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Ideal for data transmission, API development, image embedding and more.","Base64 Encode","Base64 Decode","Input Text","Enter text to encode...","Encoded Result","Base64 encoded result will be displayed here...","Base64 Encoded Text","Enter Base64 string to decode...","Decoded Result","Decoded text will be displayed here...","Copy","Clear All","Swap Content","Invalid Base64 string, please check your input","Does Base64 support Chinese and emoji?","Yes. This tool uses TextEncoder\u002FTextDecoder for UTF-8 safe Base64 encoding and decoding, correctly handling Chinese, emoji and other Unicode characters.","Will my data be uploaded to a server?","No. All Base64 encoding and decoding operations are completed entirely in your browser. Your input data is never uploaded to any server, ensuring privacy and security.","What are common use cases for Base64?","Base64 is commonly used for data transmission, API authentication (e.g. Basic Auth), embedding images in HTML\u002FCSS, and storing binary data as text.",{"zh":92,"en":109},[93,97,101,105],{"icon":94,"title":95,"desc":96},"lucide:shield","隐私安全","编解码在浏览器本地完成，数据不离开设备",{"icon":98,"title":99,"desc":100},"lucide:repeat","双向转换","支持 Base64 编码和解码双向操作",{"icon":102,"title":103,"desc":104},"lucide:zap","实时处理","输入即时转换，无需点击按钮",{"icon":106,"title":107,"desc":108},"lucide:copy","一键复制","转换结果可一键复制到剪贴板",[110,113,116,119],{"icon":94,"title":111,"desc":112},"Privacy Safe","Encoding\u002Fdecoding happens locally in your browser",{"icon":98,"title":114,"desc":115},"Bidirectional","Support both Base64 encoding and decoding",{"icon":102,"title":117,"desc":118},"Real-Time","Instant conversion as you type",{"icon":106,"title":120,"desc":121},"One-Click Copy","Copy results to clipboard instantly",{"zh":123,"en":135},[124,128,132],{"icon":125,"title":126,"desc":127},"lucide:clipboard-paste","输入内容","粘贴文本或上传文件到输入区域",{"icon":129,"title":130,"desc":131},"lucide:arrow-right-left","选择编码方向","点击「编码」或「解码」按钮执行转换",{"icon":106,"title":133,"desc":134},"复制结果","一键复制转换结果，直接粘贴到目标位置使用",[136,139,142],{"icon":125,"title":137,"desc":138},"Input Content","Paste text or upload a file into the input area",{"icon":129,"title":140,"desc":141},"Choose Direction","Click Encode or Decode to perform the conversion",{"icon":106,"title":143,"desc":144},"Copy the Result","Copy the output with one click and paste it wherever needed",{"zh":146,"en":170},[147,151,154,158,162,166],{"icon":148,"title":149,"desc":150},"lucide:image","图片内嵌到网页","将图片转为 Base64 直接嵌入 HTML\u002FCSS，无需额外请求",{"icon":94,"title":152,"desc":153},"调试 API 认证","解码 Authorization 头中的 Base64 凭据，快速排查认证问题",{"icon":155,"title":156,"desc":157},"lucide:file-code","处理邮件附件编码","解码 MIME Base64 附件内容，查看原始数据",{"icon":159,"title":160,"desc":161},"lucide:database","传输二进制数据","将文件编码为 Base64 字符串，安全嵌入 JSON 或 XML",{"icon":163,"title":164,"desc":165},"lucide:code","前端资源优化","小图标转 Base64 减少 HTTP 请求，提升页面加载速度",{"icon":167,"title":168,"desc":169},"lucide:terminal","脚本自动化编码","在 CI\u002FCD 脚本中快速验证 Base64 编解码逻辑是否正确",[171,174,177,180,183,186],{"icon":148,"title":172,"desc":173},"Embed Images in HTML","Convert images to Base64 and inline them in HTML\u002FCSS with no extra requests",{"icon":94,"title":175,"desc":176},"Debug API Auth Headers","Decode Base64 credentials in Authorization headers to troubleshoot auth issues",{"icon":155,"title":178,"desc":179},"Decode Email Attachments","Decode MIME Base64 attachment data to inspect raw file content",{"icon":159,"title":181,"desc":182},"Transfer Binary Data","Encode files as Base64 strings to safely embed in JSON or XML payloads",{"icon":163,"title":184,"desc":185},"Optimize Frontend Assets","Inline small icons as Base64 to reduce HTTP requests and improve load speed",{"icon":167,"title":187,"desc":188},"Automate CI\u002FCD Encoding","Quickly verify Base64 encode\u002Fdecode logic in automation scripts and pipelines",{"zh":190,"en":191},"\u003Ch2>2026 年开发者为什么需要 Base64 编解码工具？\u003C\u002Fh2>\n\u003Cp>Base64 是一种将二进制数据编码为 ASCII 字符串的方案，在 Web 开发中有着广泛的应用。从 API 请求中传递认证令牌、在 HTML 中内嵌图片数据，到处理邮件附件和 JWT（JSON Web Token），Base64 编码几乎无处不在。