Compress PDF Online
Reduce PDF file size quickly and easily. Choose your preferred compression level and create a smaller PDF directly in your browser.
To compress a PDF without uploading to a server: 1) Drag or browse your PDF file into the dropzone below. 2) Choose your compression level (Low for quality, Medium for balance, or High for maximum size reduction). 3) Click Compress PDF. PortalResizer processes your file 100% locally in your browser memory for complete confidentiality.
In-Browser PDF Compressor
Select a PDF file and choose your desired compression level.
Choose Compression Level
How to Compress a PDF
Select your PDF
Click Select PDF and choose the document you want to reduce in size.
Choose compression
Choose Low, Medium or High compression depending on your needs.
Download
Your compressed PDF will be generated and downloaded to your device.
Free PDF Compressor
Large PDF files can be difficult to upload, email or submit through online application portals. PortalResizer's PDF compressor helps reduce the size of a PDF so it is easier to share or upload.
Select your PDF and choose from three compression levels. Low compression aims to retain more image quality, while higher compression focuses on creating a smaller file.
The tool works directly in your browser, so you can process your document without creating an account or uploading it to a PortalResizer server.
When Should You Compress a PDF?
Government Applications
Reduce a PDF when an online government portal requires a specific maximum file size.
Job Applications
Make documents smaller when an application portal limits the size of uploaded files.
Email Attachments
A smaller PDF can be easier to send as an email attachment.
Online Document Uploads
Compress documents before uploading them to websites with file-size restrictions.
Which PDF Compression Level Should You Choose?
| Level | Best For | Priority |
|---|---|---|
| Low | Documents where quality is important | Quality |
| Medium | General document sharing | Balance |
| High | Strict file-size limits | Smaller size |
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Frequently Asked Questions
How can I compress a PDF online?
Select your PDF file, choose a compression level, and PortalResizer will process the document directly in your browser.
Is the PDF compressor free?
Yes. PortalResizer's PDF compressor is free to use and does not require registration.
Can I reduce PDF size for a government form?
Yes. You can use the compressor when you need to reduce a PDF to meet an upload-size requirement on an online application.
Are my files uploaded?
The PDF is processed directly in your browser. Your file does not need to be uploaded to a PortalResizer server.
Which compression level is best?
Low compression is useful when maintaining quality is more important. Medium provides a balance, while High focuses more on reducing the resulting file size.
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