PixelKnot: Hidden Messages

PixelKnot: Hidden Messages Free App

Rated 3.81/5 (892) —  Free Android application by The Guardian Project

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About PixelKnot: Hidden Messages

Have a secret that you want to share? Why not hide it in a picture? With PixelKnot, only your friends with the secret password can unlock your special message. Everyone else just sees a pretty picture. It’s a fun and easy way to share hidden messages without anyone knowing. Take those pixels, twist them in a knot, and see for yourself!

★ DISGUISE YOUR MESSAGES: Pictures are public, the text is hidden inside. Even a trained eye will think the image is unedited. It’s security through obscurity!
★ FOR YOUR EYES ONLY: Put a password on the secret message to make sure that no one can read it except the person it’s meant for.
★ EASY IMAGE CHOOSER:  You can use the camera to take photos, or just use photos you’ve already taken.
★ INVISIBLE CHANGES: Even a trained analyst analyst shouldn’t be able to detect any message. The image bytes should seem undistorted.
★ SHARE ACROSS PLATFORMS: Want to share the images over email, file sharing tools (like Dropbox & Sparkleshare), social media (like Google+ & Flickr) or directly through Bluetooth or NFC? Not a problem! The messages are still recoverable on the other side. We'll have even more tools (like Facebook) working soon, so stay tuned!
★ AD-FREE: We want your love, not your money.
★ MATHEMATICALLY SECURE: We use the newly developed steganography algorithm F5 which implements matrix encoding to improve the efficiency of embedding and employs permutative straddling to uniformly spread out the changes over the whole steganogram.
★ ATTACK RESISTANT: We’ve launched attacks on images with messages hidden in them using a specialized version of stegdetect, an automated tool for detecting steganographic content in images. In most cases, the pictures have been impervious to attack. We will be including detection in an upcoming version of the application so you can easily test it yourself!
Don’t see your language? Join us and help translate the app: https://www.transifex.com/projects/p/pixelknot/

***Learn More***
★ ABOUT US: Guardian Project is a group of developers that make secure mobile apps and open-source code for a better tomorrow.
★ OUR WEBSITE: https://GuardianProject.info.
★ ON TWITTER: https://twitter.com/guardianproject
★ OPEN-SOURCE: PixelKnot is free software. You can take a look at our source code, or join the community to help make it even better: https://github.com/guardianproject/pixelknot
★ MESSAGE US: Are we missing your favorite feature? Found an annoying bug? Please tell us! We’d love to hear from you. Send us an email: support@guardianproject.info

***Disclaimer***
The Guardian Project makes apps that are designed to protect your security and anonymity. The protocols that we use are widely regarded as the state of the art in security technology. While we are constantly upgrading our software to combat the latest threats and eliminate bugs, no technology is 100% foolproof. For maximum security and anonymity users must utilize best practices to keep themselves safe. PixelKnot is still an experimental application and should not be used in real world deployments. You can find a good introductory guide to these topics at https://securityinabox.org

How to Download / Install

Download and install PixelKnot: Hidden Messages version 1.0.1 on your Android device!
Downloaded 100,000+ times, content rating: Everyone
Android package: info.guardianproject.pixelknot, download PixelKnot: Hidden Messages.apk

All Application Badges

Free
downl.
Android
4.2+
Bug
buster
For everyone
Android app

App History & Updates

What's Changed
Big update to v1.0.1:
* Fix in JPEG encoding to defend against detection attack
Big update to v1.0.0:
* A brand new user experience... simple and streamlined!
* Now compatible with the latest Android OS and devices
New and improved in v0.3.3:
* Updated F5 steganography library
* Improved password security feature
* Cleaned up user interface for a more modern look
* Added background processing of encode/decode steps (you can do other things while it works!)
* More language support than ever!
Version update PixelKnot: Hidden Messages was updated to version 1.0.1
More downloads  PixelKnot: Hidden Messages reached 100 000 - 500 000 downloads
More downloads  PixelKnot: Hidden Messages reached 50 000 - 100 000 downloads
Version update PixelKnot: Hidden Messages was updated to version 0.3.3

What are users saying about PixelKnot: Hidden Messages

U70%
by U####:

App not working... I've entered a large section of text and the image came out cropped. However, that is not as bad as what I seemed to come across when I sent a mail to myself with that image. I discovered that the app also forwards a copy of the image to the developer!! Please explain the rational or you ought to be considered spy app

D70%
by D####:

The app works, and it certainly does exactly what it says it can do. However, the big feature that I see missing that I require is the ability to select and copy the received text from a decrypted image. I would like to embed an already encrypted pgp message and receiving without the ability to copy and paste completely breaks it for me.

J70%
by J####:

Waste of time and data... the ideology is good tho... work on the coding n encryption.. app don't work

D70%
by D####:

Fake it can't work for me he always show me wrong password but I type right password fake app don't download

D70%
by D####:

Fantastic app! Beautiful concept and execution. Some of these comments are ridiculous. Works perfectly. Thank you guardian project.

D70%
by D####:

I'd love this app if it could decrypt the messages it encrypted. Emailing myself messages and opening with this app only to be repeatedly asked for the password. Please fix this fault

D70%
by D####:

Not working it always said try again I know I entered it right

E70%
by E####:

It works. The decode only shows as a system sharing option. Nothing explained that.

L70%
by L####:

Waste app. Always showing try again

I70%
by I####:

Excellent method to invisibly watermark images, or send secret messages to friends.

P70%
by P####:

Fake app.I entered correct password but it says wrong.

D70%
by D####:

Bad app not working

O70%
by O####:

Fake don't work

D70%
by D####:

It's bad

H70%
by H####:

Not working download mat karo bhai

D70%
by D####:

Always says try again while decryption.

I70%
by I####:

My Nexus 6p was able to successfully encrypt and decrypt a picture. About 30 seconds to encrypt and decrypt

D70%
by D####:

Always show failure

D70%
by D####:

Needs modern phone to perform encryption it appears....

D70%
by D####:

worst app ever

D70%
by D####:

B70%
by B####:

its not working

R70%
by R####:

How to see the hide message???

D70%
by D####:

Faaltu app

D70%
by D####:

Worst app

D70%
by D####:

not best

N70%
by N####:

Very Nice app

D70%
by D####:

Not working in any phone waste of time f#######

H70%
by H####:

osthir

L70%
by L####:

Exillent

Q70%
by Q####:

Trash

Z70%
by Z####:

Good

P70%
by P####:

Amazing

G70%
by G####:

It worked perfectly the first time, took little effort and almost no thought. I haven't tested placing very large messages in an image, but that's next and I will update this when I do.

E70%
by E####:

Hides message ok but when it comes to showing the message it asks for password I enter it then it gets stuck on the percentage screen then causes my phone to get hot.

D70%
by D####:

After sharing image to the app and after it ask to enter password and after it says "Try Again" It doesn't do anything after

P70%
by P####:

It is pointless, I can't choose any images from Google photos.

D70%
by D####:

There's no information how to use, and when you discover how to decrypt the hidden message, the app isn't able to conclude the process.

D70%
by D####:

How to decrypt the image which are containing password or text??

D70%
by D####:

It's not working..


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Rating Distribution

RATING
3.85
892 users

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