Encode & Decode
Encoding, decoding, hashing, escaping and data conversion tools
Select a tool below. Every tool runs locally in your browser and is free to use.
🔐 Encode & Decode · Total 8 tools
Base58 Encoder / DecoderBase58 codec tool: support Base58 encoding and decoding for Bitcoin address format for development and blockchain, with one-click copy, offline.
Mã hóa/Giải mã Base64Online Base64 encode and decode: supports text, URL and images with full UTF-8 including Chinese. Import files, batch process and one-click copy for dev and data transfer.
Mã hóa/Giải mã HEX và Trình xem hệ thập lục phânHex converter: support text and hex conversion with offset and ASCII hex dump viewer for development and debugging, with one-click copy and offline.
Trình giải mã JWTJWT decoder: decodes JWT header and payload via Base64Url to JSON locally. For auth debugging. Supports batch processing, export and one-click copy, offline use.
Máy tính băm SHASHA hash calculator: compute SHA-1, SHA-256 and SHA-512 hashes for file verification and learning, with one-click copy and offline.
Mã hóa/Giải mã URLURL encode decode tool: support URL encoding and decoding with special characters and bulk for development, with one-click copy, offline.
Trình phân tích tham số URL/Tạo URLURL params parser: parse query string to JSON and table handling repeats and encoding or generate back for development, with one-click copy and offline.
Vigenere Cipher ToolVigenere cipher tool: encrypt and decrypt text by key with case preserve for learning and fun, with one-click copy, offline.
FAQ
What is the Encode & Decode category?
The Encode & Decode category includes 8 free online tools for common needs. All run locally in your browser - no sign-up or install required.
Are these tools free?
Yes, all tools are free with no usage limits.
Do I need to register?
No. Open a page and use it right away - your data stays in your browser.
Which languages are supported?
This site supports 12 languages: Chinese, English, Japanese, Korean, Spanish, French, German, Portuguese, Russian, Arabic, Indonesian and Hindi.