Text Encoder / Decoder
Encode and decode text across Base64, Hexadecimal, Binary, Unicode Escapes, UTF-8 Byte streams, and URL Percent formats in real-time.
All conversions execute 100% client-side in browser memory with zero cloud transmission.
Plain Input Text
35 chars • 37 bytesEncoded BASE64 Result
52 chars • 52 bytesMulti-Format Text Encoding & Decoding Workspace
Encoding converts raw textual data into standardized binary or character representations required for data transport, cryptographic protocols, storage, and web APIs. Decoding reverses this transformation back into human-readable text.
This utility supports Base64, Base64 URL-safe, Hexadecimal (0x), 8-Bit Binary, Unicode escapes (\uXXXX), UTF-8 hex byte sequences (\xHH), and URL percent-encoding. All transformations execute locally in your browser.
Core Tool Capabilities
- 7 Encoding Standards: Support for Base64, Base64 URL, Hexadecimal, Binary, Unicode Escapes, UTF-8 Bytes, and URL Percent Encoding.
- Bidirectional Encoding & Decoding: Instant switching between encoding plain text and decoding formatted byte streams.
- Custom Separators & Prefixes: Configure space or comma separators for binary/hex streams, and add 0x prefixes.
- Byte & Character Analytics: Real-time metrics tracking input/output character counts and UTF-8 byte sizes.
Local Browser Privacy
Your files are processed locally on your device. Files are not uploaded, transmitted, or stored on remote servers.
Once the page has loaded, you can disconnect your network connection and continue using this tool offline.
Target Use Cases
- • Web API Development
- • Low-Level & Embedded Debugging
- • Web Security & Penetration Testing
- • Internationalization Testing
Technical Specifications & Platform Limits
Comprehensive coverage of web, network, and low-level data encodings
Safely handles emojis, international scripts, and non-ASCII character sequences
Instant execution in client browser memory
No external network requests or server logging
Step-by-Step Workflow
Choose Direction & Format
Select whether to Encode or Decode, and pick your target encoding format from the dropdown.
Enter Input Text
Type or paste raw text or encoded characters into the input editor.
Configure Output Preferences
Adjust byte separators (space, comma, none) or 0x hex prefixes if needed.
Copy or Download Output
One-click copy the output string or export as a text file.
Practical Real-World Use Cases
Web API Development
Developers encode authorization headers, token payloads, and JSON data for HTTP transmissions.
Low-Level & Embedded Debugging
Developers inspect raw UTF-8 byte arrays, hexadecimal representations, and binary bit values.
Web Security & Penetration Testing
Developers decode obfuscated payloads, parameter values, and Unicode escape sequences.
Internationalization Testing
Developers verify UTF-8 multi-byte character representation and escape formats.
Frequently Asked Questions
- What is the difference between Base64 and Base64 URL-Safe?
- Standard Base64 uses '+' and '/' characters with '=' padding. Base64 URL-safe replaces '+' with '-' and '/' with '_', and strips '=' padding so the string can be placed safely in web URLs and query parameters.
- How does Hexadecimal text encoding work?
- Each character is converted to its underlying UTF-8 byte values, which are then represented as 2-digit hexadecimal numbers (00 to FF).
- What happens if I enter invalid text for decoding?
- The tool automatically detects malformed input (such as odd-length hex strings or invalid Base64 characters) and displays a clear error message without breaking.
- Is my input text stored or transmitted?
- No. All encoding and decoding runs entirely within your browser.
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