Complete PDF Editing Guide - How to Add Signatures, Checkmarks, and Drawings to PDF

Need to sign a PDF or add checkmarks but don’t have the right software? After reading this guide, you’ll be able to easily add signatures, checkmarks, drawings, and text without complex PDF editing programs.

No installation required. No login needed.

Use it directly in your browser! From contract signatures to checklist completion, your document work will become much more convenient.

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Real-World Use Cases

Office Worker Kim Drew a signature directly on a contract PDF and marked consent items with checkmarks.

Student Lee Typed answers into the problem PDF from the professor and highlighted important parts like a highlighter.

Freelancer Park Added comments as text to the client’s proposal PDF and marked sections needing revision with X marks.

Job Seeker Choi Uploaded a signature image to the application PDF and completed all checkboxes with checkmarks before submission.

How to Edit PDF (3 Steps)

Step 1: Upload PDF

Drag and drop or click the “Upload PDF” button. Supports files up to 100MB.

Step 2: Select Tool

Choose from checkmark, X mark, signature, drawing, or text. You can freely change colors with 14 preset colors + custom color picker.

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Step 3: Edit and Download

Click to add at desired locations and press the “Save PDF” button! The edited PDF will be downloaded automatically.

iTool vs Other Tools

Feature	Online Tools	Adobe Acrobat	iTool
Price	Free~Paid	$15/month~	Completely Free
Size Limit	10~20MB	Unlimited	Up to 100MB
Security	Server upload required	Software installation	Browser processing
Editing Tools	Limited	Professional	5 tools provided
Installation	Not required	Required	Not required

Key Features

5 Annotation Tools Provides checkmark, X mark, signature (draw + image upload), drawing, and text tools. You can also freely move the PDF with the hand tool.

Various Color Options 14 preset colors (black, red, blue, etc.) + custom color picker for your desired colors. Different colors can be applied to each tool.

Text Formatting Freely select font type (Nanum Gothic, Nanum Myeongjo, Times New Roman), size (8~72), bold, italic, and underline.

Drawing Options Adjust line thickness in the 1~20px range with thin, medium, thick buttons or slider.

Zoom Control Zoom adjustment in 10% increments from 50% to 200%. Fit to width for perfect screen fit, and drag to move with hand tool.

Free Editing Move all elements by dragging, resize to adjust size. Accidentally added elements can be immediately deleted with Delete key or delete button.

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Related Recommended Tools

• PDF Merge - Combine multiple PDFs and images
• PDF Split - Split PDF by pages
• Delete PDF Pages - Remove specific pages

Start iTool PDF Editing now to easily handle everything from contract signatures to document annotations!