PNG OCR Fixture Matrix

Pick PNG fixtures for clean receipt scans, grayscale OCR preprocessing, and image-based extraction smoke tests.

Comment utiliser cette matrice

Covers clean scan-style PNGs and noisier grayscale OCR inputs.
Useful for OCR preprocessing, thresholding, and receipt/document parsing workflows.
Anchored to the image extraction pack and workflow hub.

Cette matrice est rattachee a la bibliotheque PNG et a son manifeste.

Variante	Profil	Objectif de test	Fichier	Taille	Telecharger
Receipt Scan PNG Good first OCR smoke test for grayscale scan ingestion.	Clean scan	Receipt OCR baseline	`png_receipt_scan_sample.png`	4.4 KB	Telecharger
OCR-Noise PNG Targets preprocessing, thresholding, and low-quality scan handling.	Noisy scan	Denoising and OCR robustness	`png_ocr_noise_sample.png`	42.0 KB	Telecharger
1000x600 PNG Useful as a non-document control image when comparing OCR routing behavior.	Generic image baseline	Simple raster acceptance	`png_1000x600_sample_file_21KB.png`	20.1 KB	Telecharger

Bundle of real PNG, JPEG, TIFF, and scan-style PDF fixtures for OCR, scan ingestion, and document-photo extraction workflows.

image_extraction_fixture_pack.zip · 382.3 KB

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PNG, JPEG, TIFF, and scan-style PDF fixtures for OCR, document-photo capture, scan preprocessing, and image-based extraction workflows.

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Guides du meilleur format

Recommandations par cas d'usage

Best Format for Transparent UI Assets

Comment convertir

How to Convert PNG to TIFF How to Convert PNG to WEBP How to Convert TIFF to PNG How to Convert WEBP to PNG

Comparaisons

PNG vs WebP TIFF vs PNG