annotate pdf: arthize vs pdf24 →
Annotate PDF: Arthize vs PDF24
Updated July 2026
To annotate a PDF, Arthize offers a free, private annotate pdf with no watermark — a focused alternative to PDF24. 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 PDF24
PDF24 is a free PDF toolset with web and desktop apps. PDF24 is a free, ad-supported toolkit available in the browser and as a Windows desktop app.
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.
- Files are processed inside your private Arthize workspace and deleted after the job — never sold or used to train models.
- 50+ tools live in one workspace, so you don't jump between single-purpose pages.
- A modern, unified web workspace rather than separate utilities.
- Transparent pricing: free forever, Pro from $6/mo or $48/yr, and a one-time $149 lifetime option.
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 PDF24 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. PDF24 is a solid free option, particularly its Windows desktop app for offline use.
- 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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