The Vproof user interface is designed to be easily adopted by new users while also providing the advanced functionality required by power users. Various aspects of the user interface can be controlled by user roles and document settings. Vproof makes it easy to navigate through documents with mouse wheel zooming, marquee panning in the navigation panel, page turning, choosing pages from a thumbnail filmstrip and keyboard shortcuts.

The approval workflow is flexible, with document-based approval and user access control, including ad hoc approval cycles: Vlinks allow users without registered accounts to proof specific documents with an optional password and expiration date. Vproof provides sophisticated annotation features. Users collaborating on the same document see each other's color-coded rectangle, oval or freehand annotations in real-time and can create conversations by replying to or commenting on existing annotations. Convert ink density readings and ruler measurements to annotations with a click. Sort the annotations by page, date or user. Set the time zone and date format for each user to facilitate collaboration around the country and around the world. Users can also hide annotations or show them in a minimized form.

Vproof includes a wide range of advanced proofing features, including the ability to view trim and bleed, rotate the image and measure with rulers and guides. Users can preview color separations including spot colors and take ink density readings. ICC color profiles and white point adjustments can be applied through the integrated Adobe Color Engine. Device Link Profiles are also supported for direct conversion between device color spaces. The print feature allows users to print their current view or the complete page, and to generate a report including file images, approvals and annotations.

Compare mode allows users to see changes between different revisions of their files. They can view annotations that were made on earlier revisions and ensure that corresponding fixes were made to subsequent revisions. The annotation, approval and advanced proofing tools are available for both revisions. Compare provides four viewing modes: Toggle, Difference Only, Difference Overlay and Perceptual Difference, where the changes are highlighted in shades of bright green according to the degree of difference in the changes.

Vproof integrates with Enfocus PitStop for PDF document preflighting and auto-correction. Files are processed based on preconfigured preflight profile settings. Vproof displays the areas of the document that are affected by preflight warnings, errors and automatic fixes.

Vproof has an extensible rendering architecture that can integrate with multiple technologies including the Adobe PDF Library and VDP composition engines such as Printable FusionPro Server.

The Vproof web client is built on Microsoft Silverlight 4 technology with advanced caching algorithms for a refined user experience. The server-side components employ pre-rendering with scalable, distributed processing engines. There is also a system monitor and reporting mechanism for managing optimal performance.