[reportlab-users] PDF Report size too large
ralsina at netmanagers.com.ar
Mon Jan 23 15:38:57 EST 2012
On 1/23/2012 5:30 PM, Jean-Yves F. Barbier wrote:
> On Sat, 21 Jan 2012 05:15:14 +0000
> Asif Jamadar<asif.jamadar at rezayat.net> wrote:
>> I'm using Reportlab tool to generate dynamic PDF.
>> The generated PDF consist of 1 or 2 pages but the size this PDF
>> reached to 5 MB. How can I decrease the size of the generate PDF.
>> I want to decrease the size to max 500 TB. IS there any way to
>> accomplish this thing in reportlab?
> This is finally a good question, indeed - so I made some tests.
> Greping RL code shows that it use zlib; if it's a good&
> fast compression technique for communications it is not
> as good for file compression.
> I didn't wanted to modify RL code, so I found this way:
> * create an uncompressed PDF w/RL
> * transform it to PostScript
> * re-transform PS to PDF
> It lowered an already RL compressed PDF from 258kB to 74kB
> (3.5x less) - but the chances to lower to 500kB from 5 MB
> are very low...
The main reasons for a PDF to reach 5MB are:
1) It's really really long. If that's the case, you can enable compression.
2) It has embedded fonts. If that's the case: don't.
3) It has images. You can make this smaller by using worse quality
images, or by removing them.
Without a sample PDF, it's not possible to know what's the cause, though.
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