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Drag and drop your PDF file or click to select it. The tool shows the current file size before optimization.
Set the image quality level to balance file size and visual quality. Enable image compression for maximum size reduction.
Click "Optimize PDF" and see exactly how much space you saved. Download the smaller file.
Your files never leave your device. All optimization happens in your browser using WebAssembly — no server uploads.
No registration, no file limits, no watermarks. Optimize as many PDFs as you need, completely free.
Goes beyond image compression: removes metadata, eliminates unused objects, and restructures internal PDF data. Text remains crisp and selectable. This is structural cleanup, not quality reduction.
Web publishing — optimize PDFs before embedding on websites or uploading to a CMS; linearized files load the first page instantly without waiting for the full download
Email attachments — reduce report and presentation file sizes to stay under corporate email attachment limits (typically 10-25 MB)
Archiving — clean up exported PDFs from InDesign or Illustrator that contain bloated embedded color profiles, ICC profiles, and unused fonts before long-term storage
Mobile viewing — smaller optimized PDFs open faster and use less storage on mobile devices, improving readability on phones and tablets
| Format | Description | Best For |
|---|---|---|
| Image-heavy PDFs | PDFs with embedded photos | Maximum optimization (50-80% reduction) |
| Software-exported PDFs | From Word, InDesign, etc. | Removing bloated metadata and unused objects |
| Scanned documents | Large image-based PDFs | Significant size reduction while preserving readability |
Use Optimize for PDFs exported from design tools — they often contain unnecessary metadata
For maximum reduction, run both Compress PDF and Optimize PDF on the same file
The tool removes metadata automatically, so back up your original if you need that data
Test the optimized file to make sure all content looks correct before deleting the original
Optimizing a PDF — cleaning its internal structure and preparing it for fast web view — can be done two ways: in your browser (like FyleTools) or by uploading the file to an external service.
FyleTools optimizes your PDF entirely in your browser using WebAssembly and the lopdf library compiled from Rust. The optimizer compresses embedded images, strips unnecessary metadata, removes unused objects, and restructures the PDF's internal cross-reference table for efficient access. This is the same kind of structural cleanup performed by professional tools — done entirely on your device. Your document never leaves your browser, making it safe for financial reports, legal documents, and personal files.