Base64 Decoder
Quickly decode any text to Base64. All processing happens in your browser.
Decode Base64 to Text
Paste Base64 text below and click Decode to get the original text.
How to Use Base64 Decoder
👉 Step-by-step guide
About Base64 Decoder
The Base64 Decoder reverses Base64-encoded data back into readable text. It decodes Base64 strings produced by encoders and common libraries so you can inspect, copy, or save the original content.
This tool runs fully in your browser using modern JavaScript (no external libraries). Decoding happens client-side and no data is sent to the server, preserving privacy. It supports Unicode decoding, but note that decoding arbitrary binary data may produce unprintable characters - use the download option if you need the raw bytes.
Important: Base64 is an encoding, not encryption. Anybody can decode a Base64 string - do not use this tool to protect secrets.
What Makes Our Base64 Decoder Useful?
- Unicode-aware Decoding: Correctly decodes non - ASCII characters and emojis back to their original form.
- Client-side Processing: All decoding runs in your browser - nothing is uploaded to the server, protecting privacy.
- Robust Error Handling: Detects malformed Base64 and shows helpful error messages instead of failing silently.
- Variant Support: Accepts standard Base64 and common variants (with or without padding) and trims whitespace automatically.
Common Use Cases for the Decoder
- Inspect API Responses: Quickly decode Base64 payloads returned by APIs to verify contents.
- Debugging: Decode encoded strings when troubleshooting integrations, webhooks, or logs.
- Extract Embedded Data: Convert data URLs or embedded Base64 assets (images, files) back to usable form.
- Recover Text: Decode credentials, tokens, or small data fragments when you need to inspect them (do not use for secrets).