Home How To Reduce PDF File Size Without Losing Quality

Reduce PDF File Size Without Losing Quality [ Online Tools, Apps ]

“You can’t upload files larger than 25 MB.” Have you ever got this file size error when linking PDF files in your Gmail? Not only that, there are many other reasons when you want to compress a PDF file, for example at the time of uploading some documents to a government website that only accept PDF files smaller than a predefined size.

If you want to send a JPEG image, there are many servers like WhatsApp and Facebook that automatically compress the files of a bigger size. PDF uses a lossless technique to compress files for the purpose of maintaining image quality and important information to keep to original file format intact.

But the good news is you can always compress a PDF file. And the internet is full of PDF compressors. Below you can find the best five methods that could help you compress your PDF files and make them easier to store and share via e-mail.

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Before getting towards the methods, let’s first understand how PDF compression works.

How does PDF Compression work?

As the quality of the PDF is measured in dots per inch (DPI) and to ensure the best quality needed to choose the optimal size. Now, if I have a PDF containing general information only that I will see on my computer screen, 72 DPI is the minimum quality that would ensure the smallest PDF size. E-books usually have between 100 – 150 dpi and are optimal for most text-based PDF files. We recommended you to not to use more than 200 dpi, as most computer screens cannot see them anyway.

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Now let’s take a look at several ways to compress PDF files with the help of different apps and tools.

Reduce PDF File Size Without Losing Quality [ Online Tools, Apps ]


1: Compress PDF in the source of origin

The first and quite obvious solution is that it compresses the files at the time of PDF creation. You can create PDFs on computers and on most smartphones and rarely pay attention to the size. Acrobat Reader has an integrated option to optimize PDF for the Web and automatically adjusts the DPI to get the maximum efficiency.

Adobe Acrobat, Illustrator, and many other apps offer PDF creation due to the versatility of the format when exporting the file to PDF format, you can configure the parameters that can significantly reduce the file size so you don’t have to go back to the PDF compressor. You can reduce the file size as you save by following these steps. Simply, go to File => Export => save for web.

While this allows you to control each and every aspect of compression. However, you can’t always trust this because you don’t always make the pdf, sometimes you only get large PDF files.

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2: Online Tools

When you get the pdf size error, it’s just a tab to compress the files. There are many online PDF compression websites that do it for free. Simply search for the term PDF compressor and click on the first result, really, it’s that simple.

With this, I found PDFresizer.com and the best thing is it also works on smartphones. It offers a number of solutions like converting, splitting, cropping, merging, rotating and resizing. Release the PDF and press the button; the PDF will be loaded and you can choose the quality by adjusting the dpi. Show the compressed size and you can download your compressed PDF file right on your computer.

In accordance with your privacy policy, all uploaded PDF documents are automatically deleted in 1 hour, so you may not want to upload private PDF files to their servers.

PDFresize reached a compression of only 20%, but it also increased the size of a smaller PDF that I tried to compress and that had already been compressed.

Generally, it works well for smaller files where compression is easy, however, quality cannot be really controlled with this method and keep in mind that your data may be at risk.

3: Through PDF Compressor Apps

PDF compressor apps are a very convenient way to compress PDF. These are a well-constructed code that does the job effectively and without any problems. I found a number of apps for each platform and listed the best of the lot for each category. These applications compress their PDFs and optimize for various portals and websites.

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For Windows:

NXpowerlite is a free PDF compression software for Windows that lets you compress up to 95% compression. It has reached a compression level of 72%, which is way better than most software available online, although it guarantees a compression level of up to 95%. 72% is not bad and actually saves a lot of data when you have too many files to compress.

For Mac:

  1. To compress PDF on Mac, you don’t need to download any third-party app. You can use the native preview button.
  2. Start by making a copy of your PDF file (the document will replace the original), then open the PDF in Preview.
  3. Then go to File => Export => from the Quartz filter drop-down menu, select Reduce file size option and click on the Save

For smartphones:

Compress PDF takes mobile tools. It is one of the best apps for Android and iOS. The app lets you instantly compress your PDF files and let you share them via WhatsApp, email and the cloud.

4: Zip multiple PDFs

If there are several projects you are working on and you have a series of files that you need to compress. Instead of compressing each file one by one, you can archive all the files and compress the folder right away. The files would be compressed significantly without losing any data. You can also password protect the Zip file.

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Although the PDF itself can be protected with a password, it is logical to lock down the entire folder rather than each file. There are built-in Zip archiving tools in Windows and Mac, but more advanced tools are available online. WinRar, Rarzilla, and 7-zip are some of the most popular and common file tools available that compress your files easily.

While these tools are available on Windows and Mac, there are many apps for Android and iOS.

When you compress files with ZIP archiver, the files are compressed into a file of about 16 MB, which is not much, but you will have a comparatively faster load than the load of 20 single PDF files.

5: Look for Redundancy

This should not be called a method, but a simple trick that we should take care of. As when creating PDFs, we insert the same file multiple times, which in turn increases the size of the PDF. Check your files for redundancies and useless information that could take up space in your file. While it saves you the trouble of using other methods, it makes no prominent changes.

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So, Did You Find The Best Way To Reduce The Size Of The PDF File?

Every problem has its own solution and sometimes a problem has more than one solution, but the most common solution is to look twice, that is what method 5 concerns the most. Although you can always use online tools, I don’t trust this because of its incomplete interface, although some of them are really good.

I would suggest that if you are creating documents, use Method 1 to compress your files or you can use apps that have been developed specifically for this purpose.

That’s it for today, don’t forget to mention what is your favorite method to reduce pdf file size.

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