What is this tool?
Reduce the file size of your PDF documents locally using next-generation object stream serialization.
When to use it?
Great for decreasing email attachments, cleaning duplicate stream blocks, or saving drive spaces.
How does it work?
Uses pdf-lib to copy page trees to a new clean container, stripping redundant headers and metadata in local memory.
Example Conversions
Sample Input:
Upload: document.pdf (4.5 MB)
Sample Output:
Download: document_compressed.pdf (3.1 MB - 31% reduction)
Frequently Asked Questions
Will my image resolutions be reduced?
No. The compressor cleans file structures rather than heavily compressing image layers, keeping document readability.
Is there a file size limit?
We recommend uploading PDFs under 20MB for fast in-browser rendering.