Open a file
Pick a photo (JPG, PNG, HEIC), a PDF or a Word document (DOCX). You can also paste text.
ANDROID / PHOTO & DOCUMENT METADATA
See the hidden data
in your files.
Remove it before you share.
Photos and documents carry details you can’t see: the GPS location where a photo was taken, your phone model, the author’s name, comments and edit history. Security Sentinel shows you every detail it finds, explains what it reveals, and saves a clean copy without the ones you choose to remove.
- JPG, PNG, HEIC, PDF and DOCX
- View every metadata field
- Remove what you choose
- Original file stays untouched
01 / WHAT YOUR FILES SAY ABOUT YOU
View it. Choose it.
Remove it.
Open a photo or document and Security Sentinel lists the metadata inside: field by field, with its value, what it reveals, and a risk level.
Try it with a fictional photo, PDF or Word file. Nothing is uploaded.
02 / A CHECK BEFORE YOU SEND
Open. Review.
Share a clean copy.
See what’s inside
Every metadata field the app finds is listed with its value, a plain explanation and a risk label.
Remove and save
Select the fields to delete. The app saves a new cleaned copy and shows a report of what was removed.
03 / ALSO FOR TEXT
Keep the message.
Lose the identifiers.
Paste a message to find emails, phone numbers and IP addresses. Replace them with useful labels, or remove them entirely. The app lets you compare your original and cleaned text side by side.
Try this fictional example. The preview stays in your browser.
TEXT PREVIEW3 DETAILS
ORIGINAL TEXT
Please send the draft to alex@example.com.
Call +1 202-555-0147 to confirm.
Reference address: 192.168.1.24
Illustrative example · No file upload
04 / INSIDE SECURITY SENTINEL
From the first scan
to the final check.
Remove photo metadata before you share.
The photo report shows the risk level of a picture and the metadata it carries.
05 / WHAT IT CHECKS
Look beneath
the surface.
Photos
GPS location and altitude, date and time taken, device make and model, editing software, embedded thumbnails, and IPTC/XMP author or caption fields. Faces and readable emails or phone numbers are flagged too.
PDF documents
Author, creator application, creation and modification dates, XMP edit history, embedded attachments, page thumbnails and hidden layers.
Word documents
Author, last modified by, company, comments and reviewer names, tracked changes, hidden text, revision numbers and template details.
PRIVACY, EXPLAINED
Local analysis.
Clear disclosures.
Your scanned content is analyzed on your device. Scan history stores local copies that you can delete. Some features use network services: ML Kit models and diagnostics, OpenStreetMap location previews, and Android system backup.
Read the full privacy policyDetection is a useful check, not a guarantee. Review outputs before sharing; document metadata cleanup does not remove sensitive body text.
A FEW THINGS TO KNOW
Questions,
answered.
What can I scan?
Choose text, supported JPG/PNG/HEIC images, or PDF/DOCX documents. Text scanning finds supported sensitive patterns; image and document scanning inspect metadata. Image analysis can also flag faces and readable text. Available findings depend on the file and device.
What is photo and document metadata?
Metadata is information saved inside a file that you don’t see when you look at it. A photo can store the GPS location where it was taken, the date and time, and your phone model. A PDF or Word file can store the author’s name, the company, comments, tracked changes, hidden text and edit history. Security Sentinel lists these details so you know what you are about to share.
How do I remove metadata from a photo or document?
Open the file in Security Sentinel and review the list of metadata it found. Select individual fields, all fields at a risk level, or everything, then create a cleaned copy. The app saves the copy as a new file and shows a report of what was removed. Your original file is not modified.
How does text redaction work?
Scan your text, review the highlighted findings, then select which matches to replace with labels such as [EMAIL] and [PHONE], or remove entirely. Compare the result with the original before copying or saving it.
Does my content stay on my device?
The app analyzes content on-device and does not upload scanned files to a Zarzara server. Google ML Kit may download models and send technical metrics to Google. Firebase Analytics collects app usage and fixed screen names, not scanned content. Photo location previews request map tiles from OpenStreetMap, revealing the requested area and your IP address. Android system backup may include app data, depending on your device settings.
How do I delete scan history?
Open Settings and use Clear History, or remove individual entries from Inspection History Log. This deletes the app’s saved history copies and reports. Original files, exported copies, temporary cache and system backups are separate; manage those with Android and the services you used.
Can it find or remove every sensitive detail?
No. Detection can miss information or flag harmless content. Metadata cleanup does not automatically remove sensitive information visible in a document’s body. Review every output before sharing, and keep an original if you need to preserve signatures, formatting or other file features.
Which languages does the app support?
Security Sentinel is available in 13 languages: English, Spanish, Portuguese, French, German, Italian, Japanese, Korean, Chinese, Hindi, Arabic, Romanian and Russian. It follows your phone’s language, and you can change it in Settings.
Where can I get Security Sentinel?
Security Sentinel is an Android app, available on Google Play. Use the Get it on Google Play button on this page to install it.