Pick multiple PDFs; pages are appended in the order your browser lists them (usually selection order).
Reloads the PDF with pdf-lib and saves with object streams enabled—helpful for some exports; scanned pages won’t shrink much.
PDF merge & compress
Combine PDFs in order, or re-save one PDF for modest space savings—bytes stay in your browser.
Merge PDFs locally
Each file is read as bytes in memory, parsed by pdf-lib, and copied page-by-page into a new document you download. Nothing is transmitted to Nceptia.
Compress expectations
This is not Ghostscript-class compression—it mainly rewrites structure and enables PDF object streams where helpful. Image-heavy PDFs may barely change size.
Frequently asked questions
Will compression shrink every PDF dramatically?
Not always—this tool rewrites the file with pdf-lib; gains depend on how the PDF was built. Image-heavy scans may need desktop OCR/compression tools.
Password-protected PDFs?
Encrypted inputs usually fail to load unless decrypted first.
Are files uploaded?
No—the pdf-lib script loads from a CDN; bytes stay in your tab.
Merge order?
Pages follow the order you picked files in the dialog (browser-dependent). Re-merge if needed.