Compress PDF
Try to reduce a PDF file size by rebuilding and optimizing it locally in your browser. Your file is not uploaded to TinyToolbox.
Honest note: this works best for PDFs with inefficient structure or unused data. It may not shrink already-optimized PDFs or image-heavy scans.
Private PDF compressor
This tool rebuilds your PDF with object-stream optimization and removes some editable structure. It is useful for quick size checks before emailing or uploading a document.
Are my files uploaded?
No. The PDF is read and saved inside your browser using a local PDF library from TinyToolbox assets.
Why did my PDF not get smaller?
Some PDFs are already compressed. Scanned image PDFs usually need image recompression, which can reduce visual quality. This private tool avoids risky server upload and gives you a safe first compression attempt.