Steganography for Teachers
Sunday night, planning for the week, and the LMS will not accept the 30 MB scanned packet you just built. If you work as one of the teachers, you have been there. Confileo's Steganography tool conceals a secret message invisibly inside an image — free, in your browser, with your files deleted automatically the moment you are done.
Start Using Steganography NowWhy Teachers use Steganography
Day to day, teachers handle lesson plans, worksheets, exam papers, student handouts, grading rubrics and permission slips — exactly the kind of files this tool is built for.
- Merging a week of worksheets and answer keys into one printable packet for the class.
- Shrinking a scanned exam so it fits inside the school LMS upload limit.
- Converting a Word lesson plan into a locked PDF that students cannot accidentally edit.
- Preparing materials at home on a personal laptop without paid software.
How to steganography in 3 steps
- 1Upload a cover image.
- 2Type the secret message to hide.
- 3Download an image that looks completely normal.
Built for the way teachers work
- ✓Free for every classroom — no licence, no procurement request.
- ✓Works on whatever device is in front of you, school-issued or personal.
- ✓Student data and permission slips are deleted right after processing.
Steganography — Frequently asked questions
Is Steganography free for teachers?
Yes. Free for every classroom — no licence, no procurement request. There is no signup, no trial and no watermark on your files.
What kind of files can teachers use Steganography for?
Steganography works with the documents teachers handle every day — lesson plans, worksheets, exam papers, student handouts, grading rubrics and permission slips. A common case: Merging a week of worksheets and answer keys into one printable packet for the class.
Can anyone see the hidden message?
No. The image looks identical; only someone who knows to extract it can read the message.
Is the process private?
Yes. The hiding happens in your session and the file is deleted afterward.
How do I hide a text message inside an image?
Upload a cover image, type your secret message, and download an image that looks completely ordinary but carries the text inside.
How does the other person extract the message?
They upload the image in the same tool to extract the hidden message inside it.
Does the image change noticeably?
No. The image looks identical to the naked eye, and no one notices a message is inside.
What is the difference between hiding and encryption?
Encryption makes a message unreadable but its existence is visible; hiding conceals that a message exists at all inside an ordinary image.