PNG OCR Fixture Matrix

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

How to Use This Matrix

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.

This matrix is anchored to the PNG library page and its manifest.

Variant	Profile	Test Focus	File	Size	Download
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	Download
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	Download
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	Download

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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Best Format Guides

Best Format for Use Cases

Best Format for Transparent UI Assets

Conversion Guides

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

Comparisons

PNG vs WebP TIFF vs PNG