cv.cm
Browser tools plus a tiny cloud clipboard.
图片工具在浏览器里运行，文件不上传。云剪切板把文字存进 Cloudflare D1，查看 10 次或超过 1 天自动删除，无需登录。
Tools
- Cloud clipboard / 云剪切板 — text, images, video, files. Markdown / HTML / code. Gone after 10 views or 1 day. Open
- ID Watermark & Redact / 身份证水印打码 — tile a for-use-only line with the date on ID copies, text or logo, batch export, ZIP. Open · 中文
- ID Watermark & Redact: mosaic / 图片打马赛克 — drag boxes to pixelate faces or black out ID numbers, plates, QR codes. Open · 中文
- Remove background / AI 抠图 — people, products, pets to transparent PNG, batch ZIP. AI runs in the browser. Open · 中文
- AI image upscaler / AI 图片放大 — 2× / 4×, photo or anime. Open
- Speech to text / 语音转文字 — Whisper in the browser, 99 languages, SRT / VTT. Open
- Depth map generator / 深度图生成. Open
- Photo collage / 图片拼图 — combine photos with layouts. Open
- Portrait camera sim / 人像相机模拟 — aperture, shutter, ISO, lenses and filters on photoreal adult sitters. Open
- Image formats / 图片格式 — PNG, JPG, WebP, AVIF, GIF, BMP, ICO. Open
- Images to PDF / 图片转 PDF. Open
- Audio to WAV / 音频转 WAV. Open
- Audio cutter / 音频剪辑. Open
- Audio joiner / 音频拼接. Open
- Text & data / 文本与数据 — JSON, CSV, Base64, Markdown. Open
- XML to JSON / XML JSON. Open
- YAML to JSON / YAML JSON. Open
- Hash generator / 哈希. Open
- Case converter / 大小写. Open
- JWT decoder / JWT. Open
- Percentage calculator / 百分比. Open
- Random number / 随机数. Open
- HTML encode / HTML 转义. Open
- Cron / Cron 表达式. Open
- Slug / URL 别名. Open
- Age calculator / 年龄. Open
- BMI calculator / BMI. Open
- Binary converter / 二进制. Open
- Tip calculator / 小费. Open
- Morse code / 摩尔斯. Open
- Roman numerals / 罗马数字. Open
- Discount calculator / 折扣. Open
- Countdown / 倒计时. Open
- Loan calculator / 贷款. Open
- Stopwatch / 秒表. Open
- Compound interest / 复利. Open
- VAT calculator / 增值税. Open
- Reverse text / 倒序. Open
- URL encode / URL 编码. Open
- Text to hex / 十六进制. Open
- JSON formatter / JSON 格式化. Open
- Base64 / Base64. Open
- Days between dates / 日期间隔. Open
- Sort lines / 排序去重. Open
- Find and replace / 查找替换. Open
- Number to words / 数字转英文. Open
- Add days to a date / 日期加减. Open
- Week number / 周数. Open
- Aspect ratio / 宽高比. Open
- Business days / 工作日. Open
- Fraction calculator / 分数计算. Open
- Hourly to yearly / 时薪换年薪. Open
- Profit margin / 利润率. Open
- Base converter / 进制转换. Open
- Time duration / 时长计算. Open
- TDEE calculator / TDEE 热量计算 — BMR and daily calories, metric or imperial. Open
- Subnet calculator / 子网计算器 — IPv4 CIDR, mask, host range, range to CIDR. Open
- Chmod calculator / chmod 权限计算 — octal ↔ rwx, setuid / setgid / sticky. Open
- Typing speed test / 打字速度测试 — net WPM, or characters per minute for CJK. Open
- Dice roller / 骰子与抛硬币. Open
- GPA calculator / GPA 计算器. Open
- Pomodoro timer / 番茄钟. Open
- Sleep calculator / 睡眠计算器 — bedtime or wake-up time by 90-minute cycles. Open
- Body fat calculator / 体脂率计算 — U.S. Navy tape method. Open
- Contrast checker / 颜色对比度检查 — WCAG AA / AAA. Open
- Pace calculator / 跑步配速计算 — pace, time, distance, race predictions. Open
- Final grade calculator / 期末成绩计算 — the final score you need. Open
- Due date calculator / 预产期计算 — Naegele's rule with cycle length. Open
- Ideal weight calculator / 理想体重计算 — Devine, Robinson, Miller, Hamwi. Open
