Archivos de muestra PNG

Descargas verificadas con metadatos tecnicos y controles de integridad.

Resumen del formato

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.

Por que los equipos eligen PNG: PNG is useful for scan-style grayscale fixtures, lossless OCR preprocessing, and document-image validation.

Estadisticas rapidas

Archivos mostrados11

Archivos totales11

CategoriaImage

ManifiestoJSON

Flujos principales para PNG

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

Errores comunes

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.

Siguiente paso mas rapido

Usa la ruta mas corta para este formato: abre la matriz, descarga el pack o salta a un tamano util.

Abrir matriz PNG Descargar Image Extraction Fixture Pack Abrir pagina del pack Abrir 50KB PNG

Metodologia de validacion

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

Tamanos de descarga recomendados

50KB Abrir

Fast image-ingest smoke tests.

10MB Abrir

Representative upload validation for large raster scans.

100MB Abrir

Stress image processing and storage flows.

Fixtures reales destacados

Receipt Scan PNG

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

png_receipt_scan_sample.png · 4.4 KB

Descargar fixture

OCR-Noise PNG

Noisy grayscale PNG for OCR preprocessing and robustness checks.

png_ocr_noise_sample.png · 42.0 KB

Descargar fixture

Packs de flujo

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

Descargar pack Abrir pagina del pack Abrir biblioteca ZIP

Matriz de fixtures

Usa la matriz curada de PNG para elegir fixtures limpios, limite y rotos para este formato.

Abrir matriz PNG Explorar todas las matrices

Paginas de estrategia relacionadas

Guias del mejor formato

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

Recomendaciones por caso de uso

Best Format for Transparent UI Assets

Como 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

Descargar archivos

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

Paginas populares por tamano

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

Paginas por caso de uso

PNG para Upload Testing PNG para Parser Regression PNG para QA Automation PNG para Performance Benchmark PNG para API Integration PNG para Security Scanning PNG para Bulk Import Validation

Nombre de archivo	Tamano	MIME	SHA256	Descargar
png_1000x600_sample_file_21KB.png .png	20.1 KB	`image/png`	`17643f66be24d8baeb19498f6c28403b6e8f8151dc5f11d107b0ec5e5a43dbc1`	Descargar
png_100x100_sample_file_5KB.png .png	4.3 KB	`image/png`	`f1eef2b7e4d1976f069748e0a097be0679d35e8b9bb3f60fcf1a902e688402c8`	Descargar
png_2000x1200_sample_file_36KB.png .png	35.7 KB	`image/png`	`e6e4885b4f373fd0e1c2c0bbaf3c69ce5406147d72b03abbe7e787d76e7b7c44`	Descargar
png_500x300_sample_file_13KB.png .png	12.0 KB	`image/png`	`9af726abe3a978fa9ecb003ea445dd6956cb0f47ac12fd5793e7ed77512b4585`	Descargar
png_ocr_noise_sample.png .png	42.0 KB	`image/png`	`cb7cf2486f666ad0f07acf9b5f765312cc929c24a28805cc8f8f48c0dc9823a1`	Descargar
png_receipt_scan_sample.png .png	4.4 KB	`image/png`	`361a115695b4d01d9b48356de97e9ea7048c84592375acf079c324104ed11b34`	Descargar
png_sample_file_100MB.png .png	100.0 MB	`image/png`	`20492a4d0d84f8beb1767f6616229f85d44c2827b64bdbfb260ee12fa1109e0e`	Descargar
png_sample_file_10MB.png .png	10.0 MB	`image/png`	`6745b7e94d596702c12bcafb18681750c06a7ba6e709f42cee76a3440f8b4edc`	Descargar
png_sample_file_250MB.png .png	250.0 MB	`image/png`	`e9474e4cc673c0c227a6e807e04aa4ab1f88d3744243950a290869c53daa65df`	Descargar
png_sample_file_25MB.png .png	25.0 MB	`image/png`	`ddb96117df14c38a5ab39a72ed9c897b99267706264e2e146825d27f0f4e6a28`	Descargar
png_sample_file_50MB.png .png	50.0 MB	`image/png`	`5ad6ffe2296c780686e43a5a6eafa375c9fdba294157d8b17dc78421fef62f96`	Descargar

Verificacion de checksum

Usa checksums para confirmar la integridad del archivo despues de descargarlo.

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

Formatos relacionados en 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)

Comparar PNG con alternativas

PNG vs WebP

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

Abrir comparacion

TIFF vs PNG

Contrast TIFF archival fidelity with PNG web/UI practicality.

Abrir comparacion

Guias relacionadas

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.

Leer guia

Conversion Output Verification Playbook

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

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