Severin, I couldn't find it with a search on the App Store either.
I haven't tested PdfCompress in Sierra, so cannot comment if it works in 
Sierra. I haven't used it for a couple of years probably.
Peter may have tested it in Sierra.

Sent from Ronni's iPad4


> On 14 Apr 2017, at 5:34 pm, Severin Crisp <[email protected]> wrote:
> 
> Thanks Ronni
> Contrary to the blurb I can not see it at the App store.  I now have a copy 
> downloaded.   Thanks Peter and Ronni
> Severin
> ____________________________________________________
> 
>              Assoc Prof R Severin Crisp, FAIP, FIP, CPhys
> 15 Thomas St, Mount Clarence, Albany, 6330, Western Australia
>                   ph (08) 9842 1950 ( Int'l +61 8 9842 1950)
>                            mail to: [email protected]
> ____________________________________________________
> 
> 
> 
> 
>> On 14 Apr 2017, at 17:27, Ronni Brown <[email protected]> wrote:
>> 
>> Hi Severin,
>> 
>> PdfCompress purchase at the link Peter H supplied in his reply below.
>> <http://www.metaobject.com/Products/>
>> 
>> Purchase
>> 
>> Licenses are available via our products pages at 
>> <http://www.metaobject.com/Products/>and cost US $35 per copy, and on the 
>> Mac App Store.  Quantity discounts and site licenses, are available, please 
>> contact us.
>> 
>> Until licensed, PdfCompress will replace some of the images it finds with 
>> the PdfCompress icon.  This can lead to apparent compression that is greater 
>> than the licensed product, so please request a free trial license via the 
>> licensing panel if you are unsure.
>> 
>> NOTE:
>> Using PDF Services (only non AppStore version)
>> 
>> Alternatively, you can use PDF Services from the print panel.  To enable PDF 
>> Services, select "Add PDF Services" in the "Extras" menu and then log out 
>> and back in again.  This menu option creates a folder called "PDF Services" 
>> in the "Library" folder of your home folder and copies two files into that 
>> folder.
>> 
>> Apple has not allowed PdfCompress with the PDF Workflow feature in the Mac 
>> App Store.
>> 
>> Happy Easter
>> Cheers,
>> Ronni
>> 
>>> On 14 Apr 2017, at 1:53 pm, Severin Crisp <[email protected]> wrote:
>>> 
>>> Which PDF Compress is that Ronni.  There are several in the App Store and 
>>> others  on the internet.   
>>> Enjoy Easter, hopefully in pleasant sunshine like we have!
>>> Severin
>>> 
>>>> On 14 Apr 2017, at 11:40 am, Ronda Brown <[email protected]> wrote:
>>>> 
>>>> OMG Peter H, 
>>>> I completely forgot about PDFCompress, I've have it on all my Macs and had 
>>>> used it for years to compress large PDFs of mine, but have not needed to 
>>>> use it for some time, so had forgotten how good it is ;-))
>>>> 
>>>> Yes well worth the purchase price!
>>>> 
>>>> Happy Easter
>>>> Cheers,
>>>> Ronni
>>>> Sent from Ronni's iPad4
>>>> 
>>>> 
>>>>> On 14 Apr 2017, at 11:11 am, Peter Hinchliffe <[email protected]> 
>>>>> wrote:
>>>>> 
>>>>> Another option I’ve used to great effect for many years is PDFCompress. 
>>>>> I’ve been using it since the old MacOS Classic days, and it works as well 
>>>>> now as it did then. You can find it at 
>>>>> 
>>>>> http://www.metaobject.com/Products/
>>>>> 
>>>>> It’s not free, but it’s extremely efficient and fast, and in 99% of cases 
>>>>> the compressed result is indistinguishable from the original. It does not 
>>>>> modify the original in anyway, and I’ve had occasions where a PDF many Mb 
>>>>> is size has been reduced to as many hundred Kb, with, as I say, no 
>>>>> appreciable loss in quality. I’ve tried many other options over the 
>>>>> years, but always come back to PDFCompress if I want the best results. 
>>>>> 
>>>>> 
>>>>> 
>>>>>> On 14 Apr 2017, at 10:39 am, Ronni Brown <[email protected]> wrote:
>>>>>> 
>>>>>> Hi Peter,
>>>>>> 
>>>>>> You can Reduce File Size in Preview App.
