PNG Sample File for OCR and Scan Review

Validate PNG scan ingestion, OCR review, and noisy-image handling with real receipt and OCR-noise fixtures instead of synthetic screenshots.

Recommended Starter File

Filename png_receipt_scan_sample.png
Size 4.4 KB
MIME image/png
SHA256 361a115695b4d01d9b48356de97e9ea7048c84592375acf079c324104ed11b34

Validation Checklist

  • Compare OCR output between clean receipt scans and deliberately noisy PNG controls.
  • Verify image preview, rotation, and upload-to-OCR handoff before parser changes ship.
  • Confirm extraction and review tools still behave predictably when scan quality drops.

Additional PNG Fixtures

Filename Size MIME Pobierz
png_ocr_noise_sample.png 42.0 KB image/png Pobierz
png_1000x600_sample_file_21KB.png 20.1 KB image/png Pobierz
png_2000x1200_sample_file_36KB.png 35.7 KB image/png Pobierz

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Implementation Guides

API Error Taxonomy for File Pipelines

Define stable, actionable error classes for upload and processing APIs.

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Case Study: MIME Mismatch Blocking Legitimate Uploads

A production-style incident where strict type checks rejected real user files and how policy was corrected.

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Checksum Integrity Workflows

Use SHA256 manifests to guarantee fixture integrity in CI and production pipelines.

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Conversion Output Verification Playbook

Verify converted outputs for correctness, quality, and contract compliance.

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