AI / Tool
Bilingual Tone Checker雙語語氣檢查器
Paste a message, see how warm, formal, or direct it reads.貼上訊息,看看語氣偏暖、正式還是直接。
kbwen Lab
33 browser tools for quant math, dev tasks, Taiwan formats, and the occasional game.
The ones people come back to most. Updated based on usage.
AI / Tool
Paste a message, see how warm, formal, or direct it reads.貼上訊息,看看語氣偏暖、正式還是直接。
Quant / Calculator
Model compound growth or reverse-calculate CAGR.模擬複利成長,或反推年化報酬率。
Dev / Json
Pretty-print, minify, or validate JSON with error location hints.格式化、壓縮或驗證 JSON,並快速看到錯誤位置提示。
Games / Board Game
Play gomoku against AI with live threat visualization that teaches you board patterns as you play.與 AI 對弈五子棋,即時威脅視覺化幫助你學習棋型。
Local / Taiwan
驗證身分證字號格式與檢查碼,解碼地區和性別。Check Taiwan national ID format, checksum, and prefix.
Design / Tool
HEX、RGB、HSL 即時互轉,附 WCAG 對比比例與最近 CSS 顏色名稱,純瀏覽器運算。Convert between HEX, RGB, and HSL live — with WCAG contrast ratios and nearest CSS color name.
Text / Tool
Count characters, words, and reading time as you type.輸入時即時計算字元、字數與閱讀時間。
Time / Tool
批次貼入時間戳記,一次轉換為可讀日期,附相對時間欄與時間分布圖。Paste a list of timestamps and convert them all at once, with relative time and a timeline view.
Learn / Education
根據遺忘曲線科學安排複習,搭配發音與例句,每天 5 分鐘記住英文單字。Learn English vocabulary using Ebbinghaus forgetting curve spaced repetition. 5 minutes a day with pronunciation and example sentences.
Pick a lane and see what’s inside.選一個方向,看看裡面有什麼。
Category類別 1 tool1 個工具
Tone checks, prompt helpers, bilingual writing aids.語氣檢查、提示詞輔助、雙語寫作工具。
Category類別 3 tools3 個工具
Compound interest, Kelly criterion, and DCA calculators.複利計算、凱利公式、定期定額計算器。
Category類別 8 tools8 個工具
JSON, Base64, HTML entities, markdown, character counts.JSON、Base64、HTML 實體、Markdown、字元計數。
Category類別 7 tools7 個工具
Word puzzles, number merge, arcade — no install needed.文字拼圖、數字合併、街機遊戲 — 免安裝。
Category類別 4 tools4 個工具
Taiwan ID, invoice, year converters, and everyday local tools.身分證、統編驗證、民國年轉換等在地實用工具。
Category類別 2 tools2 個工具
Color converters, aspect ratios, gradients, and visual helpers.色碼轉換、長寬比、漸層、視覺輔助工具。
Category類別 2 tools2 個工具
Character counts, markdown cleanup, case conversion.字元計數、Markdown 清理、大小寫轉換。
Category類別 2 tools2 個工具
Timestamps, timezones, countdowns, and date math.時間戳轉換、時區、倒數計時、日期計算。
Category類別 4 tools4 個工具
Vocabulary drills, algorithm visualizers, and interactive learning.單字練習、演算法視覺化、互動式學習。
kbwen Lab is a collection of free, lightweight browser tools for quant math, developer tasks, Taiwan-specific formats, and casual games. All tools run entirely in your browser with no sign-up required.kbwen Lab 是一系列免費的輕量瀏覽器工具,涵蓋量化數學、開發者任務、台灣格式工具和休閒遊戲。所有工具完全在瀏覽器中運行,無需註冊。
Yes. Every tool on kbwen Lab is free to use with no account needed.是的。kbwen Lab 上的所有工具都免費使用,不需要帳號。
All tools run locally in your browser. Your data never leaves your device unless a tool explicitly states otherwise.所有工具在您的瀏覽器本地運行。除非工具明確說明,否則您的資料不會離開您的裝置。
No. All tools work instantly in your browser — no sign-up, no login, no installation.不用。所有工具在瀏覽器中即時運作,不需要註冊、登入或安裝。
kbwen Lab covers nine categories: AI, quant, dev, games, local, design, text, time, and learning tools.kbwen Lab 涵蓋九個類別:AI、量化、開發、遊戲、在地、設計、文字、時間和學習工具。
Yes. All tools are responsive and work on mobile browsers. No app download is needed.可以。所有工具都支援響應式設計,在手機瀏覽器上即可使用,不需要下載應用程式。