COA Metadata Inspector
Upload a Certificate of Analysis as a PDF or image. For PDFs we extract the embedded metadata (Producer, Author, creation and modification dates, encryption state) and surface the forgery indicators most commonly used to alter lab reports. For images (Janoshik publishes test reports as web pages) we decode the QR code on the report and link straight to the lab's verify page. Your file never leaves your browser. Everything is processed locally and nothing is uploaded.
How to interpret the results
Producer field: the software that generated the PDF. Authentic lab COAs are typically exported directly from chromatography or LIMS software. Producers like Adobe Photoshop, online PDF editors (iLovePDF, Smallpdf), or office software (Word, Pages) are strong forgery signals.
Creation vs modification date: most legitimate lab PDFs have matching or near-matching timestamps. A modification date significantly after the creation date suggests the PDF was edited after the lab issued it.
Author field: should typically be the issuing lab. A personal name often indicates a PDF edited on someone's machine and re-saved.
None of these signals alone is conclusive; they should be weighed alongside the lab's own records, the chromatogram math, and the lot number on the physical vial. Read the full verification guide →