How to Edit a PDF Online Free — Add Text, Highlights & Shapes
Adobe Acrobat costs $20/month for full editing. But for most editing needs — adding notes, highlighting key passages, marking up documents for review, filling blank fields — free browser-based tools work just as well. PDFBro's Edit PDF tool handles annotations, text additions, and shapes without any software installation.
Free Online Tool
Edit PDF
Add text, highlights, and shapes to any PDF
How to Edit a PDF in 3 Steps
- 1
Upload your PDF
Upload the PDF you want to edit or annotate. Files up to 100 MB are supported.
- 2
Add your edits
Use the toolbar to add text labels anywhere on the page, highlight regions with colored rectangles, or draw shapes. Each element can be moved and resized.
- 3
Download the edited PDF
Click Download to save your annotated PDF. Your edits are permanently embedded in the document.
What You Can Edit in a PDF for Free
Free PDF editing covers annotation-level changes — adding new content on top of the existing PDF:
Add text: Place text labels, headings, or notes anywhere on any page. Choose font size and color.
Highlight/markup: Draw colored transparent rectangles to highlight important sections, mark errors, or indicate areas for review.
Shapes: Add rectangles, lines, and other shapes for visual annotation.
Signatures: Add handwritten or typed signatures via the Sign PDF tool.
What's NOT included in free editing: replacing existing text within the PDF body, reflowing paragraphs, or changing embedded fonts. For those, convert to Word first, edit, then convert back.
Annotating PDFs for Document Review
Document review is one of the most common PDF editing use cases. Legal teams, editors, and designers regularly annotate PDFs before sending them back.
Best practices for PDF annotation:
Use color-coded highlights: Red for errors, yellow for 'needs review', green for approved sections. Establish a color convention with your team before sharing.
Add text callouts: Place text boxes with brief explanations near highlighted areas ('See comment #3', 'Fix spacing here').
Number your annotations: Add small numbered labels at each point so you can reference them in a separate feedback document.
Pro Tips
- 1
For contracts requiring edits, use highlight + text note annotations to show proposed changes rather than altering the original text.
- 2
Combine Edit PDF (for markup) with Sign PDF (for final approval signature) in one workflow.
- 3
After editing, compress the PDF if annotation images have significantly increased file size.
Frequently Asked Questions
Can I change the original text in a PDF?
Free tools like PDFBro's Edit PDF allow annotations (adding new content on top). To change existing body text, convert to Word, edit, and convert back to PDF.
Will my edits be permanent?
Yes. Annotations are flattened into the PDF when you download, making them a permanent part of the document.
Can I edit a scanned PDF?
You can add annotations on top of scanned PDFs. To edit the actual text in a scanned PDF, use OCR first to make it text-searchable.
Is PDFBro's Edit PDF tool free?
Yes. All annotation features are completely free with no signup.