wowPDF

Annotate a PDF Online

Add simple highlight annotations to PDF documents quickly.

PDF Tools Auto-delete files Free

Upload & run

Drag & drop your file here
or click to browse
Accepted: .pdf

Tip: Choose a PDF first, then open the editor to visually place text and annotations.

Files are processed temporarily and deleted automatically after conversion.

How this Annotate PDF Online works

  1. Upload your .pdf file.
  2. Run the tool to process your document.
  3. Download the result instantly. Files are auto-deleted.

Upload your file, run the tool, then download the result instantly. We process files in a temporary workspace and delete them automatically after the output is created.

FAQ

What annotations are supported?
This version supports rectangle highlight annotations.
Can I add comments or notes?
Text comments can be added in future versions.
Does annotation change the content?
No. Annotations are layered on top of the PDF.
Is this PDF annotator free?
Yes — you can annotate PDFs online for free.
Do you store my files?
No. Files are deleted after processing.