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0 votes
1 answer
374 views

How to DEFLATE with a command line tool to extract a page from Microsoft Server

How can I view html page from Server: Microsoft-IIS/10.0 with header: "Accept-Encoding: deflate" I can't decompress such html page in Linux(Centos). I can decompress with "Accept-...
DimaGra's user avatar
  • 11
2 votes
1 answer
1k views

Deflate compression - numerical example

I am really interested to see a numerical example how deflate compression works, by hand. The following very short text 'abc' has been compressed using the deflate algorithm outputting '...
James's user avatar
  • 153
4 votes
0 answers
11k views

How to decode a PDF file to a readable format?

I want to decode a PDF file so I can use/edit the elements inside the pdf, I want to use/edit them in Lua so I have to have the readable format. This is the format I need. %PDF-1.3 ... << /...
JManKorl's user avatar
1 vote
0 answers
2k views

difference between gzip and gzip, deflate

I want to know what is the difference when I add Accept-Encoding: gzip, deflate in request header and when I only add Accept-Encoding: gzip. Because in response header I could see Content-Encoding : ...
Mandrik Xavi's user avatar
0 votes
1 answer
114 views

How to properly use Ruby CGI module for gzipped output?

This code doesn't work in Firefox 38.0.1 (Content Encoding Error) and Google Chrome 42.0.2311.152 (ERR_CONTENT_DECODING_FAILED), however it works with Opera 12.16 and cURL (with --compressed option): ...
Konstantin's user avatar
  • 3,093
13 votes
2 answers
11k views

Trying to understand zlib/deflate in PNG files

I'm currently in the middle of writing a small PNG image I/O library myself for learning purposes. My problem is the following: I created a small PNG only 2 by 2 pixels in dimension and opened it in ...
Rafael Pasquay's user avatar
2 votes
2 answers
6k views

Deflate Algorithm Pseudocode

I am currently trying to understand how DEFLATE algorithm works. I know that it is a combination of LZ77 and Huffman Coding. I've studied how those two work, but I currently have no idea how they are ...
bless1204's user avatar
  • 653
2 votes
1 answer
6k views

DEFLATE Encoding with static Huffman Codes

need some help to understand how DEFLATE Encoding works. I know that is a combination of the LZSS algorithm and Huffman coding. So let encode for example "Deflate late". Params: [Search buffer: 8kb ...
FewG's user avatar
  • 23
1 vote
2 answers
5k views

Dynamic Huffman Encoding on Deflate - RFC 1951

I am developing a file compressor program. We are currently implementing .ZIP archiver standart, so that when generate a compressed .ZIP archiver any other reputable compressor (such as 7zip) can ...
Fonserbc's user avatar
1 vote
1 answer
563 views

gzip or deflate files can it be merged together? for api

i have api that let you get one or more files content in one request and i have them as deflate/gzip and normal text, for now im using normal text, but was wondering if i can merge deflate files and ...
Basit's user avatar
  • 16.9k
69 votes
6 answers
24k views

Why do real-world servers prefer gzip over deflate encoding?

We already know deflate encoding is a winner over gzip with respect to speed of encoding, decoding and compression size. So why do no large sites (that I can find) send it (when I use a browser that ...
Steve Clay's user avatar
  • 8,761