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Data Annotation & LabelingBeginnerTier 1 · $25

OCR Correction

Correcting machine-read text against the source image without silently rewriting it.

3 modules120 minutes of material10 exam questions · 80% to pass

Syllabus

01Character fidelity

40 min
  • Fix what the scanner got wrong
  • Leave what the page actually said

02Layout and language

45 min
  • Preserve reading order and columns
  • Handle mixed-language pages

03Confident versus inferred text

35 min
  • Flag inferred characters
  • Refuse silent normalisation

Assessed concepts

The exam tests these directly. Definitions are summarised here; the exact answer key stays on the server.

Character fidelity

Layout preservation

Inferred characters

Language variant

Silent normalisation

Certificate fee

$25

Charged only after you pass. Studying, practice and the exam are free.

Start module one

Exam attemptsUnlimited

Certificate validityNo expiry

VerificationPublic API

Refund window30 days

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