Compress PDF Online for Free
Reduce PDF file size in your browser. Choose your compression level and download the processed PDF.
Upload Your PDF File
Select a PDF document to get started. Maximum file size: 25 MB.
Choose Compression Level
Preparing PDF...
Compression Complete
Your PDF is ready.
The size change shown is calculated from the actual generated file. A compressed PDF may occasionally be larger than its original.
Free Online PDF Compressor
Need to reduce a PDF file before sending it by email, uploading it to a website or sharing it online? AjazMD PDF Compressor lets you process a PDF in your browser and download a new version. Select a compression level that suits your quality requirements.
How to Compress a PDF
- Click the upload area and select your PDF file.
- Choose Light, Recommended or Strong compression.
- Click the Compress PDF button and wait for processing.
- Compare the original and new file sizes.
- Download the compressed PDF to your device.
Choose the Right PDF Compression Level
Light: Uses higher image quality and may be suitable when visual clarity matters.
Recommended: Offers a middle setting for image quality and output size.
Strong: Uses more aggressive image compression to try to reduce file size further.
The actual reduction depends on the original PDF. No fixed percentage reduction is guaranteed.
Does Compressing a PDF Affect Quality?
Yes, this version renders PDF pages as images and uses JPEG compression. This can reduce image-heavy documents, but fine text may become less sharp. The resulting pages may not support normal text selection or search, and interactive elements may be lost. Always review the downloaded file before sharing it.
Is My PDF Uploaded to a Server?
This widget processes the PDF in your browser using JavaScript libraries. The PDF file itself is not sent to an AjazMD server by this code. The PDF processing libraries are loaded from public CDNs, so an internet connection is required to load them.
Frequently Asked Questions
Is this PDF compressor free?
Yes. This browser-based widget can be used without creating an account or entering an API key.
Will it always reduce PDF size?
No. Some PDFs are already optimized, and the new file may be larger. Compare the displayed file sizes after processing.
Can I compress scanned PDFs?
Image-heavy scanned PDFs may benefit from image recompression. Results depend on page dimensions, original image quality and selected compression level.
Will text remain selectable?
This version converts each page to an image, so text will generally no longer be selectable or searchable in the output.
Is there a file size limit?
This widget accepts files up to 25 MB. Large or lengthy documents may require significant browser memory.