>>>>>> Reduce File Size is alluring, but beware if you have images other than 
>>>>>> photos in your document. 
>>>>>> When you use Reduce File Size, Preview uses lossy compression to reduce 
>>>>>> the quality of every image in the document, making non-photos notably 
>>>>>> fuzzy. Photos see a quality reduction too, but the effects are less 
>>>>>> noticeable. 
>>>>>> 
>>>>>> Reduce File Size has improved radically from earlier versions of 
>>>>>> Preview, which also deleted useful metadata like a PDF’s table of 
>>>>>> contents.
>>>>>> I would suggest you test on a Duplicate of your PDF first, to see if you 
>>>>>> are happy with the result.
>>>>>> Open the PDF, then choose File > Export.
>>>>>> Click the Quartz Filter pop-up menu, then choose Reduce File Size.
>>>>>> 
>>>>>> 
>>>>>> <https://www.hamrick.com/vuescan/html/vuesc33.htm#outputpdfsizereduction>
>>>>>> In VueScan Output
>>>>>> Output | PDF size reduction
>>>>>> 
>>>>>> You can use this option to write files with a reduced number of pixels. 
>>>>>> For instance, if size reduction is set to 3, then every 3x3 block of 
>>>>>> pixels in the image will be written as a single pixel, which is the 
>>>>>> average of these 9 pixels.
>>>>>> 
>>>>>> This option will reduce the resolution and size of the file produced. 
>>>>>> These values will be displayed in the status area at the bottom of the 
>>>>>> VueScan window.
>>>>>> 
>>>>>> However, this option produces better results than reducing the 
>>>>>> resolution of the scan, as the averaging of multiple pixels results in a 
>>>>>> similar noise reduction benefit as multi-sampling. See Input | Number of 
>>>>>> samples and Input | Number of passes.
>>>>>> 
>>>>>> 
>>>>>> Cheers,
>>>>>> Ronni
>>>>>> 
>>>>>> 13-inch MacBook Air (April 2014)
>>>>>> 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz
>>>>>> 8GB 1600MHz LPDDR3 SDRAM
>>>>>> 512GB PCIe-based Flash Storage
>>>>>> 
>>>>>> macOS Sierra 10.12.4
>>>>>> 
>>>>>>> On 13 Apr 2017, at 8:05 pm, Rob Phillips <[email protected]> 
>>>>>>> wrote:
>>>>>>> 
>>>>>>> Hi Peter.
>>>>>>> The Pro version of Adobe Acrobat lets you do this, but you might not 
>>>>>>> want to pay for this.  Maybe the free Acrobat Reader does this...
>>>>>>> 
>>>>>>> Rob
>>>>>>> 
>>>>>>>> On 13/4/17 4:15 pm, Peter Curtis wrote:
>>>>>>>> Hi all
>>>>>>>> 
>>>>>>>> I’m using VueScan for some documents which I need to email to another 
>>>>>>>> person on their phone. I scan as .pdf yet the file sizes are large 
>>>>>>>> (3.5MB) for a 12 page document. I’ve looked through the settings and 
>>>>>>>> preferences on ViewScan and can’t see any way of reducing the size. Is 
>>>>>>>> this size normal for a 12 page document? Is there any way I can reduce 
>>>>>>>> the size of the .pdf?
>>>>>>>> 
>>>>>>>> Kind regards
>>>>>>>> Peter
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> -- The WA Macintosh User Group Mailing List --
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>>>>> 
>>>>> Peter Hinchliffe        Apwin Computer Services
>>>>> FileMaker Pro Solutions Developer
>>>>> Perth, Western Australia
>>>>> Phone (618) 9332 6482    Mob 0403 046 948
>>>>> --------------------------------------------------------------------
>>>>> Mac because I prefer it -- Windows because I have to.
>>>> -- The WA Macintosh User Group Mailing List --
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>>> 
>>> ____________________________________________________
>>> 
>>>              Assoc Prof R Severin Crisp, FAIP, FIP, CPhys
>>> 15 Thomas St, Mount Clarence, Albany, 6330, Western Australia
>>>                   ph (08) 9842 1950 ( Int'l +61 8 9842 1950)
>>>                            mail to: [email protected]
>>> ____________________________________________________
>>> 
>>> 
>>> 
>>> -- The WA Macintosh User Group Mailing List --
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