Bulk Base64 Converter
Free online text base64 bulk tool. Browser-based, private, no uploads.
Input Text
Conversion Options
Specialized Actions
Related reading
Bulk Base64 Converter
Encode or decode many lines or strings in one batch.
Why it matters: Bulk mode saves time when processing lists of values at once.
How to use Base64
- 1 Type or paste your text into the input box above.
- 2 Click Encode to turn text into Base64, or Decode to convert it back.
- 3 Toggle URL-safe mode for links, or UTF-8 for emoji and accents.
- 4 Use JWT / API-key / JSON modes for developer workflows.
- 5 Copy the result or open a specialized tool from the hub below.
Frequently Asked Questions
Up to 1,000 lines. Each line is treated as a separate string to encode/decode. Encoding and decoding happen entirely in your browser, so your text never leaves your device. The tool supports standard, URL-safe, and UTF-8 Base64 modes.
No. Choose one mode (Encode or Decode) for the entire batch to ensure consistent output. Encoding and decoding happen entirely in your browser, so your text never leaves your device. The tool supports standard, URL-safe, and UTF-8 Base64 modes.
Download as CSV or TXT. CSV includes original and converted columns for easy spreadsheet analysis. Encoding and decoding happen entirely in your browser, so your text never leaves your device. The tool supports standard, URL-safe, and UTF-8 Base64 modes.
No. Base64 is computationally cheap. Even 1,000 strings process in milliseconds in your browser. Encoding and decoding happen entirely in your browser, so your text never leaves your device. The tool supports standard, URL-safe, and UTF-8 Base64 modes.
Yes. There is no charge, no account, and no watermark on the output. Encoding and decoding happen entirely in your browser, so your text never leaves your device. The tool supports standard, URL-safe, and UTF-8 Base64 modes.
All Base64 Tools
Encode, decode, and inspect Base64 for web, APIs, and JWTs.
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