🔓 Base64 Decoder
Decode Base64 strings back to plain text. Supports UTF‑8. Fast, offline, and 100% private – your data never leaves your device.
📖 How to Use Base64 Decoder (Step by Step)
- Step 1: Paste a Base64‑encoded string into the left text area.
- Step 2: Optionally select the character set (UTF‑8 or ASCII).
- Step 3: Click "Decode from Base64" – the decoded text appears instantly on the right.
- Step 4: Use "Copy Decoded Text" to copy the result or "Swap Fields" to exchange input and output.
- Step 5: Click "Load Sample" to try a pre‑filled example.
💡 What is Base64?
- ✔️ Base64 encodes binary data into ASCII characters for safe transmission.
- ✔️ Decoding reverses the process, turning Base64 back into readable text.
- ✔️ This tool handles UTF‑8, so international characters and emojis are preserved.
💡 Pro Tip: Use the "Load Sample" button to see a working example. The decoded text includes Unicode characters and emojis.
🔒 100% client‑side • Your data never uploaded • UTF‑8 support • Zero tracking