Your documents. One browser workspace.
Open PDFs, Word documents and Excel files. Read, annotate, edit and export — directly in your browser.
PDF · DOCX · XLSX · TXT
Free · Browser-based · No installation
Everything on the page, nothing in the way.
Open anything
PDF, DOCX, TXT and Excel (.xlsx) all open in the same viewer.
Annotate freely
Highlights, notes, shapes, and pen — kept in sync with the source.
Edit spreadsheets
Browse and edit .xlsx sheets with formulas preserved on export.
Real editing
Rewrite paragraphs in DOCX, not just scribble on top.
Export clean
Download flattened PDFs or updated DOCX/XLSX in one click.
Search & navigate
Page controls, zoom, fit-to-width and full-text search for PDFs.
How Marginal works
- Step 1
Open a document
Drop in a PDF, DOCX, TXT or XLSX file — it opens directly in the browser.
- Step 2
Read, annotate or edit
Highlight, add notes and shapes, or rewrite text and spreadsheet cells.
- Step 3
Find your way around
Jump between pages, zoom, fit to width and search the text of a PDF.
- Step 4
Export your work
Download a flattened PDF or an updated DOCX/XLSX in one click.
Who is Marginal for?
Students
Mark up lecture notes and readings, then export a clean annotated copy.
Professionals
Review contracts and reports, edit DOCX text and fix spreadsheet numbers fast.
Researchers
Highlight papers, keep notes beside the source and extract tables for analysis.
Everyday users
Open a file someone sent you, make the change and send it back — no installs.
Frequently asked questions
Which file formats does Marginal support?+
PDF, DOCX, TXT and Excel (.xlsx) files all open in the same workspace.
Can I annotate PDFs?+
Yes — highlights, notes, shapes and freehand pen, kept in sync with the page.
Can I actually edit DOCX files?+
Yes. You can rewrite paragraph text in DOCX documents, not just draw on top of them.
Can I edit spreadsheets?+
You can browse and edit .xlsx sheets, and formulas are preserved when you export.
Does Marginal work on a phone?+
Yes. The workspace is responsive: the toolbar wraps, page navigation stays reachable and the annotation panel collapses so the document gets the screen.
Can I search inside a PDF?+
Yes — search the document text, see how many matches there are and step through them one by one.
How do I get my file back out?+
Export a flattened PDF or an updated DOCX/XLSX directly from the workspace.
Do I need to install anything?+
No. Marginal runs entirely in the browser — just open the workspace and load a file.