Steganography for Engineers
The submittal is due to the client by 5 PM and the 150 MB drawing set will not upload. If you work as one of the engineers, 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 Engineers use Steganography
Day to day, engineers handle technical drawings, CAD exports, specifications, inspection reports, datasheets and project submittals — exactly the kind of files this tool is built for.
- Combining drawings, specs and calculations into one numbered submittal package.
- Compressing large CAD-export PDFs so they pass the project portal limit.
- Flattening markups and stamps so the approved revision cannot be changed.
- Converting between PDF and editable formats without corrupting drawing scale.
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 engineers work
- ✓Handles large, drawing-heavy files without choking or downsampling detail.
- ✓Flattening locks the approved revision so site copies stay authoritative.
- ✓No install on locked-down corporate machines — runs in the browser.
Steganography — Frequently asked questions
Is Steganography free for engineers?
Yes. Handles large, drawing-heavy files without choking or downsampling detail. There is no signup, no trial and no watermark on your files.
What kind of files can engineers use Steganography for?
Steganography works with the documents engineers handle every day — technical drawings, CAD exports, specifications, inspection reports, datasheets and project submittals. A common case: Combining drawings, specs and calculations into one numbered submittal package.
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.