Input Text
ENCODE FROM
Base64 Output
RESULT
Encode and decode Base64 strings instantly. Supports text, URLs, files and images — all processing in your browser, 100% private.
Our free Base64 encoder and decoder lets you convert text, URLs, files, and images instantly. All processing happens locally in your browser, ensuring 100% privacy and security. No account, no software, and no risk — just paste, encode, decode, and copy results instantly.
Base64 encoding is widely used in web development, cryptography, and data transfer. With our tool, you can generate Base64 strings, decode them back to original data, and even handle advanced options like URL‑safe encoding, removing padding, or adding line breaks.
Unlike online converters that send your data to external servers, our tool guarantees complete confidentiality. Developers, IT professionals, and businesses can rely on it for secure workflows, automated pipelines, and sensitive data handling.
Base64 encoding is a method of representing binary data using ASCII characters. It converts data into a string of letters, numbers, and symbols that can be safely transmitted over text‑based protocols like email, JSON, or HTML.
Our tool supports Base64 encoding and decoding for multiple input types: text, files, images, and hex strings. You can also use URL‑safe Base64, which replaces + and / with - and _, making it safe for web addresses.
Because everything runs locally, your data never leaves your device. This makes our tool suitable for developers, IT professionals, and anyone working with secure data.
Base64 is standardized under RFC 4648, ensuring compatibility across programming languages, APIs, and frameworks. Whether you are working in JavaScript, Python, PHP, or Java, Base64 remains a universal solution for encoding and decoding binary data.
Base64 is one of the most practical tools in modern computing. Here are the most popular and effective use cases:
Convert images to Base64 data URIs to embed directly in web pages without external files.
Encode files into Base64 for safe transmission over text‑based protocols like email or JSON.
Use URL‑safe Base64 encoding to embed data in query strings without breaking links.
Convert any text or string into Base64 instantly for secure storage or transmission.
Base64 is often used in cryptographic applications to represent binary keys or certificates.
Beyond these, Base64 is also used in APIs, JWT tokens, cloud storage systems, and IoT devices where binary data must be safely embedded in text‑based formats.
Our tool supports both encoding and decoding. Here is a clear comparison to help you choose:
| Action | Purpose | Example |
|---|---|---|
| ⬆️ Encode | Convert text, files, or images into Base64 | "Hello" → "SGVsbG8=" |
| ⬇️ Decode | Convert Base64 back to original data | "SGVsbG8=" → "Hello" |
| 🔗 URL Encode/Decode | Make Base64 safe for URLs | "+" → "-" and "/" → "_" |
Use Encode when preparing data for transmission. Use Decode when converting Base64 back to its original form.
For developers, encoding ensures binary data can be embedded in JSON APIs, while decoding restores the original file or message. This dual functionality makes Base64 indispensable in modern programming.
Replace + and / with - and _ when embedding Base64 in URLs.
Skip "=" signs when compact output is required.
Break long Base64 strings into 76‑character lines for readability.
Ensure your Base64 string is valid before decoding to avoid errors.
Since processing is local, your data stays secure — never share sensitive Base64 publicly.
Additionally, integrate Base64 with secure storage systems, password managers, or encryption workflows. In CI/CD pipelines, Base64 can be used to safely store environment variables and configuration files without exposing raw binary data.