by Brendan Silva
Version 4 (April 22, 2025)
Download (17 downloads)
This flowchart attempts to reduce the length of a single line of text to maximize available space in mobile messaging services. The compression method only accepts uppercase letters, spaces, periods (.) and question marks (?). However, it offers some distinct advantages:
⦁ No redundancy dictionary is used, meaning even very short messages can benefit from compression.
⦁ The method directly maps the GSM-7 character table into a 29-character pseudo-alphabet, resulting in a predictable compression ratio (approximately 4:3). For example, if the messaging service allows up to 140 characters, you can write approximately 180 compressed characters.
─── 𝗜𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝘁 ───
⒈ Disable any automatic accent or diacritic removal settings in your messaging app. Please note that this flowchart is experimental, so test it before sending any messages.
⒉ The recipient must also have this flowchart in order to decompress the message. This flowchart does not send SMS by itself, but you may edit it to include this feature if desired.
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Tags: af04, algorithm, alphabet, bypass, call, calling, communication, compressed, compression, conversion, custom, data, decompression, encoding, format, gsm, gsm-7, incoming, length, limit, mapping, message, messaging, method, optimization, optimizer, ratio, reduce, reduction, removal, saving, shortening, shrink, sms, space, space saving, string, technique, telecom, telephone, text, texting, transformation, transmission
𝑏𝑦 𝐵𝑟𝑒𝑛𝑑𝑎𝑛 𝑆𝑖𝑙𝑣𝑎
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