Prepare Image for PWA Icon (512×512 PNG)
PWA manifest icons standard at 192×192 and 512×512. Start from 512 as your source.
Your images stay on your device. Nothing is uploaded.
Web App Manifest spec requires at least a 192×192 and a 512×512 icon; iOS home screen uses the 512×512 as its source. Starting from a clean 512 PNG lets you downscale to 192 without artefacts.
This preset produces a 512 px PNG — PWA-manifest-ready.
Related tools
Frequently asked questions
- How much can I shrink images for PWA icon?
- Typical reductions are 60–85% with no visible quality loss using the defaults on this page. Web App Manifest spec requires at least a 192×192 and a 512×512 icon; iOS home screen uses the 512×512 as its source. Starting from a clean 512 PNG lets you downscale to 192 without artefacts.
- What format is best for PWA icon?
- The default format for PWA icon is PNG at the preset above — chosen for the format's rendering compatibility and byte efficiency in this context.
- Will compression break transparency or animation?
- Transparency is preserved when the output format supports it (PNG, WebP, AVIF). Animation is preserved for animated WebP. JPEG output flattens transparency to white.
- Can I compress dozens of images at once?
- Yes — use the bulk compressor. Drop a folder or multi-select files; the queue processes them in order with progress per file, and you can download all results as a ZIP.
- Do my images get uploaded anywhere?
- No. The tool runs entirely in your browser — important for client work, internal assets, and anything not yet published.
Optimise the rest of your PWA icon assets.
Use the bulk compressor to process a folder in one go. Everything runs locally.
Start compressing