A little love
for every PDF.
Merge, split, compress and watermark your PDFs in a few clicks. Free to use, no account needed, and your files stay on your device.
Everything you need to tidy up a PDF
Choose a tool and get straight to work. No confusing menus, no account wall.
Merge PDF
Bring several PDFs together and arrange them into one clean file.
Merge PDFs →Split PDF
Pick page ranges and save each section as a separate PDF.
Split a PDF →Compress PDF
Make a smaller, easier-to-share PDF with a simple quality setting.
Compress PDF →Watermark PDF
Add your own text watermark to pages you own or have permission to edit.
Add a watermark →Three steps. Your PDF is ready.
PDFMochi is designed to make everyday document tasks feel straightforward.
Choose a tool
Select merge, split, compress or watermark based on what you need.
Add your PDF
Choose a file from your device. Your document is processed in this browser.
Download the result
Review the result and save it back to your device. That’s it.
Keep your privacy
Your PDF itself is not uploaded to PDFMochi’s server.
Small tips for smoother PDFs
Clear instructions to help you get the result you want.
How to combine PDF files into one document
Arrange files, check the order and save one tidy PDF.
Read guide →SPLIT PDFHow to split a PDF by page range
Separate chapters, forms or selected pages in a few steps.
Read guide →PDF BASICSHow to make a PDF smaller for sharing
Understand the trade-offs before compressing your file.
Read guide →WATERMARK PDFHow to add a repeating watermark to a PDF
Tile a text label or your logo across selected pages and tune the spacing.
Read guide →COMPRESS PDFHow to compress a PDF for email
Reduce a large attachment and understand what the output keeps and changes.
Read guide →MERGE PDFHow to merge PDF files on your phone
Combine documents from your mobile file picker and check their order.
Read guide →Frequently asked questions
Are PDFMochi tools free to use?
Yes. The tools on this site are free to use and do not require an account.
Are my PDF files uploaded?
No. File processing runs in your browser. The site loads its PDF processing libraries from a content delivery network, but your selected PDF is not sent to PDFMochi.
Does compression always make a PDF smaller?
No. The compress tool rebuilds pages as images, which can reduce some large scans but may increase small or already optimized files. Text selection, links and accessibility tags are not preserved in the compressed output.
Can I use the tools on my phone?
Yes. PDFMochi is designed for phone and desktop screens. Large files may take longer on older devices.