Information checked: 21 July 2026.
Video can demonstrate a process, introduce a person or explain a product, but it adds production, accessibility, hosting, privacy and performance responsibilities. It should solve a communication problem that text and images do not solve as well.
In brief: Publish video with captions, a transcript, a lightweight loading strategy and a non-video route.
Choose a useful role
- Demonstrate movement, operation or scale.
- Explain a complex sequence with visible steps.
- Introduce a real practitioner where trust depends on them.
- Answer a repeated support question.
- Show an environment or access route before a visit.
Control playback and performance
| Decision | Good default |
|---|---|
| Autoplay | Avoid with sound; respect user control and reduced motion |
| Preload | Use none or metadata for non-critical video |
| Poster | Optimised representative image |
| Embed | Load on interaction where a third-party player is heavy |
| Mobile | Provide suitable dimensions and do not force full-screen unexpectedly |
Make the content accessible
- Accurate captions for speech and meaningful sounds.
- Transcript for reference and search.
- Audio description or equivalent explanation where visuals carry essential meaning.
- Keyboard-operable controls.
- No essential instruction available only inside the video.
Before you publish
Test the page with video blocked, sound muted, keyboard only and a slow mobile connection. The customer should still complete the task.
What often breaks
Third-party video embeds are often inserted above the fold and load substantial scripts before a visitor chooses to play. Captions may be auto-generated but unchecked, while important claims exist only in spoken audio. The page becomes slower and less accessible at the same time.
Evidence and records to preserve
- Master video and transcript
- Caption review record
- Consent and music/media rights
- Hosting/embed configuration
- Performance and accessibility test
Your next action
Test the heaviest video page with the player blocked and on a slow mobile connection. Move essential information into HTML and change loading behaviour until the core task remains fast.
Sources and date checked
This practical guidance was checked against the following primary sources. Date checked: 21 July 2026.
Keep the decision under your control
Retain the relevant accounts, source material, supplier terms and recovery information. Recheck changing prices, interfaces and rules before acting.