\u003C\u002Fp>\n\u003Cp>在 2026 年，前后端交互日趋复杂，涉及 Base64 的场景也越来越多。调试 API 时需要解码 Base64 格式的请求体，处理 OAuth 令牌时需要查看编码后的 payload，开发邮件系统时需要对附件进行编解码。一款顺手的 Base64 工具能显著提升这些工作的效率。\u003C\u002Fp>\n\u003Cp>MeTool 的 Base64 编解码工具支持 UTF-8 文本与 Base64 之间的双向转换。所有编解码操作均在浏览器中完成，你的敏感数据（如令牌、密钥）不会经过任何外部服务器，确保信息安全。\u003C\u002Fp>\n\u003Ch2>MeTool Base64 工具的核心功能\u003C\u002Fh2>\n\u003Ch3>双向即时转换\u003C\u002Fh3>\n\u003Cp>支持文本到 Base64 编码和 Base64 到文本解码两个方向的转换。只需切换模式，即可在编码和解码之间自由切换，结果实时显示。\u003C\u002Fp>\n\u003Ch3>完整的 UTF-8 支持\u003C\u002Fh3>\n\u003Cp>完美支持包含中文、日文、韩文、Emoji 等多字节字符的文本编解码。不会出现乱码或编码错误，确保国际化场景下的正确处理。\u003C\u002Fp>\n\u003Ch3>数据传输场景优化\u003C\u002Fh3>\n\u003Cp>专为开发者常见的数据传输场景设计。无论是编码 API 认证信息、处理 Data URI 图片嵌入，还是解析 JWT Token 中的 payload 部分，都能轻松应对。\u003C\u002Fp>\n\u003Ch3>安全的本地处理\u003C\u002Fh3>\n\u003Cp>所有编解码过程完全在你的浏览器中执行，数据不会上传至任何服务器。这对于处理包含密钥、令牌或个人信息的数据尤为重要。\u003C\u002Fp>\n\u003Ch2>如何使用 MeTool 进行 Base64 编解码\u003C\u002Fh2>\n\u003Col>\n\u003Cli>\u003Cstrong>打开工具：\u003C\u002Fstrong>访问 MeTool 的 Base64 编解码页面，无需登录即可开始使用。\u003C\u002Fli>\n\u003Cli>\u003Cstrong>选择模式：\u003C\u002Fstrong>根据需要选择「编码」（文本 → Base64）或「解码」（Base64 → 文本）模式。\u003C\u002Fli>\n\u003Cli>\u003Cstrong>输入内容：\u003C\u002Fstrong>在输入区域粘贴或键入你要处理的文本或 Base64 字符串。工具会实时显示转换结果。\u003C\u002Fli>\n\u003Cli>\u003Cstrong>复制结果：\u003C\u002Fstrong>点击复制按钮，将转换结果复制到剪贴板，直接用于你的代码、API 请求或配置文件中。\u003C\u002Fli>\n\u003C\u002Fol>\n","\u003Ch2>Why Developers Need a Base64 Encoder\u002FDecoder in 2026\u003C\u002Fh2>\n\u003Cp>Base64 is an encoding scheme that converts binary data into ASCII strings, and it is used extensively in web development. From passing authentication tokens in API requests and embedding images in HTML via Data URIs, to processing email attachments and JSON Web Tokens (JWT), Base64 encoding is virtually ubiquitous.\u003C\u002Fp>\n\u003Cp>In 2026, frontend-backend interactions are increasingly complex, and Base64 scenarios continue to multiply. Debugging APIs requires decoding Base64 request bodies, handling OAuth tokens means inspecting encoded payloads, and email system development involves encoding and decoding attachments. A convenient Base64 tool significantly boosts efficiency in all these tasks.\u003C\u002Fp>\n\u003Cp>MeTool's Base64 encoder\u002Fdecoder supports bidirectional conversion between UTF-8 text and Base64. All encoding and decoding operations run entirely in your browser — your sensitive data such as tokens and keys never passes through any external server, ensuring complete information security.\u003C\u002Fp>\n\u003Ch2>Key Features of MeTool Base64 Tool\u003C\u002Fh2>\n\u003Ch3>Instant Bidirectional Conversion\u003C\u002Fh3>\n\u003Cp>Switch seamlessly between text-to-Base64 encoding and Base64-to-text decoding. Simply toggle the mode, and results appear in real time — no page reloads or separate tools needed.\u003C\u002Fp>\n\u003Ch3>Full UTF-8 Support\u003C\u002Fh3>\n\u003Cp>Handles multi-byte characters including Chinese, Japanese, Korean, and emoji flawlessly. No garbled output or encoding errors, ensuring correct processing for internationalized content.\u003C\u002Fp>\n\u003Ch3>Optimized for Data Transmission\u003C\u002Fh3>\n\u003Cp>Designed for common developer scenarios: encoding API authentication headers, creating Data URI image embeds, and parsing JWT token payloads. Each use case is handled smoothly out of the box.\u003C\u002Fp>\n\u003Ch3>Secure Local Processing\u003C\u002Fh3>\n\u003Cp>All encoding and decoding happens entirely in your browser — data is never uploaded to any server. This is especially critical when handling strings that contain keys, tokens, or personally identifiable information.\u003C\u002Fp>\n\u003Ch2>How to Use MeTool Base64 Encoder\u002FDecoder\u003C\u002Fh2>\n\u003Col>\n\u003Cli>\u003Cstrong>Open the Tool:\u003C\u002Fstrong> Navigate to MeTool's Base64 page — no login required to start using it.\u003C\u002Fli>\n\u003Cli>\u003Cstrong>Select Mode:\u003C\u002Fstrong> Choose "Encode" (text → Base64) or "Decode" (Base64 → text) depending on your need.\u003C\u002Fli>\n\u003Cli>\u003Cstrong>Enter Content:\u003C\u002Fstrong> Paste or type your text or Base64 string in the input area. 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