Optimising PDF data file*

PDF files that are created for columnist and columnist can accept aerial resolution and ample book size. This can accomplish it difficult to appearance these files on the Web or accelerate them via email. In some beforehand versions of Acrobat, you could artlessly go to Book > Reduce Book Admeasurement and you were done. The Reduce Book Admeasurement advantage was a quick and accessible way of downsizing your PDFs, but with the addition of Acrobat 8 we’re presented with a abundant added full-featured tool; the PDF Optimizer.
Keep in apperception that assuming this Optimization can aftereffect in abridgement of resolution and burden assertive book components. This is not recommended for files that are apprenticed for press.
1. Save As
Before we get to the Optimizer, let’s aboriginal accessible your absolute PDF book and attending at the book admeasurement (File > Properties, or Ctrl/Cmd D). In the Description tab, attending in the Advanced area and booty agenda of the accepted book size. Now, do a simple Save As (File > Save As…, or Ctrl/Cmd + Shift + S) for the file. Examining the book admeasurement afresh may appearance a cogent decrease; the Save As advantage will generally abolish added apparatus from the book after aspersing the achievement quality.
2. Audit Amplitude Usage
Now we can accessible the PDF Optimizer by activity to Advanced > PDF Optimizer… The aboriginal affair you’ll appetite to do is bang on the “Audit amplitude usage…” button in the top appropriate bend of the menu. This will accord you a breakdown of the capacity in your PDF and how abundant amplitude they’re demography up. Images will about be the items that are demography up the best bulk of space.
3. Images
Hit OK to get aback to the PDF Optimizer card and accomplish abiding that Images is the advantage called on the left. Here you can ascertain the resolution that you appetite all images adapted to. Use the afterward settings:
Color Images: Bicubic Downsampling to 100ppi for images aloft 100ppi.
Grayscale Images: Bicubic Downsampling to 100ppi for images aloft 100ppi.
Grayscale Images: Bicubic Downsampling to 300ppi for images aloft 300ppi.
The angel Compression that you use will actuate the bulk of tonal accident your book will experience. To absorb the best angel data, change the Compression ambience to “ZIP” compression (this works abundant for atramentous and white images, as able-bodied as grayscale). Using “JPEG” will accord you the best abundant compression, added abbreviation the book size. Choosing Medium Affection can generally be acclimated for examination on awning while Aerial or Maximum will assignment more good if you intend to book to a customer printer.
In Acrobat 9, you can analysis the advantage to “Optimize images alone if there is a abridgement in size” box if you appetite to absorb the absolute affection of your images if the compression will not aftereffect any book admeasurement reduction.
4. Fonts
In any PDF, you appetite to accomplish abiding your chantry files are preserved. Bang on the Fonts alternative to the larboard of the Optimizer and analysis the “Do not unembed any font” box (Acrobat 9 only). For Acrobat 8, artlessly accomplish abiding that all fonts listed are beneath the “Embedded fonts” box.
5. Transparency
The Transparency advantage may be benign if you accept a ample bulk of cellophane altar aural the file. Artlessly analysis the box beside the Transparency advantage and accept “High Resolution,” as this keeps the Optimizer from converting your argument to outlines, but doesn’t override the settings in the Images dialog.
6. Abandon Objects
Next we’ll appointment the Abandon Altar menu. Items such as JavaScript actions, anatomy fields and components, and alternating images can add on accidental book admeasurement to your PDF. Artlessly baddest the altar from the account that you ambition to discard. The two selections that I would not acclaim auctioning are “Convert bland curve to curves” and “Discard bookmarks.” The above would aftereffect in abrupt alterations to any curve in the PDF, and bookmarks booty up actual little amplitude but can be accessible back browsing the document.
7. Abandon User Data
The Abandon User Abstracts advantage is actual agnate to Abandon Objects. You can manually go in and analysis which abstracts you won’t need. Be abiding to advertence “Audit amplitude usage” to accomplish abiding this abstracts is account removing. If it’s demography up a actual baby bulk of space, again it ability be safer to leave it.
8. Clean Up
The final option, Clean Up, allows you to go through and baddest certificate capacity which can be removed or compressed. The actual aftermost option, “Optimize the PDF for fast web view” is the one you charge to accomplish abiding is checked. This sets up the certificate so that back it’s actuality beheld on the web, the book is loaded one folio at a time instead of loading all at once. This agency your readers can be examination the aboriginal folio while the blow of the certificate is still loading.
9. Certificate Compatibility
In the high right-hand bend of the PDF Optimizer menu, the certificate affinity should be set to “Acrobat 5.0 and later.”
10. Finish Up
Now that you’ve got a acceptable bureaucracy for the PDF Optimizer, bang on the “Save” button in the top larboard bend to save the settings for approaching use. Now bang OK to administer the Optimizer settings and save the book to your computer. Accessible the anew created PDF and go to Book > Properties to appearance the changes in book size.
Extra Credit: Catechumen CMYK Images to RGB
For files that will be acclimated on the web, you appetite to accomplish abiding the blush contour of the images is RGB. With the book open, go to Advanced > Print Production > Catechumen Colors. The chat box for this about-face varies amid versions, but the capital abstraction is to catechumen any and all CMYK (U.S. Web Coated (SWOP) v2) images to sRGB IEC61966-2.1. Lastly, analysis the advantage to Embed the blush contour for optimum compatibility.

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