Security
Local processing
Merge PDF and the page organizer tools run on the browser side. PDF.js uses a bundled local worker for page previews, and pdf-lib creates the result as a Blob download. PDFflow does not provide a backend document-processing service in this version.
Limits and unsupported files
Local processing depends on browser memory and device resources. The organizer currently limits one PDF to 50 MB and 200 pages. Encrypted or password-protected documents are not bypassed.
Complex PDF behavior
Creating a new PDF can affect digital signatures, document-level bookmarks, attachments and some interactive forms. Keep the original document and review important output files after processing.
Try the tools
- Compress a PDF
Shrink scanned and photo-heavy PDFs to send them by email.
- Merge PDF files
Combine several PDF files into one document.
- Convert JPG to PDF
Turn photos, scans and screenshots into one PDF.
- Split PDF
Split one PDF into separate files by page range.
- Redact a PDF
Black out sensitive text so it cannot be copied or recovered.
- Check a PDF for hidden data
Find metadata, attachments and hidden text, then download a clean copy.