OneClickPDF

Annotate and Mark Up a PDF for Review

Last updated: February 24, 2026

Reviewing a PDF — a contract draft, a design proof, a student paper, or a technical document — requires marking it up with notes, highlights, arrows, and corrections. OneClickPDF's editor lets you add all these annotations directly on the PDF without installing any software.

The Problem

You're reviewing a document and need to add feedback — highlight important passages, draw arrows to problem areas, add text notes with corrections, and mark sections that need attention. You don't have Adobe Acrobat and don't want to print, markup by hand, and scan.

How It Works

1

Open the Edit PDF tool

Go to OneClickPDF's Edit PDF tool.

2

Upload the document for review

Drop the PDF onto the upload zone. It opens in a full-page editor.

3

Add your annotations

Use highlights to mark important passages. Add text boxes with your comments and corrections. Draw arrows pointing to specific issues. Use rectangles to outline areas that need attention. Choose colors to categorize your feedback.

4

Send the annotated PDF

Download the marked-up PDF and send it back to the author. All annotations are embedded in the document.

Edit PDF

Add text, images, shapes, and links directly onto PDF pages.

Try It Free

Frequently Asked Questions

Can I use different colors for different types of feedback?
Yes. Each annotation element has its own color setting. Use red for errors, yellow for highlights, green for approvals — or any system that works for your review process.
Can I annotate specific pages?
Yes. Navigate between pages using the thumbnail sidebar and add annotations to any page independently.
Are annotations removable by the recipient?
Annotations are added as overlay elements on the PDF. If you want them to be permanent and uneditable, flatten the PDF after annotating.
Can multiple people annotate the same document?
Each person can open the PDF, add their annotations, and save. To consolidate, merge the annotated versions or review them separately.

Document review is faster and clearer with visual annotations. Highlights, arrows, text notes, and shapes communicate feedback more effectively than margin scribbles — and the annotated PDF is ready to share instantly.

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