免费浏览器工具

MX 记录校验器

检查有效的邮件交换记录

SPF/DKIM/DMARC 解析器

解析邮件认证记录

SPF 记录构建器

构建 SPF 记录并统计 DNS 查询次数

DMARC 记录构建器

生成 DMARC 策略与报告记录

邮件头分析器

追踪投递跳转与认证结果

一次性邮箱识别

对照已知一次性邮箱域名

邮箱清洗器

批量清洗、校验与去重邮箱

security.txt 审计器

按 RFC 9116 校验 security.txt

密码泄露检查

用 k-匿名方式对照 HIBP 检查密码

CSP 与安全头生成器

构建 Content-Security-Policy 与安全头组合

WordPress 盐值生成器

生成 wp-config 密钥与盐值

WordPress 加固生成器

wp-config.php 与 .htaccess 代码片段

chmod 权限计算器

转换八进制模式与 rwx 权限

JWT 解析器

解析 JWT 头部、声明与过期时间

哈希生成器

MD5、SHA-1、SHA-256 与 SHA-512 摘要

llm.txt 合规检查器

校验 AI 抓取器说明

robots.txt 规则解析器

测试任意 user-agent 的 URL 访问规则

站点地图 XML 可视化

解析站点地图、筛选、搜索并导出 CSV

Meta 标签分析器

分析标题、meta 与 OpenGraph 标签

SERP 预览生成器

预览 Google 搜索结果：桌面 + 移动端

社交卡片预览

OG 卡片预览与 1200x630 图片生成器

Schema 标记生成器

构建并校验 JSON-LD 结构化数据

robots.txt 与 llms.txt 生成器

生成 robots、llms 与 security 文件

CIDR 与子网计算器

IPv4 与 IPv6 网络范围与掩码

HTTP 状态码参考

40 多种状态码的交互式参考

客户端端口扫描器

检测 localhost 上的开放端口

浏览器网络能力测试

在线状态、连接类型与下行速度估算

浏览器内图片分类

MobileNet v2 分类，无需上传

客户端嵌入搜索

使用 Transformers.js 的语义搜索

浏览器内 LLM 运行器

在本地运行 DistilGPT-2 文本生成

浏览器内 OCR

使用 Tesseract.js 从图片提取文本

背景移除

使用设备端分割移除照片背景

图片放大

将图片放大 2 倍或 3 倍并锐化

语音转文字

使用 Whisper tiny 在本地转写音频

范围估算器

30 秒评估您的管理需求

密码生成器

本地生成的强密码

图片转换与压缩

调整尺寸并转换为 WebP、AVIF 或 JPEG

Base64、URL 与 HTML 编码器

在本地编码与解码文本

Crontab 生成器与解析

构建与解析 cron 计划

Ping & Latency Visualizer

Graph live latency and network stability in your browser.

Subnet & CIDR Calculator

Compute network, broadcast, range and host count for any IPv4 CIDR.

HAR (HTTP Archive) Viewer

Parse .har files locally to inspect load times and payloads.

Client-Side Password Vault & Generator

Generate strong passwords and encrypt a credential list locally with a master password.

SSL/TLS Certificate Decoder

Decode a PEM certificate to inspect its size and SHA-256 fingerprint.

Keyword Density & Content Analyzer

Count words, reading time and top keyword phrases.

Structured Data (Schema.org) Validator

Validate JSON-LD schema syntax locally.

Redirect / Regex Path Mapper

Test URL rewrite rules and regex mappings in real time.

Log Parser & Anonymizer

Parse server logs, filter by level, anonymize IPs/emails.

CSV to JSON/XML Converter

Parse CSV and export JSON, XML or SQL inserts.

Base64 Image Encoder/Decoder

Convert images to Base64 data URIs and back.

WordPress Security Hardening Auditor

Audit a wp-config.php for security settings.

WordPress 盐值生成器

Generate wp-config.php authentication keys and salts.

WP REST API Explorer

Probe a WordPress site's public REST endpoints.

WordPress Version & Theme Finder

Extract WordPress version, theme and plugins from pasted HTML.

Node.js

package.json Security Auditor

Audit a package.json for risky or outdated dependencies.

Node.js

.env Security Validator

Validate .env files for placeholder secrets and missing values.

Node.js

Express.js Route Mapper

Parse Express routing code into a visual endpoint map.

Content Security Policy (CSP) Builder

Build and evaluate a CSP header interactively.

CORS Preflight Simulation Sandbox

Simulate CORS preflight requests and headers.

Local/Session Storage & Cookie Inspector

Inspect everything stored in your browser for this origin.

Framework Bundle Budget Calculator

Estimate load times from bundle sizes across network speeds.

Frontend

Next.js Routing Matrix Parser

Visualize a Next.js app/pages folder tree as routes.

Unix Timestamp & Epoch Converter

Convert between Unix timestamps and human dates.

UUID / ULID Bulk Generator

Generate thousands of UUIDs or ULIDs locally.

Accessibility

Color Contrast Auditor (WCAG)

Test WCAG 2.1 contrast ratios.

Diff Checker & Text Merge

Compare two text blocks line by line.

Base Converter (Binary/Octal/Decimal/Hex/Base64)

Convert numbers between bases.

Cron Expression Explainer

Explain a crontab expression in plain English.

Web Crypto Key Pair Generator

Generate RSA or ECDSA key pairs and export JWK/PEM locally.

Bcrypt / Argon2 Playground

Hash passwords with bcrypt or Argon2id via WebAssembly.

BIP39 Mnemonic Converter

Generate seed phrases and derive BTC/ETH keys offline.

Steganography Encoder / Decoder

Hide and extract text in PNG pixel data locally.

Regex Visualizer & Match Tester

Highlight matches, capture groups, timings and substitutions.

JSON Schema Generator & Validator

Infer JSON Schema from data and validate documents.

SQL Formatter & Syntax Checker

Format SQL with keywords, indentation and balance checks.

Markdown to Live HTML Converter

Render markdown with code, tables and task lists live.

JWT Signature Verifier

Verify RS/PS/ES/HS JWT signatures with a public key locally.

GraphQL Schema Introspector

Parse SDL, browse types and generate query skeletons.

DNS Propagation Emulator

Simulate resolver caches and TTL countdown over 24 hours.

HTTP Header Builder & Auditor

Build raw requests, parse responses, audit security headers.

WebRTC Signaling Playground

Copy-paste SDP to open a direct data channel between tabs.

WebSocket Tester & Frame Logger

Connect to ws/wss endpoints, log frames and measure latency.

Core Web Vitals Predictor

Rate TTFB, LCP, CLS and INP against Google thresholds.

Image Compression Previewer

Compare original vs compressed size and quality side by side.

CSS Selector Performance Analyzer

Rank CSS selectors by rendering cost and flag risky rules.