正则可视化 - Free Online Tool | PivaBox

将正则表达式可视化为语法图——直观查看模式结构

如何使用正则可视化

  1. 在输入框中输入正则表达式，可选带标志（如 g、i、m）
  2. 点击 可视化 在画布上生成铁路语法图
  3. 使用 适应画布 调整缩放级别，或 下载 PNG 将图表保存为图片

Frequently Asked Questions

正则可视化免费吗？

是的，PivaBox 正则可视化完全免费使用，没有限制。

我的正则表达式会离开设备吗？

不会。所有解析和渲染完全在浏览器中进行。你的正则表达式不会离开设备。

支持可视化哪些正则特性？

可视化工具支持字面量、字符类（<code>[a-z]</code>）、量词（<code>* + ? min,max</code>）、分组（<code>(...)</code>）、交替（<code>|</code>）、锚点（<code>^

PivaBox - Free Online Browser Tools

265+ free online tools for image processing, PDF editing, text manipulation, developer utilities, and more. All tools run entirely in your browser — your files never leave your device. Privacy-first, zero server uploads.

Image Tools

  • Image Converter — Convert images between PNG, JPEG, WebP, and AVIF
  • Image Compressor — Compress and resize images with quality control
  • Image Crop — Crop images interactively
  • Image Filter — Apply grayscale, sepia, blur, and more
  • SVG to PNG — Convert SVG vector graphics to PNG
  • Icon Generator — Generate icons from text and emoji
  • Image to Text (OCR) — Extract text from images
  • Color Picker — Pick colors from images
  • Meme Generator — Add captions to images

PDF Tools

  • PDF Image Extractor — Extract images from PDF files
  • PDF Merger — Merge multiple PDFs into one
  • PDF Splitter — Split PDFs into separate pages
  • PDF to Text — Extract text from PDF files
  • PDF Metadata — View PDF document properties

Text Tools

  • Text Diff — Compare two texts side by side
  • Markdown Preview — Write Markdown and preview HTML
  • Case Converter — Convert text case styles
  • Word Counter — Count characters, words, sentences
  • Lorem Ipsum — Generate placeholder text
  • Text Sorter — Sort, deduplicate, reverse, shuffle

Developer Tools

  • JSON Formatter — Format, validate, minify JSON
  • Regex Tester — Test regular expressions in real-time
  • UUID Generator — Generate UUID v4 identifiers
  • Hash Generator — Compute SHA-1, SHA-256, SHA-384, SHA-512
  • JWT Decoder — Decode JWT tokens
  • YAML ↔ JSON — Convert between YAML and JSON
  • Timestamp Converter — Convert Unix timestamps to dates
  • Base64 Encoder/Decoder — Encode/decode Base64
  • URL Encoder/Decoder — Encode/decode URL strings
  • Slug Generator — Convert text to URL slugs
  • Morse Code — Convert text to/from Morse code
  • Color Converter — Convert between HEX, RGB, HSL
  • Base Converter — Convert between binary, octal, decimal, hex
  • HTML Encoder/Decoder — Encode/decode HTML entities
  • JSON ↔ CSV — Convert between JSON and CSV
  • Password Generator — Generate strong passwords
  • CSS Generator — Generate box-shadow and gradient CSS
  • Cron Parser — Parse cron expressions

Other Tools

  • QR Code — Generate and decode QR codes
  • Unit Converter — Convert length, weight, temperature, area
lt;/code>）和转义序列。适用于教育和简单模式。