Back it up, check it, get it done in one step.
Upload something and get a result. Nothing to install.
Digital evidence
Get proof that something existed as-is, with a date.
Certify a file
Get proof that your file existed exactly as it is on this date.
Your file is not uploadedUseCertify a photo
Take or upload photos and certify when and with which device they were taken.
Your file is not uploadedUseCertify a website
Capture a page exactly as it looks today and certify its content.
Just the addressUseCertify a WhatsApp chat
Upload the exported chat and certify the whole conversation.
Your file is not uploadedUseVerify a certificate
Check whether a file matches its certificate.
Your file is not uploadedUseView and remove metadata
See what hidden data your photo carries and download a clean copy.
Your file is not uploadedUse
Authenticity & AI
Estimate whether content is AI-made and check where it came from.
AI image detector
Estimate whether an image was generated with artificial intelligence.
AI-poweredUseAI text detector
Estimate whether an English text was written with artificial intelligence.
AI-poweredUseAI audio detector
Estimate whether a voice or audio clip was generated with artificial intelligence.
AI-poweredUseAI video detector
Estimate whether a video, its voice or its music was generated with artificial intelligence.
AI-poweredUseAuthenticity report
A verifiable report: detection, content credentials and a timestamp.
AI-poweredUse
Documents
Summarize, translate, compare and clean up your documents.
Anonymize a document
Detect names, ID numbers and personal data, and download the document without them.
AI-poweredUseSummarize a document
Upload a document and get what matters on one page.
AI-poweredUseExtract data to Excel
Turn invoices, tables and forms into a spreadsheet.
AI-poweredUseCompare documents
Upload two versions and see exactly what changed.
AI-poweredUseTranslate a document
Translate a whole document while keeping its structure.
AI-poweredUse
Audio
From recording to text and minutes.
Education
For teachers: build tests from your material and grade them with your key.
AI text detector
Estimate whether an English text was written with artificial intelligence.
AI-poweredUseGrade tests
Upload the answer key and the answers; get a score and feedback per question.
AI-poweredUseCreate a test
Upload your class material; get a test and its answer key, ready to print.
AI-poweredUse
From the blog
See allEducation
How to make a quiz or test from a text (with an answer key)
How to turn a reading or class handout into a test with solid multiple choice, true/false and open questions, plus an answer key ready for grading.
5 min · October 14, 2026
Authenticity & AI
Do AI detectors work? How to tell if text was written by AI
AI detectors can give a useful hint on long, unedited text, but they err in both directions and cannot prove authorship. Here is how to read them.
7 min · October 13, 2026
Digital evidence
How to capture a web page as evidence before it changes
Save the full-page image, the HTML, the response headers, the exact URL and the time, then lock each file with a hash and a trusted timestamp.
7 min · October 13, 2026
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