PNG Sample Files

Verified downloads with technical metadata and integrity checks.

Format Overview

PNG (.png) is a lossless raster image format supporting truecolor, palette, interlacing, and alpha transparency. Use sample .png files to test decoder compliance, color profile handling, and transparency rendering.

Why teams pick PNG: PNG is useful for scan-style grayscale fixtures, lossless OCR preprocessing, and document-image validation.

Quick Stats

Files Shown11
Total Files11
CategoriaImage
ManifestJSON

Top Workflows for PNG

  • Receipt and scan-image OCR preprocessing checks.
  • Lossless raster validation for document-image ingestion.
  • Baseline grayscale image extraction and thresholding tests.

Common Mistakes

  • Assuming any raster image is representative of OCR-oriented document scans.
  • Testing only clean images and skipping noisy or low-contrast inputs.
  • Ignoring image dimensions when benchmarking OCR throughput.

Proximo passo mais rapido

Use the shortest path for this format: open the matrix, grab the workflow pack, or jump straight to a useful size.

Abrir matriz PNG Baixar Image Extraction Fixture Pack Abrir pagina do pacote Abrir 50KB PNG

Validation Methodology

  • Validate MIME sniffing against extension and file signatures.
  • Test transparency, color profile, and resize pipelines.
  • Benchmark decode speed and memory use for larger dimensions.

Recommended Download Sizes

50KB Open

Fast image-ingest smoke tests.
10MB Open

Representative upload validation for large raster scans.
100MB Open

Stress image processing and storage flows.

Fixtures em destaque

Receipt Scan PNG

Clean scan-style PNG for OCR and receipt extraction tests.

png_receipt_scan_sample.png · 4.4 KB

Download Fixture

OCR-Noise PNG

Noisy grayscale PNG for OCR preprocessing and robustness checks.

png_ocr_noise_sample.png · 42.0 KB

Download Fixture

Pacotes de fluxo de trabalho

Image Extraction Fixture Pack

Bundle of PNG, JPEG, TIFF, and scan-style PDF fixtures for OCR workflows.

image_extraction_fixture_pack.zip · 382.3 KB

Baixar pacote Abrir pagina do pacote Abrir biblioteca ZIP

Matriz de fixtures

Use the curated PNG matrix to choose the right clean, edge-case, and broken fixtures for this format.

Abrir matriz PNG Ver todas as matrizes

Related Strategy Pages

Guias de melhor formato

Best Image Format for Web Performance Best Image Format for Print Workflows

Guias por caso de uso

Best Format for Transparent UI Assets

Guias de conversao

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

Download Files

All (11) 50KB (6) 10MB (1) 25MB (1) 50MB (1) 100MB (1) 250MB (1)

Popular Size Landing Pages

10MB PNG 25MB PNG 50MB PNG 100MB PNG 250MB PNG

Use-Case Landing Pages

PNG for Upload Testing PNG for Parser Regression PNG for QA Automation PNG for Performance Benchmark PNG for API Integration PNG for Security Scanning PNG for Bulk Import Validation
Nome do arquivo Tamanho MIME SHA256 Baixar
png_1000x600_sample_file_21KB.png
.png 		20.1 KB image/png 17643f66be24d8baeb19498f6c28403b6e8f8151dc5f11d107b0ec5e5a43dbc1 Baixar
png_100x100_sample_file_5KB.png
.png 		4.3 KB image/png f1eef2b7e4d1976f069748e0a097be0679d35e8b9bb3f60fcf1a902e688402c8 Baixar
png_2000x1200_sample_file_36KB.png
.png 		35.7 KB image/png e6e4885b4f373fd0e1c2c0bbaf3c69ce5406147d72b03abbe7e787d76e7b7c44 Baixar
png_500x300_sample_file_13KB.png
.png 		12.0 KB image/png 9af726abe3a978fa9ecb003ea445dd6956cb0f47ac12fd5793e7ed77512b4585 Baixar
png_ocr_noise_sample.png
.png 		42.0 KB image/png cb7cf2486f666ad0f07acf9b5f765312cc929c24a28805cc8f8f48c0dc9823a1 Baixar
png_receipt_scan_sample.png
.png 		4.4 KB image/png 361a115695b4d01d9b48356de97e9ea7048c84592375acf079c324104ed11b34 Baixar
png_sample_file_100MB.png
.png 		100.0 MB image/png 20492a4d0d84f8beb1767f6616229f85d44c2827b64bdbfb260ee12fa1109e0e Baixar
png_sample_file_10MB.png
.png 		10.0 MB image/png 6745b7e94d596702c12bcafb18681750c06a7ba6e709f42cee76a3440f8b4edc Baixar
png_sample_file_250MB.png
.png 		250.0 MB image/png e9474e4cc673c0c227a6e807e04aa4ab1f88d3744243950a290869c53daa65df Baixar
png_sample_file_25MB.png
.png 		25.0 MB image/png ddb96117df14c38a5ab39a72ed9c897b99267706264e2e146825d27f0f4e6a28 Baixar
png_sample_file_50MB.png
.png 		50.0 MB image/png 5ad6ffe2296c780686e43a5a6eafa375c9fdba294157d8b17dc78421fef62f96 Baixar

Checksum Verification

Use checksums to confirm file integrity after download.

shasum -a 256 your_file_name_here
# Compare output with SHA256 values listed above.

Related Formats in Image

JPEG (8) SVG (7) AVIF (6) TIFF (6) BMP (4) GIF (4) HEIC (4) WEBP (4) DCM (3) EPS (3) NII (3) PSD (3)

Compare PNG with Alternatives

PNG vs WebP

Choose between lossless PNG and modern WebP for graphics and web delivery.

Open Comparison

TIFF vs PNG

Contrast TIFF archival fidelity with PNG web/UI practicality.

Open Comparison

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Case Study: MIME Mismatch Blocking Legitimate Uploads

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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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