Let every QR in your book open a video explained by your teacher
No studio, shooting or editing: from the print-ready PDF to video solutions. Thousands of questions per book, in your teacher's voice.
How it works
- 1
Send the book
Upload the print-ready PDF or question images.
- 2
Videos are prepared
Every question is solved step by step in the teacher's voice and the answer key is checked.
- 3
Print the QR codes
A permanent watch link and a QR list for every question, delivered on your print schedule.
Why publishers use it
- No shooting or editing costs; every question in a book is ready within days
- One voice and one look across the series: your own teacher or a ready-made teacher voice
- Permanent watch links: QR codes keep working after the book is printed
- Answer key check: catches key errors before printing
How delivery works
The folder and test structure mirrors your book's sections. For each test you get an Excel sheet with question numbers, watch links and MP4 download links; your typesetting team generates the QR codes straight from that list.
What you can do with Visolv
Frequently asked questions
Can we publish on our own platform?
Yes. Download the MP4s and publish them in your own app, or use Visolv watch links.
Are the QR links permanent?
Yes. Links stay open for the book's print life; they can be time-limited if you prefer.
Can we use our own author's voice?
Yes. Your author's or teacher's voice is prepared from a clean 20-second recording.
How does the pre-print answer key check work?
Questions that don't match the key are returned to you as a list before printing.
Whose voice narrates the videos?
A teacher's voice is prepared from a clean 15–30 second recording you upload in the panel. If you don't upload one, Visolv's ready-made teacher voice is used.
Which files can I upload?
Test booklet PDFs with a text layer, single question images (JPG, PNG) and exam papers as PDFs or phone photos. Scanned, image-only test PDFs can't be split question by question.
What if the answer key is wrong?
Every solution is compared with the answer key in the booklet. Mismatched questions go to a review list; you choose the correct option and the video follows it.
Where is our data kept?
Files and results are kept private to your institution and never shared with other institutions. Details are in our privacy and data protection notices.
We solve.
Whatever the problem in education: we grade the exam, explain what was missed and prepare the next one. Start your first job free and see the result yourself.