PDF Compressor

Reduce your PDF file size quickly and securely, right in your browser.

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Compression Stats

0
Files Optimized
0 Bytes
Total Space Saved
0%
Average Reduction

Optimization History

    Why Optimize PDFs?

    Faster Sharing

    Smaller PDFs upload and email faster, saving time.

    Secure & Private

    Files stay in your browser – no server uploads needed.

    Save Storage

    Keep device or cloud storage tidy with smaller files.

    Common Questions

    How does PDF optimization work here?

    This tool uses the pdf-lib library to load and re-save your PDF. This process primarily optimizes the internal structure and can remove some redundant data, potentially reducing file size. It focuses on lossless techniques, preserving text and vector quality.

    What types of PDFs benefit most?

    PDFs created by various software or scanners that might not have optimized structures can often see size reductions. PDFs that are already highly optimized might not shrink much further.

    Is there a file size limit?

    Processing occurs in your browser, limited by your device's memory. Very large PDFs (e.g., over 100MB) might process slowly or cause issues. We recommend processing large files individually.

    Will this reduce image quality?

    No, this tool performs lossless optimization. It does not re-compress or downsample images in a way that reduces visual quality. Text and vector graphics remain sharp.

    Is my data secure?

    Absolutely. Your PDF file is processed entirely within your web browser using JavaScript. It is never uploaded to any servers, ensuring complete privacy.

    Where is the history stored?

    Optimization history and statistics are stored locally in your browser's `localStorage`. Clearing your browser data (cache, site data) will remove this history.

    Is this service really free?

    Yes, this tool is completely free to use for optimizing your PDF files directly in your browser.