Merge PDF files online
Combine multiple PDFs into one document online. Arrange your files in the right order, merge them in PaperFlow, and download a single PDF to share.
Online PDF tools
Compress PDF files online
Reduce PDF file size for email and sharing. Choose compression settings in PaperFlow, check the result, and download a smaller PDF when possible.
Create an account to use the PDF workspace. No desktop installation needed.
Make documents easier to share
Large scans and image-heavy PDFs can be difficult to email or upload. Compression can reduce their size, with a tradeoff between image detail and file size. Already optimised files may not shrink much.
How to compress a PDF
Upload a PDF
Sign in or create an account, then add the PDF to your workspace.
Choose compression settings
Open the compress tool and choose settings that balance file size and readability.
Check and download
Compare the output size and inspect text and images before downloading the result.
A few things to know.
Will compression affect quality?
It can. Stronger compression may reduce image detail. Review the result, especially if your PDF contains small text in scans or detailed graphics.
Why did my PDF barely shrink?
Some PDFs are already compressed or contain mostly text. The reduction depends on the source file and the settings you choose.
Can I keep the original document?
Keep a copy of your source file. Download the compressed result separately so you can return to the original if you need higher quality.
More PDF tools
Split PDF files online
Split a PDF into separate documents online. Choose where to divide your file in PaperFlow and download the resulting PDFs for sharing or organising.
Convert PDF files online
Convert PDFs and other document or image formats in PaperFlow. Choose an available output format, review the converted file, and download your result.
Organise PDF pages online
Reorder PDF pages in PaperFlow and use page tools to rotate or remove pages. Review your document in the workspace and download the updated PDF.