Put it into practice
- List the website, email and social placements.
- Create a reference composition with approved assets.
- Adapt and review each output separately.
What this looks like
A launch kit includes a wide hero, a square post and an email-friendly crop.
A detail to keep clear
A single aspect ratio cannot reliably serve every placement without compromise.
Using MockupX
These workflows describe ways to use the editor, not separate automated services. Keep original images and delivery notes outside the editor when a repeatable handoff matters. For paid work, check rights to screenshots, brand assets and stock imagery before publishing.
Check the result
Keep the original screenshot, then review the exported file at the size where people will see it. Check the message, the visible interface and the final crop separately. For a handoff, record the destination and the approved file so another person can distinguish the final version from a draft.
References and further reading
Use the official references for format behavior and current destination requirements. The composition advice above is a practical design approach, not a promise of platform approval.
MDN image formats ↗