Title: EVALUATION OF LOSSLESS ALGORITHMS FOR DATA COMPRESSION
Abstract: Nowadays the communication and exchange of information over the internet which includes sending e-mails, text messages via online apps e.g.messengers, has become the need of the hour.While transmitting the data, some of the critical aspects like size of message or file, need to deal with extreme precaution as these are very crucial.Furthermore, the transmitting time is directly proportional to the file size i.e. lesser file size always take less time.Compression techniques are used to decrease the size of the file, meanwhile not impacting the quality.This paper demonstrates that the use of two lossless compression techniques on images so that they become suitable for information security using the techniques like steganography, cryptography etc.Thus, the objective of the paper is to reduce the image size by using Huffman encoding and run-length encoding algorithms.The algorithms are implemented and the performances are analysed by evaluating the results on different parameters, such as compression ratio, compressed file size, and compression & decompression time.The paper is concluded with the analysis of the results obtained.