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Mã hóa/Giải mã Base64

Online 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.

Cách sử dụng

Dán văn bản, chọn "Mã hóa" hoặc "Giải mã", kết quả hiển thị theo thời gian thực, hỗ trợ sao chép một chạm.

Overview

Base64 Encode/Decode is a encode tool that Online 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. It runs 100% in your browser with no upload, so you get instant results with privacy. Whether you need a quick answer or batch processing with precise control, you can enter, validate and export in seconds. The UI is responsive on mobile, tablet and desktop and supports one-click copy.

Use cases

  • Escape HTML/Unicode to avoid injection
  • Hash and verify integrity
  • Debug URL/Base64/JWT encoding
  • Encrypt sensitive snippets locally
  • Use it to cross-check “base64、base64编码” in reports, docs or APIs to avoid manual conversion errors

How to use

  1. 1 Paste source text
  2. 2 Choose encode/decode/hash and options
  3. 3 Review highlighted errors and counts
  4. 4 Copy or download the result

Highlights

  • Local & private: processing stays in your browser
  • Live validation with tolerant parsing
  • One-click copy and export for docs, code or sheets
  • Batch and offline support under poor network

Notes

  • Whitespace and padding matter
  • Huge payloads may use more memory
  • Hashing is irreversible

FAQ

Why did decoding fail?
Illegal characters or wrong charset are common causes.
Will my data be uploaded?
No. Everything runs locally in your browser.
How is Base64 Encode/Decode different?
It runs locally with a focus on speed and privacy, plus tolerant parsing for “base64、base64编码” and one-click copy for reuse.
Can I use results in official reports?
Use it as a working draft and cross-check with authoritative sources; keep the exported log and parameters for traceability.
Tip：Tip: Bookmark this page or pin the tab; find related tools via categories and search (convert → calculate → export).
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All calculations run locally in your browser; nothing is uploaded.