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10 Best Online PDF Compressors to Reduce PDF Size for Free


2023-11-30 16:47:10 • Filed to: Compress PDF Online • Proven solutions

PDF files are one of the most convenient file formats for sharing and storage purposes. However, sometimes PDF files can get bulky, making it cumbersome to store or share via the internet. Online PDF compressor can offer timely solution to such problems, especially considering the technical nature of trying to compress a file without any software. The internet is filled with many free online-based PDF compressors that promise to easily and quickly convert your bloated file. In this article, we look at 5 of the most common tools that can be used to compress PDF online.

Best Online PDF Compressor without Losing Quality

1. HiPDF

HiPDF online PDF compressor offers the simplest interface of all the PDF compression tools on this list. Once you land on their page, you are offered a simple upload link for you to attach your PDF file. After you upload, you can choose one of its compression levels to compress PDF while maintaining the quality. Once the process is done, you receive a download link that lets you access your compressed file.

With HiPDF, you get compression options to play around with and the compression rate is rather high. It is always a favorite among those looking for simplicity.

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2. PDF-Online

This is one of the oldest PDF compressors found on the internet. PDF-Online PDF compressor is widely popular because of its simple interface and functionality. It also offers a handful of advanced compression settings, which include the ability to customize images, fonts, and general structure to compress PDF files online without losing quality. Most of these features are usually available on high-end PDF compression applications, which make this piece of software a favorite among many users.

On the downside, the free online version of PDF-Online embeds watermarks for all converted PDF files. Users must make a purchase to gain access to the full suite of features.

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3. DocuPub

DocuPub online PDF compressor is another popular online tool for converting and compressing PDF files without losing quality. It offers more compression presets for users that are found in premium PDF compression tools. With DocuPub, you can remove elements from PDF files, including fonts and annotations.

DocuPub also allows you to convert documents and merge PDF files, which is an excellent aid for organizing documents. However, as with most online PDF converters, the free versions impose certain limits when compressing. DocuPub limits free compressions to files under 5 Mb.

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4. Acrobat Online PDF Compressor

Acrobat online PDF compressor is another compression tool that takes the simplicity of Compress PDF and integrates it with the versatility and efficiency of DocuPub. This online tool allows you to upload documents from your computer, Dropbox, or Google Drive or drag them onto the interface. Compression is quite fast, despite the absence of advanced features.

To maintain PDF quality while reducing file size, Acrobat online PDF compressor provides three compression rates for you to choose from.

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5. PDF24 Tools Online PDF Compressor

PDF24 Tools is a versatile and user-friendly online platform that offers a PDF compressor designed to reduce the file size of their PDF documents while maintaining exceptional quality. It allows you to adjust compression settings. You can choose different compression levels by specifying a target image quality. You can also adjust the DPI of the PDFfile. Whether you're looking to optimize file storage, streamline document sharing, or ensure smooth uploads to websites and email attachments, PDF24 Tools PDF compressor is your solution of choice.

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Best Online PDF Compressor to 50kb/150kb/300kb

If you need to compress a large PDF files online or compress a PDF to a chosen size, here are some online PDF compressors that can help you.

1. PDF2Go Online PDF Compressor

Maximum file size: 500 MB

PDF2Go's compressor streamlines the compression process, making it easy for users of all levels of expertise. You can quickly reduce the size of your PDF files with just a few clicks. It offers various compression options, allowing you to choose the level of compression that suits your needs. You can strike a balance between file size reduction and maintaining the document's visual appeal. PDF2Go enables you to compress multiple PDF files at once, saving you time and effort.

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2. iLovePDF Online PDF Compressor

Maximum file size: 200 MB

iLovePDF PDF compressor offers a comprehensive PDF compressor tool that provides 3 optimization modes(Recommended, Extreme, and Less) to help you reduce the size of your PDF files efficiently. If you need to compress PDF files in bulk on a regular basis, iLovePDF includes batch-process feature in its Premium version to compress PDF files in batch. You can preview the file size of the compressed PDFs before downloading them.

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3. PDF Compressor

Maximum file size: Up to 20 files, no file size limit

PDF Compressor is a great online PDF compressor for large files since it has no limit in the file size, making it easy for you to compress PDF online to 100MB, 200MB, etc. This is a completely free PDF compressor, which you can reduce file size for free without signing up. It can handles up to 20 files at one time.

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4. 11zon PDF Compressor

Maximum file size: 512 MB

11zon PDF Compressoris a powerful and user-friendly tool designed to help you efficiently reduce the size of your PDF files. Whether you're looking to optimize your PDFs for faster uploading, emailing, or saving storage space, 11zon PDF Compressor provides a range of compression options to suit your specific requirements. You can adjust the compression level from 0 to 100 by a slider. It is free to use so that you can compress files unlimited times with this tool.

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5. Compress2Go PDF Compressor

Maximum file size: 100 MB

Compress2Go.com is a one-stop online file compressor for PDF and images. Whether you're dealing with large documents, high-resolution images, or multimedia files, Compress2Go.com offers a comprehensive compression service that caters to a wide range of file formats. With its intuitive interface and powerful compression algorithms, this platform simplifies the process of optimizing your files for storage, sharing, or emailing.

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Limitations of Compressing PDF Free Online

Despite the many advantages presented by online PDF converters, many versions often present difficulties and limitations for users. Most are slow and inefficient since your file has to be uploaded first, compressed at the server end, and then resent back to you. This process also consumes a considerable amount of bandwidth, which means you must stay connected during the upload. Other issues include file size restrictions, watermarks, and quality issues that come with most converters.

Best Desktop PDF Compression Tool

Downloadable PDF compressors are always the best option when it comes to seamless PDF compression. One of the best desktop-based tools for PDF compression is Wondershare PDFelement - PDF Editor. This essential piece of software offers all the benefits of online PDF compressor and adds tons of other benefits for the everyday user.

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PDFelement is an all-inclusive application that lets you edit, secure, merge, split, delete or insert pages into existing PDF documents. It allows users to select from different preset compression options and compress PDF files at the touch of a button according to your needs. If you are in the mood for some technical tweaking, PDFelement offers you the option of playing around with compression settings for the best results.

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Elise Williams

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