PDF Annotation Software for Teams
Annotate, review, and approve PDF files directly in the browser. Pin feedback to exact locations. No downloads. No Acrobat. No email attachments.
PDF Annotation — Key Facts
- Pin comments to any exact location on any PDF page
- Highlight, draw shapes, freehand markup on PDF content
- Automatic version control — every revised PDF is tracked
- Side-by-side PDF comparison to verify changes were made
- Formal PDF approval with timestamped sign-off
- No PDF download required — annotate directly in browser
- Supports single-page and multi-page PDFs of any size
- Complete thread history of all PDF comments and decisions
What is PDF Annotation Software?
PDF annotation software is a tool that allows teams to review PDF documents in a browser, mark specific locations with typed comments, drawn shapes, or highlights, and collect formal approval sign-offs — all without sending email attachments or requiring Adobe Acrobat.
Annotica is PDF annotation software built for creative teams. Unlike single-user PDF tools, Annotica enables multiple reviewers to annotate simultaneously, tracks every version of the PDF, threads conversations on each annotation, and creates a formal approval record.
PDF Annotation Features in Annotica
Pin Comments to Any Location
Click anywhere on a PDF page to drop a pin and leave a comment. Comments are spatially anchored — reviewers see exactly what you're referring to.
Draw, Highlight & Markup
Use drawing tools to mark rectangles, freehand lines, arrows, and text highlights directly over PDF content. Perfect for design corrections.
Multi-Page PDF Navigation
Review multi-page PDFs with a thumbnail sidebar. Jump to any page. All annotations across all pages are visible in one consolidated comment feed.
Version-by-Version Comparison
Upload a revised PDF as a new version. Use the drag-slider to compare old and new side-by-side and verify every correction was implemented.
Threaded Comment Discussions
Reply directly to any annotation. Every thread is preserved with timestamps. Never lose track of what was discussed about any PDF change.
Formal PDF Approval Workflow
Assign Approvers who must formally approve or request changes. Final approval is recorded with a timestamp — creating a legally defensible sign-off.
Who Uses Annotica for PDF Review?
PDF Annotation FAQ
Can multiple people annotate the same PDF at the same time?
Yes. Multiple reviewers can annotate the same PDF simultaneously in Annotica. All annotations are visible to all reviewers in real-time and organized in a shared comment feed.
Do reviewers need to create a Annotica account?
No. Reviewers can access PDFs via a shared review link without creating an account. Guest access is free — your clients and stakeholders don't need a paid seat.
What PDF file sizes does Annotica support?
Annotica supports PDFs of any size, including large multi-page print-ready PDFs and high-resolution artwork files. Files are streamed in the browser without downloading.
Try PDF Annotation Free for 14 Days
Upload your first PDF and start annotating in minutes. No credit card required.