Remove ALL metadata from a pdf

[design224]

PDF's can get way too large. Why does the online compressor from Adobe seem to work better than Acrobat at reducing pdfs?

One culprite seems to be all unneccessary meta data. Even when choosing Properties/Description/Additional Metadata and Advanced, it doesn't ever actually let one remove anything.. even if selecting and choosing "delete".

Online tools do it easily and completely but it's a pain to always have to rememember to strip metadata using an additional software.

Is there some setting I'm missing somewhere to make the advanced/metadata/delete work?

[try67]

Metadata info takes a very small amount of data. This is not what's making your file big.

[design224]

Right... I was so hacked off w/recent Photoshop and Acrobat issues I mis-typed that... I had meant to say how much of a space hog Acrobat is..even just the reader, and yet something simple like meta data can't be removed. 

I just want to get rid of all the meta data and it should be setting or click.

[try67]

Reader can't remove metadata. It's not a PDF editor. In Acrobat you can reset the metadata string, but not remove it entirely. This can be done using a simple script, attached to a button (so you could run it with a single click):

for (var i in this.info) 
	if (typeof this.info[i]!="object") this.info[i] = "";
this.metadata = "";