What is Base64 Decoding?
Base64 decoding converts the Base64-encoded string back into its original text form. This is commonly used in data transmission, APIs, JWT tokens, and web development.
Example: SGVsbG8= → Hello
Why People Use Base64?
- Decode text from API or JSON responses
- Read hidden text in JWT and data URIs
- Extract readable content from encoded emails
- Inspect encoded web & network data
- Recover original text for debugging
Tool Features
- ⚡ Real-time Base64 decoding
- 📎 Auto-decode on paste
- 📋 One-click copy
- 💾 Download decoded text
- 🔐 Privacy-first — No server used
- 🌍 UTF-8 support (emojis ✓ foreign languages ✓)
How to Use This Tool
- Paste your Base64 string into the input box
- See decoded text appear automatically
- Copy or download your output
- Click reset to clear both boxes
FAQ
Base64 decode error?
Make sure the string contains valid Base64 characters (A-Z, a-z, 0-9, +, /, =).
Is my Base64 data safe?
Yes — this tool runs 100% in your browser. Nothing is uploaded.
Can I decode Base64 URLs?
Yes. URL-safe Base64 is supported.