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How to Compress PDF to 300KB Online and Offline

To compress a PDF to 300KB for the purpose of sharing online or uploading to a website, it’s important to know the different methods. For instance, one way to do this manually is to remove high-resolution images and other heavy content that makes a PDF bulky. Unfortunately, doing this might not be the ideal solution if you want to retain all the content. The better option is to compress PDF to 300KB online or use an offline PDF utility. This article showcases both online and offline tools that can compress PDF to under 300KB without losing too much quality.

How to Compress PDF to 300KB Online

How to Compress PDF to 300KB Offline

How to Compress PDF to 300KB Online

The three tools to compress PDF online to 300KB or less mentioned in this section run on the browser as web applications. The advantage of using such services is that you won’t need to download anything on your PC. Just launch a new browser window or tab and follow the steps shown under each of these utilities.

#1: Wondershare HiPDF

HiPDF was designed as a free tool for PDF compression, editing, conversion, security, OCR, and other tasks. No sign-in or subscription is required if you’re processing one file at a time, and the compress PDF to 300KB online process can be executed in just a few seconds.

hipdf compress pdf to 300kb

  • Go to the HiPDF Compress PDF web page and upload your PDF file by dragging and dropping it in the browser tab. You can also use the button to upload files or fetch them directly from a cloud storage service such as Google Docs.
  • Next, choose the compression level that will bring the file size down to 300KB. For large files, use the High level, and so on.

compress pdf to 300kb hipdf

  • When you have chosen the compression quality/level, click Compress and wait a few seconds, then click Download or proceed to other actions.

compressing result hipdf

Other actions include sharing the compressed file directly with someone online or processing it further using conversion, editing, and other modules. The advantage of using HiPDF is that the compression process does not make the content unreadable or illegible; it simply optimizes the individual sizes of the various elements of the PDF, such as images, text, graphics, and anything else that takes up space. What’s more, even if you want to process PDFs in batches with a paid subscription, this option is cheaper than using another premium online PDF compression tool.

#2: Adobe Acrobat Online

Another efficient online PDF compression tool to optimize file size is the web service from Adobe. The conversion engine used is the same as the one in the desktop version but this one’s more convenient because you won’t need to sign up if you’re just optimizing one file at a time and don’t require any other related service. This is how it works:

acrobat compress pdf online

  • Go to the website for the Adobe Acrobat online file compression tool and upload your file.

acrobat compressing degree

  • Select the appropriate file compression level.

acrobat compressing result

  • Click Download to save the file to your desktop.

The downside to using this PDF compression tool from Adobe is that you cannot directly perform another action on the output PDF unless you have a subscription and you’re signed in. This will set you back about $15 every month, which is why a lot of users prefer simply using the free online compression part of this tool.

#3: ILovePDF

This powerful file optimization tool is yet another online PDF compression service that you can consider when you want to compress PDF to less than 300KB without installing any software for this purpose.

compress pdf tool ilovepdf

  • Visit the ILovePDF URL for file compression and import your PDF document by dropping it there or using the Select PDF File button.
  • Choose the compression level in the panel on the right side of your screen.

compressing degree ilovepdf

  • Click Compress PDF and wait for the compression to be completed.

compressing result ilovepdf

  • If the download doesn’t happen automatically, you can click the Download Compressed PDF button on the final page to trigger it manually. Alternatively, you can use the other tools for file conversion, adding watermarks, and so on.
  • Save the file to its target location to complete the process.

As we saw with HiPDF, you can use other PDF tools from the download page, giving you a full-fledged file optimization experience.

How to Compress PDF to 300KB Offline

There are also numerous offline tools with powerful compression engines that can compress PDFs to less than 300KB without losing too much clarity and image quality. The first one here has also been developed by Wondershare, the company behind HiPDF and several other blockbuster products.

#1: PDFelement

Wondershare PDFelement - PDF Editor has been designed as a go-to application for all things PDF, including being able to compress PDF to well under 300KB by optimizing the content. In addition, it can also be used for the following:

Wondershare PDFelement Pro DC

Simplify your Workflow with the Document Cloud for PDFelement.

pdfelement pro dc

  • Editing PDFs: Any content in a PDF file can be modified, added, or removed
  • Annotations: Excellent collection of markup tools to review and comment on PDF documents
  • PDF Conversion: A range of conversion options to and from PDF makes this a must-have application
  • PDF Protection: Apply enterprise-grade password security to protect your PDF files
  • Forms: Fill, sign, and create interactive PDF forms with an extensive selection of tools
  • Organize PDFs: Split or merge files, add/remove/extract PDF pages, rotate pages, etc.
  • Advanced PDF Tools: OCR, Batch Process, Form Field Recognition, etc.

The process to compress PDF with PDFelement is as simple as the one for HiPDF since they both use the same compression engine at the back end. Moreover, Wondershare has always been razor-focused on making PDFs simple to handle.

  • Drag and drop a file into the PDFelement interface to open it

compress pdf file pdfelement

  • Click Compress PDF on the welcome page or use the Tool → Compress PDF option in the main menu and toolbar
  • Select the level of compression based on your original file size
  • Click Apply to process the compression

The file that now opens is the compressed one, which you can save to your desktop or share online with others. You can also further process the file using the plethora of PDF tools that come with PDFelement.

#2: Foxit PDF

Foxit offers similar options but the interface is obviously different. Nevertheless, the Advanced Optimization options provide the same flexibility as far as removing content and downsampling images are concerned.

  • Open the file in Foxit using the File → Open menu
  • Next, click File again and choose PDF Optimize in the left panel

compress pdf nitro

  • You can now select Reduce File Size, which uses the default settings of the Advanced Optimization options; alternatively, you can click through to change advanced compression settings.
  • Choose Apply to Current File on the right and then confirm the selection

You can now save the newly compressed file and check its file size to make sure it has been compressed to below 300KB.

Final Thoughts

Unless you’re using a PDF file for web display, you need to be careful not to compress it too much. The danger is that the content may not be clearly legible if the compression level is too extreme. The reason is that the image downsizing/downsampling along with removing embedded fonts, etc. may render the content unreadable. To avoid that, always open the PDF file after compression to make sure the content quality has not degraded too much. Alternatively, you can take a printout of a few pages to make sure the content is visible and legible.

Finally, using a combination of HiPDF and PDFelement gives you the best of online and offline tools to help compress PDF to 300KB on your Windows PC or in the browser. Moreover, PDFelement for Windows is also integrated with Wondershare Document Cloud, which is a PDF storage service that also comes with an electronic signature processing tool for bulk signature collection. This ecosystem of PDF tools allows users to carry their PDF workflows wherever they go by storing them on the cloud and then downloading them on any device to continue working offline using PDFelement. The bundle is a viable and highly affordable alternative to using more expensive services such as Adobe Acrobat DC.

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