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Letters Extraction

Tool to extract letters from a message according to a pattern. It is possible to hide a text into another by adding parasites letters. Letters can follow a regular extraction pattern (eg: 1 letter of 2).

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Letters Extraction -

Tag(s) : Steganography, Data Processing

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NB: for encrypted messages, test our automatic cipher identifier!


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Letters Extraction

Letters Extractor from a Text










Answers to Questions (FAQ)

How to extract letters from a text?

Take the message ABCDEFGHIJKLMNOPQRSTUVWXYZ, dCode offers different modes for letters extraction:

Take 1 of N letters

Example: Taking 1 of 2 letters: A-C-E-G-I-K-M-O-O-O-U-W-Y-

Example: Taking 1 of 3 letters: A--D--G--J--M--P--S--V--Y-

Extract a pattern

Example: The pattern 2,3 means to take 1 letter each 2 and 1 letter each 3: A-C--F-H--K-M--P-R--U-W--Z

Extract by mask (1 = preserved letter, 0 = letter ignored)

Example: Using the binary mask 101: A-CD-FG-IJ-LM-OP-RS-UV-XY

The patterns and masks are repeated until reaching the end of the message.

If needed, start using any letter rather than the first letter.

Example: Taking a letter of 2 (starting at position 1): A-C-E-G-I-K-M-O-O-O-U-W-Y-

Example: Taking a letter of 2 (starting at position 2): -B-D-F-H-J-L-N-P-R-T-V-X-Z

Punctuation may (or may not) be taken into account in characters count.

How to extract letters in Excel?

Although this is not practical, Excel provides functions such as RIGHT() or LEFT() to extract N letters at the beginning or end of words. (dCode is better and recommended)

What is an acrostic?

An acrostic is a poem or message from which certain letters or words can be extracted to give a second meaning to the message.

Source code

dCode retains ownership of the online 'Letters Extraction' tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any 'Letters Extraction' algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any 'Letters Extraction' function (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and no data download, script, copy-paste, or API access for 'Letters Extraction' will be for free, same for offline use on PC, tablet, iPhone or Android ! dCode is free and online.

Need Help ?

Please, check our dCode Discord community for help requests!
NB: for encrypted messages, test our automatic cipher identifier!

Questions / Comments

Thanks to your feedback and relevant comments, dCode has developed the best 'Letters Extraction' tool, so feel free to write! Thank you!


Source : https://www.dcode.fr/letters-extraction
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