How to hide text in images: You have to communicate information of a certain relevance to your friend but you don’t want your “adored” sister, the usual hangman, to be able to “intercept” him and to poke his nose into your questions once again. Of systems useful for the purpose you have already tried several but unfortunately so far none of them has proven to be really effective. Given the situation, then allow me to give you a suggestion: why don’t you try to hide your messages in a photo thus going to inform your friend in this way? In short, a method worthy of agent 007 that I am sure will go unnoticed in the eyes of your sister! If you are interested, I can explain how to do it.
But no, what are you doing? Put that photo album and that pencil right away … I didn’t mean that at all! To hide text in images you need to make use of some special programs, available for Windows, Mac and Linux, which take advantage of steganography – that is the technique used since ancient Greece to hide a message between two interlocutors -, certainly not to write in the truth and proper sense of the term on your photos! How do you say? Are you clumsy with the PC and you fear not being up to it? But don’t worry, it’s not complicated at all, at least not using the resources I’m going to show you and following my instructions.
Then? How about finally putting the chatter aside and taking real action? Yes? Great! I therefore suggest that we do not go further and immediately start working on it. Position yourself comfortably in front of your trusted computer and read with the utmost attention all the information on what to do that you find below. In the end, you will see, you can say that you are happy and satisfied with what you have learned, I have no doubt. Enjoy the reading!
Steg (Windows / Mac / Linux)
If you are interested in understanding how to hide text in the images, I suggest you firstly use Steg . This is a resource at zero cost usable on Windows and Mac (as well as on Linux) that does not require installation and which allows you to conceal text to be written at the moment or documents at will within images supporting all those that are the most common types of files belonging to the category, such as: BMP, JPG, JPEG, PNG, PPM and TIFF.
To use it, connected to the download page attached to the official website of the program, click on the link to download the software that you can find under the item Download Link: in correspondence with the name of the operating system you are using and on the web page that opens click on button with the down arrow at the top right.
Now, select the photo you want to use to hide the text by clicking on the Open JPG image button at the top left s it is a JPG file or the one immediately to the left if it is another type of file.
So click on the button with the three colored bars at the top, select the Embed a text message: box and type your text in the field below. Then choose whether to encrypt the text by selecting, the method you prefer (from the menu below) and type a keyword as you wish, then press OK .
If, on the other hand, you need to hide a specific file, click on the button with the cassette and the green arrow downwards which you can always find in the upper part of the program window and select the saved text file (or other type of document) on your computer that you want to hide in the image. Then click on OK .
To conclude, click on the button with the floppy disk always attached to the top of the Steg window, select the location on your computer where to save the image and send it to those in charge.
The person who will receive the photo will be able to view the text or the file hidden inside it by opening it in turn with Steg as I indicated above, then clicking on the button with the box and the green arrow upwards attached to the program toolbar and choosing the destination location to save the extracted hidden file. Simpler than that?
If you are looking for a valid alternative to the above resource you can take advantage of P2Stego . It is a free software available only for Windows operating systems thanks to which it is possible to write and encrypt a message inside an image of your choice in BMP format. It is very simple to use and is extremely safe. Unfortunately, the development is no longer supported and has not been updated for a while, but still continues to work great, even on newer systems.
To use it, first connect to the program download page on the Softonic website and then click on the Free download button on the right in order to download the software to your PC. If the download does not start, click on the Alternative Download button located at the bottom of the displayed web page.
When the download is complete, extract the compressed archive just obtained in any position on your computer and start the .exe file inside it to start the P2Stego installation procedure. In the window that opens, click on the Next button , then on I Agree to accept the conditions of use of the program, on Next , Install and Finish so as to end the installation procedure and start the program.
Once the software window is displayed on the desktop, to insert a secret message in a photo, all you have to do is make sure it is selected, select the Hide tab attached to it, click on the button […] located next to the Source field : and select the BMP image in which you want to hide your message.
Then type in the Password field : the keyword that will be useful to reveal the text inserted in the photo, write the secret message in the Message field and click first on the Hide Message button and then on OK to complete the operation.
At this point, all you have to do is send the BMP file generated by P2Stego (whose name should be the original photo name-p2 ) to those who are responsible and communicate the keyword to be used to reveal the message it contains.
To view the secret message, he or she who will receive the photo will in turn download and install P2Stego as indicated above, start the program, select the Reveal tab from the top left of the main window, click on the button […] Located next to the Soruce field : select the photo, type the password in the appropriate field and click Reveal Message .
The programs I told you about earlier have not satisfied you because you are looking for a resource that not only allows you to hide text within an image but also allows you to encrypt it? Then ImageHide is right for you! This is another tool useful for the purpose for Windows operating systems, free of charge and which does not require installation. Try it now and you will see that you will not regret it.
To download it to your computer, connected to the appropriate download page attached to the Softpedia website and click on the Download button at the top left, then press the Softpedia Mirror (US ) link and wait for the download of the installation file to be started and brought complete.
When the download is complete, extract the ZIP file just obtained in any Windows position, start the .exe file inside it and press Yes / Run . Now, click on the Load Image button in the upper left part of the program window that appeared on the desktop and select the photo where you want to hide the text saved on your computer.
Then type the text you want to hide in the image in the appropriate area at the bottom, click on the Write Data button at the top and press the Save Image button always present at the top of the program window to save the image with the newly created message in any location on the computer.
If you need, you can also encrypt the text that the image will hide. To do this, click on the Encrypt button always attached to the program window, type your text and press the Encrypt button in the new window that has opened. Then enter the password with which you want to protect what is written and click on OK first and then on the Close button .
Therefore, send the saved image to the reference person and if the hidden text inside it is encrypted, also provide the relative password. Those who receive the image can view the text using the ImageHide software, opening the photo after clicking on the Load Image button and then selecting the Read Data button . In the case of encrypted text, you must instead press the DeCrypt button and enter the relative password.
iSteg (Windows / Mac)
Are you not using a Windows PC but a Mac? Then I can not help but advise you to resort to the use of iSteg . It is a free and specific program for macOS thanks to which you can hide text files and other types of documents inside images in JPG format.
To use it, connected to the software website and click on the Download iSteg 1.6.2 link in the Download section in order to download the program to your Mac. Then extract the compressed archive obtained and drag the iSteg icon which was present internally in the macOS Applications folder then right click on it and select Open twice in a row to confirm your willingness to open the program going around the limitations imposed by Apple against unauthorized developers.
Now that you see the program window on your desktop, click on the [+] button next to the word Source Picture File: and open the image saved on your computer where you want to hide the text. Then press the [+] button next to the wording Source Text File: and select the text file you want to hide in the photo.
Then type in the field below Password: the password you want to protect the opening of the file to be hidden (or generate a random one by clicking on the adjacent [+] button ), press the Process button , indicate the destination location of the file and click OK (by default the image will be saved with the output name ).
At the end of the procedure, share the image and the relative password with whomever you consider most appropriate. Who will receive the file can open it and view the information hidden in it always using iSteg, opening the reference image through the Soruce Picture File section :, typing the password in the field above, removing the check from the Encode box : located at the bottom , pressing on Process and selecting the destination position.