The Rixoffice PDF Editor is a desktop PDF workspace that renders documents with PDF.js and edits them with pdf-lib and pdfium — a combination that means fast, faithful rendering on screen and real structural edits in the file. You use it when a PDF needs to change: fix a typo, sign a contract, fill a form, stamp an approval, renumber a document set. It runs fully locally, opens password-protected files, and keeps a working copy as you go.
Open your first PDF
- Open the PDF Editor from the Rixoffice Home screen, or open a .pdf file directly — it lands in its own tab.
- If the document is encrypted, the editor asks for the password, unlocks it locally and remembers it for the session.
- The document renders immediately, page by page, in the main view.
- Everything from here — text edits, annotations, signatures — happens on your machine. No upload step exists.
Autosave keeps a working copy of your session, so a crash or an accidental close does not discard an hour of annotation. Ctrl+S (Cmd+S on Mac) writes the file itself.
Choose your page view
Reading and editing need different optics, so the view controls offer three layouts:
| View | What it shows | Best for |
|---|---|---|
| Single page | One page at a time | Focused editing, form filling |
| Two page | Side-by-side pages | Reading flow like a printed document |
| Spread view | Facing pages as one continuous layout | Checking books, brochures, report layouts |
Switch views at any time — your scroll position follows you. Night mode darkens the workspace for late reading sessions, and the canvas adjusts so annotations stay legible.
Navigate with thumbnails, outline and search
Three panels find your place in any document:
- The thumbnail rail shows every page as a miniature — click to jump, and watch your position highlight as you scroll.
- The outline panel follows the document's bookmark tree, which is how structured PDFs (reports, manuals, books) are meant to be navigated. Click an entry to land on that section.
- Search (Ctrl+F) finds text across the whole document, with every match highlighted and counted, so you can step through occurrences one by one.
Between the three, even a 400-page PDF is a few clicks wide.
What you can do from here
The editor's tools stack on top of this foundation:
- Edit text in place — fix blocks and lines with font, size, bold and italic control. See the text editing guide.
- Edit images — insert, replace, rotate, transform or delete images, above or below the content.
- Annotate — highlight, underline, strikeout, sticky notes, shapes and ink, with comment notes for review threads.
- Sign — draw, type or upload a signature and place it anywhere.
- Stamp and watermark — preset and custom stamps, text watermarks with angle and opacity control.
- Fill forms — complete interactive form fields: text fields, lists, checkboxes.
- Operate on pages — rotate, delete, extract, insert pages from another PDF, and edit metadata.
- Ask the AI assistant — more than 20 tools that read the PDF locally.
Each has its own guide in this section; the getting-started page is the map.
Save, autosave and fidelity
PDF editing respects the document's structure: text edits and page operations write real PDF objects, annotations follow the PDF annotation model so other readers (Acrobat, browsers) display them, and forms fill their actual field values. That is the practical meaning of editing with pdf-lib and pdfium — the output is a standard PDF, not a re-rendered approximation.
| Moment | What happens |
|---|---|
| While you work | Autosave maintains the working copy |
| Ctrl+S / Cmd+S | Changes write to the file |
| File, Save As | Save to a new path or name |
What to explore next
- Edit text in a PDF for in-place text fixes.
- Annotations for highlights, notes and markup.
- Page operations for rotating, extracting and merging pages.
- PDF support in Rixoffice for how PDFs flow across the suite.