- Water intake calculator / 每日饮水量 — by weight, exercise and climate. Open
- Fuel cost calculator / 油费计算 — trip cost from distance, economy and price. Open
- Reading time calculator / 阅读时长估算 — reading and speaking time. Open
- Time card calculator / 工时计算 — weekly hours, breaks, overtime and pay. Open
- Electricity cost calculator / 电费计算 — appliance kWh and cost. Open
- Ovulation calculator / 排卵期计算 — fertile window for the next cycles. Open
- Macro calculator / 宏量营养素计算 — protein, fat and carbs in grams. Open
- Calories burned calculator / 运动消耗热量 — by activity, weight and minutes. Open
- QR code / 二维码 — text or URL to PNG, on-device. Open
- Barcode generator / 条码生成 — Code 128, Code 39, EAN-13. Open
- Password generator / 密码生成. Open
- Word counter / 字数统计. Open
- Resize / compress / 缩放压缩. Open
- Crop / 裁剪. Open
- Rotate image / 旋转图片. Open
- EXIF remover / 清除照片信息. Open
- Meme generator / 表情包. Open
- Signature generator / 签名. Open
- Favicon generator / Favicon. Open
- Screenshot editor / 截图标注. Open
- Image color palette / 图片取色 — main colors of a photo as HEX, no upload. Open
- Color picker / 取色器. Open
- Hex to RGB / 颜色转换. Open
- PDF to JPG / PDF 转图片. Open
- Merge PDF / 合并 PDF. Open
- Compress PDF / 压缩 PDF. Open
- Split PDF / 拆分 PDF. Open
- Invoice generator / 发票 PDF. Open
- Name generator / 名字与用户名. Open
- Time zone converter / 时区转换. Open
- Timestamp converter / 时间戳. Open
- Lorem ipsum / 占位文本. Open
- Unit converter / 单位换算. Open
- Text to speech / 文字转语音. Open
- Diff checker / 文本对比. Open
- UUID generator / UUID. Open
- Regex tester / 正则测试. Open
Device
What this browser reports, read in the tab. Screen size, browser, and user agent show immediately. The IP address of the request appears only after a click and is not stored. No city lookup.
Games
Retro emulator games in the browser, grouped by console and genre. Cheats (金手指), a short walkthrough, and FAQ on every game page. Play uses EmulatorJS cores on S3. Shiru freeware (Alter Ego, Lawn Mower) starts immediately. Commercial dumps are not hosted — load a ROM you already have; it stays in this tab.
Lessons
Illustrated how-tos that finish in the browser: QR and barcode, merge / compress / split PDF, image conversion, crop, rotate, resize, watermark, strip EXIF, MP3 to WAV, join audio, favicon, signature PNG, screenshot marks, invoice PDF, a strong password, JSON formatting, Base64, Unix time, reading a JWT, business days, fractions, hourly pay, time zones, profit margin, number bases, durations, percentages, day counts, date shifts, ISO weeks, and VAT. Each lesson is a complete job with diagrams, a tool link when the file work starts, and a check at the end. Copy ships in all eight locales.
Older photography, court, pool and interpersonal lesson URLs still parse, then 301 to the hub.
Languages: English, 简体中文, 繁體中文, 日本語, 한국어, Tiếng Việt, Bahasa Indonesia, Español. The list starts with English; the page still follows the browser language.
Develop
npm install
npm test
npm run dev
Open http://localhost:5173/ — the client picks a language from the browser and sends you to /{locale}/.
Clipboard API calls need the Worker + D1 (npm run deploy or npx wrangler pages dev dist).
Deploy
npm run build
npx wrangler d1 migrations apply cvcm --remote
npm run deploy
Production: https://cv.cm
