olson.at

Image Toolkit

Client-side image metadata, steganography, conversion, and file carving utilities

Image & Video Metadata
Image Encoder
Strip Metadata
Convert & Resize
File Carver
Image Decoder
Image Diff
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Drop an image or video here or click to browse

Supports JPG, PNG, TIFF, WebP, HEIC, MP4, MOV

Encode text or another image inside a cover image using LSB steganography. The output looks identical to the human eye.
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Drop cover image here

Encoding Options

Select a cover image to see capacity.
Advanced image steganography decoder. Supports multi-bit LSB, channel isolation, XOR/ROT decryption, palette analysis, and JPEG DCT detection.
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Drop an image here or click to browse

PNG, BMP, GIF, JPEG supported

Extraction Parameters

Cipher Decoders

Decode shift: 13

Specialized Analyzers

Palette Analysis (8-bit PNG/GIF)

Detects hidden data in color palette indexes or unused palette entries.

JPEG DCT Analysis

Basic detection of DCT coefficient anomalies (F5, jsteg, outguess, steghide indicators) via entropy and chi-square statistical tests.

Strings Extraction

Extracts printable ASCII and UTF-16 strings from the raw image file — useful for finding embedded metadata, comments, scripts, or hidden text chunks.

OpenStego RandomLSB Extractor

Extracts data hidden by OpenStego's RandomLSB algorithm. Requires the same password used during embedding (leave empty if none). Works client-side — no data is uploaded.

Native Format Decoder

Attempts to decode images created with this tool's "Image Encoder" feature (PICT/TEXT markers).

This removes ALL metadata including EXIF, XMP, IPTC, ICC profiles, and GPS location data. The image is re-encoded, which may slightly affect quality for JPEGs.
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Drop an image here to strip all metadata

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Drop image here

100%
Scan any file for embedded files using magic number (signature) detection. Extracts images, archives, documents, and more that may be hidden inside other files.
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Drop any file here to carve embedded content

Images, disk images, documents, archives, firmware dumps...

Compare an original image with a suspected stego-modified version. Visualizes pixel-level differences, channel changes, and LSB modifications to pinpoint exactly where data was hidden.
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Original Image

Drop the clean cover image here

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Modified Image

Drop the suspected stego image here

All processing happens in your browser. No data is uploaded to any server.