover — 简体中文](https://mytoolster.com/zh/ai-background-remover)
- [Free AI Background Remover — 繁體中文](https://mytoolster.com/tw/ai-background-remover)
- [Free AI Background Remover — 日本語](https://mytoolster.com/ja/ai-background-remover)

The audio to text tool is available in all four site languages:
- [Offline Audio to Text — 简体中文](https://mytoolster.com/zh/audio-to-text)
- [Offline Audio to Text — 繁體中文](https://mytoolster.com/tw/audio-to-text)
- [Offline Audio to Text — 日本語](https://mytoolster.com/ja/audio-to-text)

The video to text converter is available in all four site languages:
- [Free Video to Text Converter — 简体中文](https://mytoolster.com/zh/video-to-text)
- [Free Video to Text Converter — 繁體中文](https://mytoolster.com/tw/video-to-text)
- [Free Video to Text Converter — 日本語](https://mytoolster.com/ja/video-to-text)

The video to SRT subtitle generator is available in all four site languages:
- [Free Video to SRT Converter — 简体中文](https://mytoolster.com/zh/video-to-srt)
- [Free Video to SRT Converter — 繁體中文](https://mytoolster.com/tw/video-to-srt)
- [Free Video to SRT Converter — 日本語](https://mytoolster.com/ja/video-to-srt)

The stock calculation pages are available in all four site languages:
- [Stock Limit-Up and Limit-Down Price Calculator — 简体中文](https://mytoolster.com/zh/stock-limit-price-calculator)
- [Stock Limit-Up and Limit-Down Price Calculator — 繁體中文](https://mytoolster.com/tw/stock-limit-price-calculator)
- [Stock Limit-Up and Limit-Down Price Calculator — 日本語](https://mytoolster.com/ja/stock-limit-price-calculator)
- [Stock Loss Recovery Calculator — 简体中文](https://mytoolster.com/zh/stock-recovery-calculator)
- [Stock Loss Recovery Calculator — 繁體中文](https://mytoolster.com/tw/stock-recovery-calculator)
- [Stock Loss Recovery Calculator — 日本語](https://mytoolster.com/ja/stock-recovery-calculator)