PDF Optimizer

How this "Optimization" Works:

This tool uses the pdf-lib JavaScript library to process your PDF entirely within your browser. Currently, it performs a basic "re-save" operation:

• The PDF is loaded and its internal structure is parsed by pdf-lib.
• The library then reconstructs and saves the PDF.

This re-saving process itself can sometimes lead to a smaller file size if the original PDF contained inefficiently structured data, unused objects, or certain types of unoptimized elements that pdf-lib implicitly cleans up or restructures more efficiently during its save routine.

However, this tool does not currently implement advanced compression techniques like image re-compression, font subsetting, or removal of complex graphical elements. Therefore, the file size reduction might be minimal, and in some cases (e.g., if the PDF was already highly optimized or uses compression methods pdf-lib doesn't replicate by default), the "optimized" file could even be slightly larger. True PDF optimization often requires more sophisticated algorithms.