PDF Editor & Annotator — Text, Highlight, Draw & Shapes
Edit and annotate PDF documents directly in your browser with no file uploads required. Add text, highlights, shapes, and drawings to any PDF — all processing happens client-side using JavaScript, so your files never leave your computer. Perfect for sensitive documents, quick markups, and form filling with complete privacy guaranteed.
The common alternative is uploading a document to a web editor, which is exactly the wrong move for the documents people usually need to annotate: contracts, invoices, medical forms, tenancy agreements. Here the file is parsed and redrawn in the page, and the annotated copy is written locally when you download it. Text boxes, highlights, freehand drawing, and shapes are flattened into the page content, so the markup appears identically in every viewer rather than living in an annotation layer some readers hide by default.
How to use PDF Editor & Annotator
- Upload a PDF file.
- Select an annotation tool (Text, Highlight, Draw, or Shape).
- Click anywhere on a page to place the annotation.
- Download the annotated PDF when finished.
Features
- Add text annotations — Place custom text anywhere on any page.
- Highlight tool — Mark important passages with colored highlights.
- Freehand drawing — Draw directly on the PDF with customizable pen size.
- Shape tool — Insert rectangles with custom border colors.
- Undo and clear controls — Remove the last annotation or clear all at once.
- 100% browser-based — Files never uploaded, complete privacy guaranteed.
Frequently Asked Questions
Can I edit a PDF online without uploading my file to a server?
Yes — UtilHub's PDF Editor & Annotator processes everything client-side in your browser. Your PDF files are never uploaded to any server, making it the most private way to edit PDFs online.
How do I annotate a PDF for free without signing up?
Simply open UtilHub's PDF Annotator, drag and drop your PDF file, and start annotating immediately. No account, no sign-up, and no software installation required. Add highlights, text, shapes, and drawings — then download your annotated PDF.
Is it safe to edit PDFs online?
With UtilHub, all editing and annotation happens entirely in your browser. Your files never leave your device, eliminating any risk of data exposure. It's the safest way to edit PDFs online.
Can I edit the original text in a PDF?
Not in the word-processor sense. A PDF stores positioned glyphs rather than editable paragraphs, so rewriting a sentence would reflow nothing. What you can do is cover the old text and place new text over it, which is what most "PDF editing" actually means. To genuinely rewrite a document, convert it to Word first.
Will my annotations show up in every PDF reader?
Yes, because they are flattened into the page rather than stored as a separate annotation layer. Some readers hide comment layers by default or render them differently; flattened marks are part of the page content and print exactly as they appear on screen.