Comment on a contract, highlight a report or annotate your reading material. Save a PDF to keep or share your notes.
Files are opened and processed on your device, with no document upload or account required.
How it works
- Click Open your PDF to launch the editor in your browser.
- Pick a .pdf file from your device, or drag and drop it onto the page.
- It renders locally with the OnlyOffice PDF engine — read it, search it, add comments and annotations.
- Download it again as PDF when you are done; your annotations are merged into the file locally.
What you can do
- Open and read .pdf file — text, scans, forms, multi-page reports
- Add comments and free-text annotations, then save back as PDF
- Create a PDF from a DOCX, XLSX or PPTX with Download as PDF
- No Adobe Acrobat, no Reader, no account, no Copilot
- Local files are opened, edited and converted on your device, without a document-processing server. The source code is public for inspection and self-hosting.
- Try the features you need while online, then use what your browser has saved offline. Opening files from links still needs a connection.
Frequently asked questions
Can I open a PDF without Adobe Acrobat?
Yes. It opens PDF directly in your browser with the OnlyOffice PDF engine — no Acrobat, Reader or account.
Is my PDF uploaded anywhere?
No. When you open local files directly on this site, viewing, editing and conversion happen on your device without uploading your documents.
Can I annotate the PDF, not just read it?
Yes. Add comments and free-text annotations, then save back as a PDF that keeps them.
Can I rewrite the text of an existing PDF like a Word document?
Not as free-flowing text — PDF is fixed-layout. Read, comment and annotate here; to change wording, open the original DOCX/XLSX and export a new PDF from it.
Can I create a PDF from a Word or Excel file here?
Yes. Open the DOCX, XLSX or PPTX and choose Download as PDF — the PDF is generated on your device.
Does it work offline?
Yes, with some preparation. Open the files you need online and try editing and exporting, then disconnect to check they work. Clearing browser data may require reconnecting. Files opened from links need a connection.
Is there a file size limit?
No fixed limit. Everything runs in your browser, so the practical ceiling is your device's memory.