Editor-first PDF work
Add highlights, text, shapes, and visual notes in one accessible annotation workspace for review and study.
A welcoming PDF workspace
PDF Annotation Editor
Use MassPDF for PDF annotation editor in a clear browser workspace. Upload a document, add practical edits, and keep moving without installing desktop software.
FreeBrowser-basedNo installEasy editingSecure workflow
Open the PDF editor
Upload a PDF, add text, highlight details, place images, and keep edits moving in one focused workspace.
A laid-back modern UI
MassPDF keeps the workspace calm and direct, with accessible controls for text, highlights, annotations, shapes, images, and page review.
Secure browser workflow
Upload a PDF in a modern browser, make visual changes, save account drafts with Google sign-in, and prepare the final document in one focused flow.
MassPDF can help with
- Use MassPDF to add comments visually
- Use MassPDF to use highlights and shapes
- Use MassPDF to mark review documents
- Use MassPDF to organize feedback