BlogPDF tool
How to edit a PDF online: add text, draw, and highlight
Use the free Edit PDF tool to add text, freehand drawings, rectangles, and highlights to any PDF page. Everything runs in your browser — no upload, no sign-up needed.
Edit any PDF directly in your browser
Need to annotate a contract, mark up a report, or fill in a form field? The Edit PDF tool lets you add text, draw, highlight, and place shapes on any page of a PDF — entirely in your browser.
How to use
- Open Edit PDF.
- Drop your PDF onto the upload area, or click to browse.
- Select a tool from the toolbar:
- Text — click anywhere on the page and start typing. Choose font size, color, and bold.
- Draw — freehand drawing with adjustable stroke width and color.
- Rectangle — drag to draw an outlined rectangle.
- Highlight — drag to add a semi-transparent highlight area.
- Navigate pages with Prev / Next buttons and annotate every page you need.
- Click Export edited PDF to download the final file with all annotations burned in.
Toolbar features
| Feature | Description |
|---|---|
| 7 color choices | Black, red, blue, green, amber, purple, pink |
| Font sizes | 12px to 48px for text annotations |
| Bold toggle | Switch between regular and bold text |
| Stroke width | Adjustable drawing line thickness (1–10) |
| Undo | Remove the last annotation on the current page |
| Clear page | Remove all annotations from the current page |
What you can do
- Fill in form fields — place text exactly where you need it.
- Sign documents — draw a signature with the freehand tool.
- Mark up reports — highlight sections and add comments.
- Redact content — place a filled rectangle over sensitive text.
- Add notes — type annotations next to existing content.
Privacy
Your PDF is processed locally in your browser. The file is rendered using PDF.js and annotations are applied with pdf-lib — no data leaves your device.
Tips for best results
- Zoom your browser for precision on small text or detailed drawings.
- Use Shift+Enter for multi-line text in a single annotation.
- Press Escape to cancel a text input without committing it.
- Undo removes the last annotation on the current page only. Switch pages to undo annotations on other pages.
FAQ
Can I edit existing text in the PDF?
The tool adds new annotations on top of the PDF. It does not modify or delete the original text. To obscure existing text, use a filled rectangle or highlight.
Does it support forms with fillable fields?
The tool does not interact with PDF form fields directly. Instead, use the text tool to place text visually over form areas.
Can I edit a password-protected PDF?
You need to unlock the PDF first using Unlock PDF, then open the unlocked copy in the editor.
Is there a page limit?
The editor supports up to 30 pages per PDF to keep browser memory usage manageable.
Can I add images to the PDF?
Not yet. Currently the tool supports text, freehand drawing, rectangles, and highlights.
Related tools
- PDF Page Editor: reorder pages by dragging thumbnails.
- PDF Merger: combine multiple PDFs into one.
- PDF Compressor: reduce file size after editing.
- Protect PDF: add a password after editing.
- Word to PDF: convert Word documents to PDF.
- PPTX to PDF: convert presentations to PDF.