Free browser tools

Useful before
the next step.

Small, focused checks for app releases and development workflows. Working data stays in this browser tab and is not sent to this website.

Release preparation

Store Screenshot Validator

Check screenshot dimensions, format, transparency, count, and store-specific constraints before upload.

API compatibility

Compare two OpenAPI or Swagger descriptions and review likely client-breaking changes.

Project re-entry

Find the context gaps that make a Windows development project difficult to resume or hand over.