PWA maskable icon (512×512 PNG)
A 512×512 maskable PNG icon with the mark inside the central safe-zone and a full-bleed background — for testing maskable icon cropping across Android adaptive-icon shapes.
Specifications
- Size
- 512x512
- Purpose
- maskable
- Safe Zone
- central 80%
- Format
- PNG
What is a .png file?
PNG (Portable Network Graphics) is a raster image format using lossless DEFLATE compression. It supports full 8- or 16-bit-per-channel truecolor, palette, and greyscale modes with an optional alpha channel, but no animation. It is the standard choice for screenshots, logos, and graphics with sharp edges or transparency.
How to use this file
Use an example PNG to test image decoders, alpha-compositing, thumbnail generators, and format converters, or to verify that a pipeline preserves transparency and color depth on round-trip.
How to use this file for testing
“PWA maskable icon (512×512 PNG)” is a deterministic Novus Examples fixture for Web assets. Favicons, web app manifests, service workers, robots and sitemap files, Open Graph images, and .well-known resources — for testing web tooling, crawlers, PWA installers, and asset pipelines.
Documented properties for this file: PNG. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
Web-platform fixtures are standards-compliant samples against fictional example.com data. Test crawlers, PWA installers and manifest validators, favicon/icon pipelines, service-worker registration, or .well-known parsers against the documented structure.
Code examples
<img src="maskable-icon.png" alt="Example image" width="640" loading="lazy">Related files
- xmlbrowserconfig.xml (MS tiles)A browserconfig.xml defining Windows Start-menu tile logos and colour — for testing MS tile configuration parsers and XML handling.
- pngPNG — PWA Icon 192×192 Wave G192×192 PWA icon SAMPLE for manifest icon pipelines.
- pngPNG — PWA Icon 512×512 Wave G512×512 PWA icon SAMPLE for manifest icon pipelines.
- cssPWA — app-shell.css SAMPLEPWA shell fixture SAMPLE (app-shell.css) for offline app-shell testing.
- htmlPWA — index-shell.html SAMPLEPWA shell fixture SAMPLE (index-shell.html) for offline app-shell testing.
- htmlPWA — offline.html SAMPLEPWA shell fixture SAMPLE (offline.html) for offline app-shell testing.
Generated by generation/web_assets.py. Free for any use, no attribution required — license.