PDF Compressor Online
Reduce your PDF size in a few clicks.
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From Google Drive
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From Dropbox
or drop files here
How to compress PDFs?
Follow these steps to compress and download your documents online.
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1 Choose your file and upload it to compress
Drag and drop your PDF file—or upload it from your device, Dropbox or OneDrive—into the convert box to start compressing your PDF.
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2 Select the level of compression
Regular compression reduces your file size to an estimated 40%, which preserves good quality. Alternatively, to gain maximum space or send an email, high compression up to 85% is ideal.
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3 Start the compression process
After choosing the level, click on Compress file, then wait a few seconds.
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4 Download your PDF file
Click on Download file to this device to get your zipped file and be ready to share it.
Why choose Soda PDF as a PDF compressor?
Whether you’re a professional in search of efficiency or an individual looking for simplicity, our tools offer you a variety of options to optimize your work. You can edit, convert, merge or compress your files online. Word, JPG, PNG, Excel, PPT, SVG… Our web application takes charge of each format and proposes real software, but without installation!
With cutting-edge technology, our converter compresses your documents while preserving their quality. Within seconds, your PDF files are ready to send by email, download or get quickly transferred. Compressing, editing or converting files with Soda PDF guarantees the perfect balance between efficiency and simplicity.
Benefits of our PDF compressor online
Choosing our PDF size reducer is a no-brainer!
No installation, all online
Whether you’re new to tech or a seasoned developer, our PDF compressor is for everyone. No software to install—the magic happens online, right in your browser. Compressing a PDF takes just a few clicks, on PC, Mac, or mobile.
Two compression levels to get smaller files
Need to reduce PDF size? Our high compression mode can shrink your document by up to 85%. Perfect for emailing, uploading to the web, or mass archiving.
Data security
No compromises when it comes to privacy. All your files are TLS encrypted during processing and are deleted afterward. Upload, download, and your data stays confidential.
Works on any device
Phones, tablets, computers—choose to compress PDFs from any device. No browser discrimination here. If you have a file to shrink, that’s the tool you need.
Access everywhere
Out of the office? Our tool goes where you go. No matter the device, all features stay the same. No internet? No problem. Our desktop app covers you to work offline.
Small file, big quality
Our cutting-edge technology analyzes your document to apply compression where it’s important, without changing the content. Text stays readable, and your images are optimized to keep their visual charm. Note that images do become blurred if compressed a lot.?
Soda PDF's awards
Soda PDF has gained valuable recognition as a member of the PDF Association and for earning multiple SourceForge badges, most recently including “Leader for Summer 2025” and the famous "Customers Love Us" badge. These achievements highlight our dedication to product quality and strong customer appreciation.
FAQ about PDF compressor?
Want to know more? Compress a PDF quickly with our compression tool.?
Why compress PDF files??
Because smaller files are easier to manage! Compressing your PDFs helps reduce PDF size—easier to email, frees up storage space, and speeds up transfers. Fast and effective. What’s not to love???
How does the PDF compression work??
Our PDF compressor tool dives into your file, detects optimizable elements (heavy image, text, layout) then applies the best compression strategy: image recoding or streamlining structure. All of this happens automatically. Lighter, and faster PDF without lifting more than a finger.?
Will compression affect the quality of my PDF files?
Our technology is designed to preserve the visual integrity of your PDFs. Text stays readable, images are optimized, and interactive elements (like video) remain intact. If your document contains lots of visuals, we recommend choosing the regular compression (-40%) to maintain the highest quality.
When should I choose regular compression (-40%)?
This level is great when you want to reduce PDF size without having to choose between reducing and images or visual quality. Ideal for a professional and sharp look for your presentations, reports, or image-rich documents.
When should I use high compression (-85%)?
Looking for more space? The high compression level is for you. Perfect for archiving or emailing large files. But keep in mind that your visuals may have a slight drop in quality. It’s better to keep high compression for documents that don’t need detailed visuals.
Can I compress a password-protected PDF?
For privacy reasons, password-protected documents must be unlocked before compression. At Soda PDF, we never bypass security settings—it goes both ways.
How can I check the size of my PDF?
When you drop your file in the convert box, its original size will be displayed. After compression, you will see the new document size and the percentage of reduction. Clear, quick, and very helpful.
Is the PDF compressor free?
Yes, it is! You can compress up to 2 PDF files per day for free, with a size limit of 3?Mb. No account required, and your documents keep their original glow. No logos, no watermarks added.
What other tools does Soda PDF offer?
Soda PDF is way more than just a compressor—it’s an all-in-one online PDF toolbox. Many features are available for free* (with daily usage limits). It’s easier than ever to manage documents! With our online app, you can:
- Convert Word, Excel, PowerPoint (PPT), PNG, SVG or JPG into PDF, and the other way around
- Compress even your largest documents in seconds (hundreds of pages? No problem!)
- Merge multiple PDFs or split pages as you like
- Edit text, images, or layout with our editing tool
All of this is entirely online, no downloads or installations needed. Find our tools in the top menu or down in the footer (yes, that’s what it’s called).
And if I work offline?
No worries! The good news is our PDF tools are also available as a desktop version for Windows. That means you’re covered wherever you work.
*Size and daily usage limitations: file of 3 Mb or less/2 files per day.
