Local-first upload preparation
Make every image pass the upload requirements.
Resize, normalize, validate, and package JPG, PNG, and WebP files without sending them to a server.
Use fine focal positioning, current Apple and Google asset packs, exact KB checks, and named local ZIP folders.
A practical check before you upload
- Choose one image or a batch; fitting and a local preview begin immediately.
- Inspect the real output dimensions, bytes, format, and explanation before downloading.
- Use Apple App Store and Google Play pack presets, but confirm authentic device captures and current store policies yourself.
What stays private
Selected image bytes, previews, and ZIP files stay in the current browser session unless you download them. The tool has no account, storage bucket, or server-side image job.