About Show Base64 offsets
When a string is within a block of data and the whole block is Base64'd, the string itself could be represented in Base64 in three distinct ways depending on its offset within the block. This operation shows all possible offsets for a given string so that each possible encoding can be considered.
Input: binary bytes. Output: HTML with a sandboxed preview.
Format reference: Show Base64 offsets background and specification
Example
Use “Try example” to load this public sample and its settings, then run it.
Settings used in this example
| Parameter | Example value | Input and choices |
|---|---|---|
| Alphabet | "<script>ale(1)/.ABCDEFGHIJKLMNOPQRSTUVWXYZbdfghjkmnoquvwxyz023456" | Escape sequences such as \n, \r and \t are supported |
| Show variable chars and padding | false | On or off |
| Input format | Raw | Raw, Base64 |
Result
The result is shown in the preview; download it to inspect the generated content.
Parameters
| Parameter | Default value | Input and choices |
|---|---|---|
| Alphabet | "A-Za-z0-9+/=" | Escape sequences such as \n, \r and \t are supported |
| Show variable chars and padding | true | On or off |
| Input format | Raw | Raw, Base64 |
Before interpreting the result
Choose a decoder for an encoded payload, an encoder for transport, or a converter for structured data. Hex and Base64 represent bytes; converting formats does not encrypt or authenticate them.
How to use this page
- Paste your input or open a local file.
- Adjust tool options if needed, then choose Run tool.
- Copy the result or download the original output bytes.
Inputs and results are not added to the public catalogue or saved in the URL. Processing happens in your browser; HTTP Request and DNS over HTTPS send the requests you explicitly run. Files up to 128 MiB can be opened; decompression and image tools may have smaller processing limits. Large results have a shortened preview. Text and HTML downloads use UTF-8; binary downloads preserve output bytes. Pasted text follows browser newline handling; open a file when exact input bytes matter.