🧹 清理与格式化 12Remove unwanted characters, extra spaces, line breaks, HTML tags, and punctuation from your text. Clean, format, and organize content with free browser-based tools that keep your data private.
Aa 大小写转换 3Switch between uppercase, lowercase, title case, sentence case, and toggle case instantly. Convert text letter casing without retyping — all in your browser.
↕ 排序与文本行 6Sort lines alphabetically, numerically, or by length. Reverse, shuffle, number lines, add prefixes or suffixes — powerful line manipulation tools, all client-side.
🔍 查找与替换 10Search and replace text patterns, extract emails, URLs, and phone numbers from documents. Find duplicates, compare lists, and count occurrences — all in your browser.
# 计数与分析 9Count words, characters, sentences, paragraphs, and analyze text density. Get reading time estimates, keyword density reports, and detailed text statistics — no uploads needed.
✨ 文本转换 27Reverse text, repeat strings, stylize with Unicode, convert to upside-down, cursive, old English, or NATO alphabet. Over 25 text transformation tools running entirely in your browser.
🔐 编码与加密 23Encode and decode Base64, URL, HTML entities, hashes, and ciphers. Generate UUIDs, JWTs, HMACs, and cryptographic hashes — all computed locally with no server round-trips.
⚡ 生成器 74Generate Lorem Ipsum, passwords, random numbers, UUIDs, QR codes, barcodes, and more. Create placeholder content, secure credentials, and visual codes — instant, free, browser-based.
</> 开发者工具 128Format and validate JSON, decode JWTs, diff text, edit HTML, convert CSV↔JSON, test regex, and more. Essential developer utilities that run 100% client-side — no data leaves your machine.
🧮 计算器与转换器 76Calculate age, BMI, loans, percentages, and more. Convert between thousands of units across length, weight, temperature, and beyond. Free instant calculators — no signup, all in your browser.
🖼 图像工具 74Resize, compress, crop, rotate, and convert images between formats. Add watermarks, apply filters, generate placeholders, and optimize for web — all processed locally in your browser.
📄 PDF 工具 52Merge, split, rotate, compress, and convert PDFs. Add watermarks, page numbers, signatures, and metadata — all processed client-side with no file uploads to any server.
📊 CSV 工具 11View, filter, sort, deduplicate, and analyze CSV data. Convert between CSV, JSON, and Excel formats. Extract columns, compute statistics — all in your browser with complete privacy.
📝 办公文档工具 25Convert Word, Excel, and PowerPoint files. DOCX to PDF, XLSX to CSV, PPTX to text, and more. All office document conversions happen locally — your files never leave your device.
📱 移动应用资源 7Generate iOS, Android, and Play Store app icons, mobile wallpapers, and Open Graph social share images from a single source image. Perfect for developers and marketers.
🎵 音频工具 17Trim, fade, normalize, reverse, and pitch-shift audio files entirely in your browser via the Web Audio API. No uploads required — all audio processing is done client-side.
🎥 视频工具 10Compress, trim, mute, convert, and watermark video files directly in your browser. Extract metadata, convert to GIF — all video processing is done locally with zero server uploads.
🔄 单位换算器 798Convert between thousands of measurement units across length, area, volume, weight, temperature, speed, time, data, force, pressure, energy, power, and angle — all instantly in your browser.
🌐 网络与域名工具 16Perform DNS lookups, WHOIS queries, ping tests, HTTP header checks, SSL certificate verification, and IP address lookups. Essential network diagnostic tools — all browser-based and free.
🏗️ 建筑计算器 30Calculate concrete volume, brick counts, paint coverage, roofing materials, lumber requirements, and flooring dimensions. Essential calculators for builders, contractors, and DIY home renovators.
⚡ 电力计算器 12Apply Ohm's Law, calculate electricity costs, size single and three-phase power systems, estimate battery run time, and convert electrical units. Free tools for electricians, engineers, and students.
📈 数据分析 3Perform statistical analysis, frequency distribution, and create editable data tables directly in your browser. Explore and analyze datasets with powerful yet simple tools — no uploads required.
• 社交媒体工具 13Download Instagram profile photos, extract social media links, analyze social URLs, and generate carousel previews. Handy social media utilities — all free and running in your browser.
• API 工具 8Test REST APIs, explore GraphQL endpoints, debug WebSocket connections, and format API responses. Essential tools for API development and testing — all running client-side.
• 数据库工具 7Format SQL queries, design database schemas, generate ERD diagrams, and convert between SQL dialects. Database development utilities that work entirely in your browser.
• DevOps 工具 7Build Docker Compose files, generate Kubernetes YAML, create GitHub Actions workflows, and write Terraform snippets. Infrastructure-as-code tools for modern DevOps workflows.
• 无障碍工具 7Check color contrast ratios, simulate color blindness, validate ARIA labels, and audit focus order. Essential WCAG compliance and web accessibility testing tools — all free and browser-based.
• 隐私与安全工具 8Generate Content Security Policies, security.txt files, CSRF tokens, and SRI hashes. Build cookie consent banners and privacy policies. Keep your websites secure and compliant.
• Markdown 工具 5Convert Markdown to HTML, PDF, and slides. Format, lint, and preview Markdown content. Generate README files and changelogs — all in your browser with instant preview.
• 正则表达式工具 8Test, debug, visualize, and generate regular expressions. Build regex patterns visually, explain complex expressions in plain English, and batch-test against sample data — all browser-based.
• 游戏 10Fun browser-based mini-games for kids and adults. Play memory match, dino runner, dice roller, counting caterpillar, kids piano, and more — all free, no downloads, no ads in the game area.
• 文本工具 19Count words and characters, convert case, sort lines, find and replace text, and manipulate strings. All essential text manipulation utilities — free, private, and running in your browser.
• 扫描仪工具 4Scan QR codes and barcodes in real-time using your device camera. Digitally scan documents with edge detection and perspective correction — all processing done locally in your browser.
• 数学 1Solve mathematical problems, debug spreadsheet formulas, and perform calculations. Free online math utilities that work entirely in your browser — no downloads or sign-ups required.