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Reduce PDF file size online. Remove metadata and optimize structure to compress PDFs.
Click or drag & drop a PDF file
Max file size: 50MB
How it works
Reduce PDF file size online. Remove metadata and optimize structure to compress PDFs.
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Click the upload area or drag and drop a PDF file you want to compress. The tool accepts PDF files of any size for processing.
The compression process begins automatically after upload. The tool removes unnecessary metadata, duplicate resources, and optimizes the internal structure of the PDF.
Review the compression results showing the original and compressed file sizes along with the percentage reduction achieved.
Download the compressed PDF file. The optimized document is ready for sharing via email, uploading to websites, or storing to save disk space.
Large PDF files are difficult to share via email (most providers limit attachments to 10-25MB), slow to download from websites, and consume unnecessary storage space. Compression reduces file size while preserving content quality, making PDFs practical for everyday use.
Websites and platforms often impose file size limits for PDF uploads. Compressing your PDFs ensures they meet upload requirements for government portals, job applications, insurance claims, and online forms without needing to split documents.
All compression happens in your browser. Financial documents, medical records, legal contracts, and other sensitive PDFs are processed locally on your device and never uploaded to any server.
Storage optimization is important for organizations handling thousands of PDF documents. Even modest compression (20-30% reduction) across a large document library can save gigabytes of storage space.
Compressed PDFs load faster in web browsers and PDF readers, improving the experience for anyone viewing the document.
PDFs with many high-resolution images benefit most from compression. Documents that are primarily text will see smaller reductions since text data is already very compact.
Always verify the compressed PDF by opening it and checking that all pages, images, and formatting appear correct before deleting the original.
For maximum compression, consider reducing image quality separately using an image compressor before embedding images in your PDF.
If the compressed file is still too large, consider splitting the PDF into smaller sections using our PDF Split tool.
Compression results vary based on content. PDFs with embedded high-resolution images can often be reduced by 40-70%. Text-heavy documents with minimal images typically see 10-25% reduction. PDFs that have already been optimized may see minimal additional compression. The tool shows you the exact savings after compression so you can decide if the result meets your needs.
This tool focuses on lossless optimization techniques: removing unnecessary metadata, eliminating duplicate embedded resources, and optimizing the internal structure. These methods reduce file size without affecting visible content quality. Text, vectors, and page layout remain identical. For image-heavy PDFs, some image resampling may occur, but the visual impact is minimal.
Yes. All compression processing happens entirely in your browser using client-side JavaScript. Your PDF file is never uploaded to any server, never stored in any cloud, and never transmitted over the internet. This makes the tool safe for confidential documents including financial statements, legal contracts, medical records, and personal identification documents.
Encrypted or password-protected PDF files may not compress effectively since the encryption prevents the tool from accessing and optimizing the internal structure. For best results, remove the password protection before compression and re-apply it afterward if needed.
Since processing happens in your browser, the maximum depends on your device's available memory. Modern computers with 8GB+ RAM can typically handle PDFs up to 100MB. Mobile devices may be limited to smaller files. For very large PDFs, processing may take longer but will complete on most modern devices.
The compression preserves the document's visible content and structure. Accessibility features like tagged elements, reading order, and alternative text for images are maintained. However, if you are working with accessibility-critical documents, always verify the compressed output with an accessibility checker to confirm all features are preserved.
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