EXIF Data Hider
Hide secret messages and files in JPEG/PNG EXIF metadata. Multiple methods: UserComment (AES-256), ImageDescription, XMP namespace, IPTC caption, GPS coordinate encoding.
Try the demo instantly
Loads a 200×200 demo photo — no upload needed
Drop an image here or click to browse
JPEG, PNG, WebP, TIFF, or HEIC · Max 50 MB
100% Client-Side Processing
Your image is processed entirely in this browser tab. Nothing is uploaded to any server.
How to Hide Data in EXIF Metadata (5 steps)
- Upload a JPEG or PNG image that supports EXIF metadata.
- Choose a hiding method: UserComment (largest capacity), XMP, or GPS coordinates (stealthiest).
- Enter your secret message or upload a file. Add a password for encryption.
- Click 'Hide in EXIF Data' to embed your payload.
- Download the image — it looks identical but contains your hidden data.
EXIF Steganography Methods Comparison
| Method | Technique | Capacity | Best For |
|---|---|---|---|
| UserComment (AES-256) | Stores encrypted payload in EXIF UserComment field | ~64 KB capacity | Primary method, good balance |
| ImageDescription | Stores payload in EXIF ImageDescription field | ~4 KB capacity | Short messages, simpler |
| XMP Namespace | Creates custom XML namespace for payload | ~2 MB capacity | Large files, file hiding |
| IPTC Caption | Stores payload in IPTC Caption/Comment | ~2 KB capacity | Short messages |
| GPS Coordinates | Encodes value in latitude/longitude digits | ~8 bytes | Maximum stealth, tiny payloads |
| MakerNote (Camera-Specific) | Wraps payload in a vendor-signature block (Canon/Nikon/Olympus/Panasonic/FujiFilm), sets matching Make/Model | ~16 KB capacity | Forensic mode, camera-specific mimicry |
| Thumbnail Replacement | Appends payload after the EXIF thumbnail's JPEG EOI marker | ~48 KB capacity | Forensic mode, large payloads in a rarely-inspected field |
Frequently Asked Questions
What is EXIF steganography?
EXIF steganography hides data inside image metadata fields (like camera info, GPS, comments) instead of modifying pixels. The image looks completely normal — only the metadata contains hidden information.
Which method should I use?
UserComment is recommended for most uses — it has 64KB capacity and uses AES-256 encryption. For large files use XMP. For maximum stealth with tiny payloads (up to 8 bytes), use GPS coordinates.
Will social media strip my hidden data?
Most platforms (Instagram, Twitter, Facebook) strip EXIF data for privacy. Email attachments and direct file sharing preserve it. For social media, use pixel-based steganography instead.
Is EXIF steganography detectable?
EXIF fields are easily readable by forensic tools. However, encrypted payloads appear as random data. The GPS method is hardest to detect as coordinates look normal. Use AES encryption for best security.
Can I scrub existing EXIF data before hiding?
Yes — enable 'Scrub before encode' to remove all existing metadata first. You can also choose to only remove GPS data while keeping other EXIF information.
What's the difference between MakerNote and Thumbnail methods?
MakerNote wraps your payload in a vendor-specific signature (Canon, Nikon, Olympus, Panasonic, or FujiFilm) and sets a matching Make/Model, so the field looks contextually consistent with a real camera rather than an orphaned blob. Thumbnail replacement appends your payload after the embedded thumbnail's JPEG end marker — invisible when the thumbnail renders, but recoverable from the raw EXIF thumbnail bytes. Both are Forensic-mode, high-capacity methods most viewers never inspect.