Actually I trying to upload large text and pdf files. I want to compress file chunks in browser only. So i can encrypt and send these lite chunk through ajax smoothly without hanging browser. I am seeking help related to file chunk compression. And at server side easily can decompress using java library. Can anyone suggest me best way to do it ? It should be in client side and inside browser(IE11,Google Chrome).
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2why is here `java` tag? – Andrew Tobilko Mar 16 '16 at 17:35
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I think Amazon sends all its images as zip files, to save space and increase upload times, as is evident, but I'm not sure about the exact compression type - might be bzip or gzip. – Arif Burhan Mar 16 '16 at 17:37
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If anyway we can call java utility inside javascript so. – Jeet Mar 16 '16 at 17:37
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http://danml.com/js/compression.js has deflate() and inflate() which works pretty well – dandavis Mar 16 '16 at 17:42
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@ArifBurhan okay but if you have some idea can you tell me which library i can you use my case. – Jeet Mar 16 '16 at 17:43
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yeah, the core was written in 1999, and now it's easier than ever to send binary without `btoa()` support – dandavis Mar 16 '16 at 17:57
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@dandavis okay I will try it out. – Jeet Mar 16 '16 at 18:06
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if you will `inflate()` with java, mind the UTF encoding of JS strings... – dandavis Mar 16 '16 at 18:11
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@dandavis sure I will do. One more thing , where can i get document for this library(danml.com/js/compression.js ) then it will be easy for me. – Jeet Mar 16 '16 at 18:14
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afaik, there is none. `deflate(strContent)` returns `strCompressed`, `inflate()` does the opposite. `inflate(deflate("hello"))=="hello";` – dandavis Mar 16 '16 at 18:32
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@dandavis okay , thanks – Jeet Mar 16 '16 at 18:35
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Gzip is a popular method for compressing data before sending it over the web.
There are many javascript libraries, such as https://github.com/beatgammit/gzip-js which will compress a string/byte array for you.
Java has Gzip functionality built-in through java.util.zip.GZIPInputStream;; a simple google search will make it easy to learn how to use it.
Ameo
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thanks but I have to use in production so i have some restrictions on GPL license so. If you can help me with client side with other library please. I m okay with server side GZIP. – Jeet Mar 16 '16 at 17:53
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There are several JS libs that can help you with that, if the zip format is acceptable. JSZip is one of the most well known ones.
OliverRadini
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lucasnadalutti
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thanks but It's under gpl so I can't use it. If any other suggestions please let me know. – Jeet Mar 16 '16 at 18:01