https://github.com/cleasbycode/pdvrdt
Steganography CLI / Web tool for concealing files within PNG images.
https://github.com/cleasbycode/pdvrdt
cli-tools compression conceal conceal-data data-hiding encryption hacking-tool hidden-files hidden-message hide-data hide-files-in-image icc-profile infosec mastodon png privacy privacy-tools steganography twitter x-platform
Last synced: 2 months ago
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Steganography CLI / Web tool for concealing files within PNG images.
- Host: GitHub
- URL: https://github.com/cleasbycode/pdvrdt
- Owner: CleasbyCode
- License: mit
- Created: 2023-01-26T19:08:43.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2024-12-06T09:51:23.000Z (7 months ago)
- Last Synced: 2024-12-06T22:38:49.616Z (7 months ago)
- Topics: cli-tools, compression, conceal, conceal-data, data-hiding, encryption, hacking-tool, hidden-files, hidden-message, hide-data, hide-files-in-image, icc-profile, infosec, mastodon, png, privacy, privacy-tools, steganography, twitter, x-platform
- Language: C++
- Homepage:
- Size: 67.7 MB
- Stars: 7
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# pdvrdt
Use CLI tools ***pdvin*** & ***pdvout*** with a ***PNG*** image, to hide/extract any file type, up to ***2GB** (image + data file).
*Compatible hosting sites, ***listed below***, have their own ***much smaller*** image size limits:-
* ***Flickr*** (**200MB**), ***ImgBB*** (**32MB**), ***PostImage*** (**32MB**), ***Reddit*** (**19MB** / ***-r option***),
* ***Mastodon*** (**16MB** / ***-m option***), ***ImgPile*** (**8MB**), \****X/Twitter*** (**5MB** + ***Dimension limits***)
*There are many other image hosting sites on the web that may also be compatible.*
***Image/video credit:*** [***@LikeToasters***](https://x.com/LikeToasters) / ***PIN: 7928092412826677679***
For extra security, your data file is also compressed (*zlib*) and encrypted using the ***libsodium*** crypto library.
(*You can try the [***pdvrdt Web App, here,***](https://cleasbycode.co.uk/pdvrdt/index/) if you don't want to download and compile the CLI source code.*)
## Usage (Linux - pdvin / pdvout)
```console
user1@linuxbox:~/Downloads/pdvrdt-main/src/pdvin$ sudo apt-get install libsodium-dev
user1@linuxbox:~/Downloads/pdvrdt-main/src/pdvin$ g++ main.cpp -O2 -lz -lsodium -s -o pdvin
user1@linuxbox:~/Downloads/pdvrdt-main/src/pdvin$ sudo cp pdvin /usr/bin
user1@linuxbox:~/Desktop$ pdvin
Usage: pdvin [-m|-r]
pdvin --info
user1@linuxbox:~/Desktop$ pdvin my_cover_image.png document.pdf
Saved "file-embedded" PNG image: prdt_17627.png (1245285 bytes).
Recovery PIN: [***3483965536165427463***]
Important: Keep your PIN safe, so that you can extract the hidden file.
Complete!
user1@linuxbox:~/Downloads/pdvrdt-main/src/pdvin$ g++ main.cpp -O2 -lz -lsodium -s -o pdvout
user1@linuxbox:~/Downloads/pdvrdt-main/src/pdvout$ sudo cp pdvout /usr/bin
user1@linuxbox:~/Desktop$ pdvout
Usage: pdvout
pdvout --info
user1@linuxbox:~/Desktop$ pdvout prdt_17627.png
PIN: *******************
Extracted hidden file: document.pdf (1016540 bytes).
Complete! Please check your file.
```
By default (*no options selected*), ***pdvin*** embeds your data file within the last ***IDAT*** chunk of the ***PNG*** image.
For ***Mastodon***, the data file is stored within the compressed ***iCCP chunk*** of the ***PNG*** image.
To create "*file-embedded*" ***PNG*** images compatible for posting on ***Mastodon***, use the ***-m*** option with ***pdvin***.
https://github.com/user-attachments/assets/dad59635-c431-4d3a-a2dc-93b9f4f3b6be
https://github.com/user-attachments/assets/2776d34e-e220-4d7c-955f-04c7cf7ecc1f
To correctly download images from ***X/Twitter*** or ***Reddit***, click the image in the post to ***fully expand it***, before saving.
In addition to the **5MB** image size limit, ***X/Twitter*** also has the following dimension size limits.
* ***PNG-32/24*** (*Truecolor*) **68x68** Min. - **900x900** Max.
* ***PNG-8*** (*Indexed-color*) **68x68** Min. - **4096x4096** Max.
https://github.com/user-attachments/assets/aa99cb70-cf11-4bee-8cf5-40a6015c23e6
To create "*file-embedded*" ***PNG*** images ***compatible*** for posting on ***Reddit***, use the ***-r*** option with ***pdvin***.
From the ***Reddit*** site, click "*Create Post*" then select "*Images & Video*" tab, to post your ***PNG*** image.
To correctly download an image from ***Flickr***, click the download arrow near the bottom right-hand corner of the page and select ***Original*** for the size of image to download.
## Third-Party Libraries
This project makes use of the following third-party libraries:
- [**libsodium**](https://libsodium.org/) for cryptographic functions.
- [**LICENSE**](https://github.com/jedisct1/libsodium/blob/master/LICENSE)
- Copyright (c) 2013-2025 Frank Denis ([email protected])
- **zlib**: General-purpose compression library
- License: zlib/libpng license (see [***LICENSE***](https://github.com/madler/zlib/blob/develop/LICENSE) file)
- Copyright (C) 1995-2024 Jean-loup Gailly and Mark Adler
##