annotate pdf: arthize vs pdftk →
Annotate PDF: Arthize vs PDFtk
Updated July 2026
To annotate a PDF, Arthize offers a free, private annotate pdf with no watermark — a focused alternative to PDFtk. Annotating a PDF adds highlights, comments, shapes and notes on top of the page, so you can mark up a document without changing its text.
Arthize's annotate pdf vs PDFtk
PDFtk is a command-line PDF toolkit. PDFtk is a free command-line tool for scripted PDF operations.
Arthize's approach: Annotating a PDF adds highlights, comments, shapes and notes on top of the page, so you can mark up a document without changing its text.
- A visual workspace instead of memorising command-line flags.
- 50+ tools live in one workspace, so you don't jump between single-purpose pages.
- Files are processed inside your private Arthize workspace and deleted after the job — never sold or used to train models.
- Handles conversion, OCR, signing and editing that PDFtk doesn't.
How to annotate a PDF with Arthize
Annotations sit on top of the page and don't change the underlying text.
You can highlight, comment, draw and add notes.
Annotated files are ideal for review and feedback.
How to annotate a PDF with Arthize
- 1
Open the editor
Sign in and open the PDF editor.
- 2
Add your PDF
Upload the document to mark up.
- 3
Add annotations
Highlight text, add comments, draw shapes or leave notes.
- 4
Download
Save the annotated PDF.
Common questions
- Is Arthize a good PDFtk alternative to annotate a PDF?
- Yes. Annotating a PDF adds highlights, comments, shapes and notes on top of the page, so you can mark up a document without changing its text. Arthize does it free with no watermark and deletes the file after the job. PDFtk is excellent for developers automating simple, repeatable PDF tasks from scripts.
- How do I annotate a PDF?
- Annotating a PDF adds highlights, comments, shapes and notes on top of the page, so you can mark up a document without changing its text. On Arthize it's free with no watermark and processed privately.
- Can I highlight and comment on a PDF?
- Annotating a PDF adds highlights, comments, shapes and notes on top of the page, so you can mark up a document without changing its text. On Arthize it's free with no watermark and processed privately.
Related
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