PDF Remediation Platform (PREP)
PREP: An AI-Powered PDF Remediation Service
PREP by Continual Engine is a web-based (SaaS solution) PDF remediation tool that allows you to correct inaccessible PDF documents and generate an accessible version. Visit the Get help section for more information about how to use the platform. Please note, PREP is not a PDF authoring tool.
Features
Ensure that your document is finalized before starting the remediation process.
- Provides automatic identification of document zones, read order, and tag structure
- Speed sup the remediation process with automatic tagging for commonly used items, including headings, lists, and tables
- Reveals document's tag structure errors
- Contains screen reader preview and accessibility checker for PDF evaluation
- Enables PDF owner to manually adjust read order and tag structure as needed
- Export the finalized document to generate an accessible PDF or HTML version for download and sharing
When the document is ready select export. The PREP Tool will generate an accessible PDF or HTML version that you can download and share.
Designed for
- Electronic document and content authors
- Marketing and communication teams
- Online document publishers
Data security
This platform is intended for low-risk and moderate-risk data, as defined on the Stanford Risk Classifications page. There is also a "permanent delete" function to remove your files from Continual Engine's servers.
Rates
- Free of charge to those with a valid SUNet ID
Get started
The PREP Tool is a web-based SaaS solution that will fix PDF accessibility issues. It is not a PDF authoring tool (such as Adobe Acrobat or Preview). You will need a PDF authoring tool if you wish to make content or structural changes to your document.
Visit the PREP Tool Login page and select the "Sign In" button.
You will be directed to Stanford’s Single Sign-On screen to enter your credentials.
After authentication, choose the PREP Tool option to enter to the platform.

Get help
- Select "PREP Resources" from the navigation menu in the PREP Tool and then select "PREP Training" to explore their remediation course and PREP user guide.
- View the PREP Frequently Asked Questions page.
- Visit Continual Engine's YouTube Channel for PREP Demo Training Videos.
- Explore the Continual Engine's Videos Page for tutorial videos and other resources.
- You can also access recordings of PREP Tool trainings
