Reduce file size with lossless compression in your browser.
PDF or drop files here
Privacy: everything runs in your browser — files never leave your device.
Our free PDF compression tool reduces file sizes using lossless optimization techniques—primarily by stripping hidden metadata and recompacting the PDF structure. Unlike image compression that degrades quality, this "lite" compression maintains 100% visual fidelity while removing unnecessary embedded data like creation timestamps, software version numbers, and editing history. All processing happens locally in your browser for complete privacy.
Expected reductions: 10-30% for metadata-heavy PDFs (scanned documents, exported presentations), 5-15% for clean PDFs. For aggressive lossy compression (potentially 50-90% smaller but with quality tradeoffs), consider rasterization tools or desktop software.
Squeeze large reports under email size limits without quality degradation or conversion to ZIP files.
Optimize PDFs for faster downloads on websites, blogs, or online course platforms.
Reduce storage costs for cloud backups or document management systems with thousands of PDFs.
Strip PowerPoint export metadata for cleaner, smaller PDF slide decks.
Typically 10-30% for metadata-heavy PDFs from scanners or Office exports. Files with minimal metadata may see only 5-10% reduction. This is lossless compression—no quality degradation.
Yes! This tool only removes hidden metadata and optimizes structure. Zero quality loss. Every pixel, font, and vector graphic remains identical. For lossy compression (trades quality for size), use image-based tools.
Creation/modification dates, author names, software version numbers, and internal edit history. The title, subject, and keywords fields can optionally be preserved if needed via our Rename PDF tool.
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