Base64 Encode - Decode
Encode plain text to Base64 or decode Base64 back into readable text instantly. Everything runs locally in your browser.
Status
0
Characters
0 B
Input Size
0 B
Output Size
Unknown
Encoding
Privacy
Everything is processed locally in your browser. Your data is never uploaded or stored.
How To Use
Paste your text
or Base64 into the input editor, or upload a file.
Click Encode or Decode
to convert the input.
Review the result
in the output editor.
Copy or download
the output for use elsewhere.
Repeat
whenever you need another conversion.
About Base64 Encode - Decode
The DevToolVerse Base64 Encode - Decode tool lets you encode plain text to Base64 or decode Base64 back into readable text, entirely online in your browser. It supports both directions of Base64 conversion, so whether you're inspecting Base64 text, decoding encoded tokens, or debugging text-based API payloads, you can move between readable text and Base64 format using the same tool.
All processing happens locally in your browser, meaning your data is never uploaded to a server. This keeps your text private while providing fast, accurate encoding and decoding.
Features
Encode text to Base64
converts plain text into a Base64-encoded string for online use.
Decode Base64 to text
converts Base64 back into readable text, completing the two-way conversion.
Upload text files
for quick encoding or decoding.
Copy results
to your clipboard with one click.
UTF-8 support
handles a wide range of characters accurately.
Browser processing
every conversion runs entirely on your device.
Privacy first
your data is never uploaded or stored.
Fast conversion
instant results with no noticeable delay.
Quick Reference
Base64 converts binary or text data into ASCII characters for safe transport. It is an encoding format, not encryption.
| Example | Result |
|---|---|
| Hello | SGVsbG8= |
| ChatGPT | Q2hhdEdQVA== |
| Padding | = |
| URL-Safe Chars | - / _ (unsupported here) |
| Encoding | UTF-8 |
Limitations & Important Notes
- Standard Base64 only: This tool supports standard Base64. Base64URL values using "-" and "_", including URL-safe variants, are not supported.
- Text files only: File uploads load text-file contents for encoding or decoding. The tool does not encode binary files such as images or PDFs, and Base64 representing non-UTF-8 binary data cannot be decoded as readable text by this tool.
- Base64 increases size: Base64 output is typically about 33% larger than the original binary or text data because of the encoding format.
FAQ
Base64 is an encoding scheme that converts binary or text data into a string of ASCII characters, making it safe to store or transmit over systems that only support text.
Yes. This tool supports both directions of Base64 conversion online: Encode converts plain text into Base64, and Decode converts Base64 back into readable text, so you can switch between the two without leaving the page.
No. Base64 is not encryption. It is a reversible encoding format designed for safe transport, not for securing or hiding data.
No. Everything is processed locally in your browser. Your data is never uploaded to any server.
The "=" character is padding, added when the input length is not a multiple of three bytes, so the encoded output aligns to a fixed block size.
URL-safe Base64 replaces the "+" and "/" characters with "-" and "_" so the encoded string can be used safely inside URLs and filenames. This tool supports standard Base64 only, so values using "-" and "_" cannot currently be encoded or decoded here.
Yes. You can upload a text file and its contents will be loaded into the input editor.
Standard Base64 uses the 64 characters A-Z, a-z, 0-9, "+" and "/", plus "=" for padding.