Format and size
Format from magic bytes and real dimensions, including HEIF/HEIC images (from the ispe box).
Analysis
Image analysis
The Image analysis module breaks a photo down into its technical details: JPEG structure, quantization tables, ICC profile, complete metadata and C2PA Content Credentials, in a PDF report that embeds the image.
What it does
What the Image analysis module does
Container structure
Structure and parameters for JPEG (encoding, subsampling), HEIF/HEIC (iPhone photos), WebP, TIFF (pages/compression) and GIF (with animation: frames, loop, duration).
Image authenticity (anti-deepfake)
Forensic heuristics ELA and multi-quality JPEG Ghost, metadata coherence (editing software, impossible dates) and EXIF thumbnail vs image comparison: signs of retouching or splicing.
Quantization tables
DQT tables de-zigzagged in natural 8×8 order — useful to estimate compression and provenance.
ICC and Photoshop
ICC color profile (class, space, description) and Photoshop IRB blocks (resolution, copyright, URL).
Composite fields
Derived exiftool-style values: Light Value, 35 mm equivalent, field of view, hyperfocal, depth of field.
Metadata, C2PA and PDF
All EXIF/GPS/IPTC/XMP metadata, full C2PA and a PDF report with the embedded image.
Step by step
How it works
- Load an image: Probatio reads its header for structure, DQT, ICC and dimensions.
- It extracts all metadata, computes the Composite fields and analyses C2PA.
- It generates a PDF report with the image, per-section metadata and the quantization tables.
FAQ
Frequently asked questions
Which metadata does it extract from an image?
All EXIF, GPS, IPTC and XMP metadata, the ICC profile, Photoshop blocks and derived Composite fields (Light Value, 35 mm equivalent, depth of field).
Does it support HEIC and RAW formats?
Yes: besides JPEG/PNG/TIFF/WebP it handles HEIC/HEIF/AVIF, JXL and the main RAW formats (DNG, CR2, NEF, ARW).
What are the quantization tables for?
They reveal the level and "style" of JPEG compression, useful to estimate an image's provenance and spot recompressions.
Related modules