Convert & OCR
OCR that never sends your scans to a server.
Most OCR services want you to upload the document. If the scan is a medical record or a privileged file, that upload is the problem. CompendiumPDF runs recognition on your own computer and writes an invisible text layer over the image, so the page looks identical but becomes searchable.
5 users per license · local processing, no upload · Windows and browser

Convert: Word, Excel, text, images and searchable OCR.
What is CompendiumPDF?
CompendiumPDF is a PDF editor for Windows and the browser that reads, edits, builds, converts, redacts, protects and signs PDF documents on your own computer. OCR, conversion and redaction run locally, so your files aren’t uploaded anywhere. One license costs $25 a month and covers 5 named users.
How it works
- Recognition runs on your own machine, using a bundled engine — nothing is uploaded
- English, Spanish, French and German
- Roughly two to six seconds per page, depending on the page and your computer
- An invisible text layer over the image, so the page looks identical but becomes searchable
What it does
Everything happens on your computer
Convert
Export to Word, Excel, plain text and images. Build PDFs from images. Everything runs locally.
Protect
AES encryption with open and permissions passwords, granular permissions, metadata sanitizing, and redaction that genuinely removes content.
Edit and build
Change text in place, add text and images, headers, footers, watermarks, backgrounds and Bates numbering. Build PDFs from images or from scratch.
Pricing
$25 a month covers 5 users
Prepay a year for 5% off, up to 40% off for five years. The AI assistant is optional at $5 per user per month.
Questions, answered
Where does the OCR run?
On your own machine, using a bundled recognition engine. Nothing is uploaded, which is what makes it usable on medical records and privileged documents.
Which languages does the OCR support?
English, Spanish, French and German.
How fast is the OCR?
Roughly two to six seconds per page, depending on the page and your computer.
Does CompendiumPDF upload my documents?
No. Opening, editing, OCR, conversion, compression and redaction all run on your own computer. The only time a document is transmitted is if you explicitly send it for signature through Compendium Sign.
What does it cost?
One license is $25 a month and covers five named users, which works out at about $5 per person. Prepaying a year takes 5% off, and five years takes 40% off. An optional AI assistant is $5 per user per month.
Does it work offline?
Yes. The Windows application is fully offline. It checks its license every 45 days, and if it can’t reach the internet it keeps working normally within that window.
What happens if I stop paying?
The application drops to read-only. You can still open, read, search, annotate and print every document you have. You’re never locked out of your own files.
Can I use it in a browser?
Yes. There’s a browser version that runs the same engine, so the PDF is still processed on your device rather than on a server.
Is CompendiumPDF a drop-in replacement for Acrobat Pro?
Not for every workflow. It covers about 43% of Acrobat Pro’s published feature list, concentrated in editing, page operations, forms, OCR, redaction, conversion and signature. It doesn’t yet do accessibility tagging, prepress and preflight, batch automation or Office-format import.
How is redaction different from drawing a black box?
A black box leaves the original text in the file, where it can still be extracted. CompendiumPDF converts the affected pages to images so the underlying text is destroyed rather than hidden.
Get started
Buy a license and set up your account in one pass, then download the installer. One installer covers CompendiumPDF, CompendiumWP and Compendium LECX, and installs without administrator rights.
$25 a month · 5 users per license · read-only, never locked out, if you cancel