Top "Compression" questions

The name given to the process of encoding data such that it uses lesser number of bits as compared to the original representation.

bitmap.compress(Bitmap.CompressFormat.PNG, 0, fOut) making image size bigger than original

I want to compress the image taken from a camera to png format to make them smaller in size, so …

android compression image-resizing bitmapfactory
How do I concatenate JavaScript files into one file?

I want to create a compiled JavaScript file for my website. For development I would prefer to keep the JavaScript …

javascript batch-file compression
Why does base64-encoded data compress so poorly?

I was recently compressing some files, and I noticed that base64-encoded data seems to compress really bad. Here is …

compression lossless-compression
Compress file on S3

I have a 17.7GB file on S3. It was generated as the output of a Hive query, and it isn't …

amazon-s3 compression hive file-transfer emr
System.IO.Compression and ZipFile - extract and overwrite

I'm using the standard VB.NET libraries for extracting and compressing files. It works as well but the problem comes …

.net vb.net zip compression system.io.compression
Deflate compression browser compatibility and advantages over GZIP

UPDATE Feb 10 2012: zOompf has completed some very thorough research on this very topic here. It trumps any findings below. UPDATE …

optimization compression gzip zlib deflate
Can you use gzip over SSL? And Connection: Keep-Alive headers

I'm evaluating the front end performance of a secure (SSL) web app here at work and I'm wondering if it's …

ssl https compression gzip
When compressing and encrypting, should I compress first, or encrypt first?

If I were to AES-encrypt a file, and then ZLIB-compress it, would the compression be less efficient than if I …

encryption compression performance aes zlib
Really simple short string compression

Is there a really simple compression technique for strings up to about 255 characters in length (yes, I'm compressing URLs)? I …

c# string compression short
How does MPEG4 compression work?

Can anyone explain in a simple clear way how MPEG4 works to compress data. I'm mostly interested in video. I …

algorithm video compression video-streaming mpeg