如何减小PDF文件大小

如何縮小PDF文件大小

方法1 -利用Adobe打印文件打印驅動程序

The easiest way to try and shrink a PDF file is to perform a little trick, which basically is printing the PDF document to a PDF file.最簡單的方法，試圖縮小PDF文件是執行的小動作，這基本上是打印PDF文件為PDF文件。Sounds strange?很奇怪？It is.它是。Basically, you open the PDF file in Adobe Reader and print it to the Adobe PDF printer.基本上，您打開PDF文件的Adobe Reader和打印到Adobe PDF打印機。

A lot of time this works really well and will significantly reduce the size of your PDF file.還有很多的時間這確實很好，而且將大大減少的大小您的PDF文件。When you go to File – Print, choose Adobe PDF from the drop down list of printers:當你去文件-打印，選擇的Adobe PDF從下拉列表中的打印機：

Amazingly enough, I've been able to shrink a 20 MB PDF file down to 3 MB just by using this method.令人吃驚的是，我已經能夠縮小一個20 MB PDF文件下降為3 MB只需使用此方法。Not really sure what it does to shrink it, but it works, especially if you have a good number of images that are eating up a lot of space.不太遠的將來它縮小，但它工作，特別是如果你有一個好的形象數目是吃了很多的空間。

Method 2 – Use Adobe Acrobat PDF Optimizer方法2 -使用的Adobe Acrobat PDF優化

Since version 7 of of Adobe Acrobat, there is a new option in the Advanced menu called PDF Optimizer.由於第7版的Adobe Acrobat，有一個新的選擇在高級菜單中調用PDF格式優化。

Now you'll be brought to a screen that has a whole bunch of options to configure!現在你帶到一個屏幕，有一大堆的選項來配置！

Click on the Audit space usage button in the top right to get a detailed listed of each component of the PDF file and exactly how much space it is using:點擊審計空間使用按鈕，在右上角獲得詳細列出了每個組件的PDF文件，這也正是它的空間使用：

As you can see, there are six different things you can do to make a PDF file smaller including optimizing or down-scaling images, reconfiguring scanned pages, adjusting fonts, adjusting transparency, discarding objects, and cleaning up the PDF file.正如你所看到的，有6個不同的事情可以做，使較小的PDF文件，包括優化或向下縮放圖像，掃描頁面重新配置，調整字體，調整透明度，丟棄對象和清理PDF文件。

Under Images, for example, you can downsample and compress the images to save space.根據圖像，例如，您可以降低採樣率和壓縮的圖像，以節省空間。This is really useful, especially if your images are at a really high resolution that is not needed.這是很有用，特別是如果您的圖片是在一個非常高的決議是沒有必要的。For view on the screen, you only need 72 pixels.至於在屏幕上查看，你只需要72像素。

If you scanned a bunch of pages into your PDF, then click on the Scanned Pages option and mess

around with the sliding bar, which goes from Small Size to High Quality.如果你一堆掃描到您的頁面PDF格式，然後點擊網頁上的掃描選項和食堂周圍的滑動桿，這正好由小尺寸的高品質。Adjust as needed.根據需要進行調整。

The Discard Objects and Discard User Data are two really useful cleanup options for PDF files.在放棄對象和放棄用戶數據是兩個真正有用的清理選項PDF文件。You can basically get rid of all the extra junk that is normally stored in every PDF file.你基本上可以擺脫所有額外的垃圾通常是存儲在每一個PDF文件。You can remove tags, flatten form fields, etc.您可以刪除標籤，扁平化表單域，等

For Discard User Data, you can get rid of comments, document information, metadata, object data, file attachments, data from other applications, and more.對於放棄用戶數據，你可以擺脫的意見，文件資料，元數據，對象數據，文件附件，數據從其他應用等。

Finally, the Clean Up tab does a few more housekeeping tasks like compressing the entire file and optimizing the PDF for fast web view.最後，清理選項卡上做了幾個內務處理任務如整個文件壓縮和優化的PDF快速Web視圖。

The best thing to do is to play around with all the settings to see what works best for your particular PDF file.最好的事情做的是玩弄的所有設置，看看最適合你的特定的PDF文件。Enjoy!享受！