Quick answer
Do not use one flattened cover everywhere. LinkedIn recommends 4200 x 700 for a Page cover, and X recommends 1500 x 500 while warning that about 60 pixels at the top and bottom may crop. Keep essential content centered and create a destination-specific export.
Source check: August 28, 2026. Platform apps, APIs, account types, and third-party publishers can change on different schedules. The final operational check is the preview and public result in the exact path you use.
At a glance
| Surface or choice | Size or limit | Ratio or source | What it means |
|---|---|---|---|
| LinkedIn Page cover | 4200 x 700 | 6:1 | Current LinkedIn recommendation |
| X header | 1500 x 500 | 3:1 | Top and bottom can crop |
| Facebook Page cover | Destination-specific export | Wide | Preview desktop and mobile |
| YouTube channel art | Destination-specific export | Wide | Protect the central multi-device area |
What this page owns
Cover images are responsive. The same file can show more or less at different screen widths, and a profile photo or interface control can overlap it.
That ownership boundary matters. Boomp uses one clear page for each search job instead of publishing near-duplicate pages that give different answers to the same question.
A dependable production method
- Create a separate file for each destination.
- Keep essential text and logos in the center.
- Do not repeat interface-supplied contact details unless needed.
- Preview narrow and wide layouts.
- Recheck after upload from a public view.
The last check matters most. A design file, successful export, scheduler acceptance, or API response does not prove that the customer-facing artifact is correct.
Size is only one acceptance test
A technically valid file can still fail the business. Check these questions with the final media and caption together:
- Is every name, date, price, claim, location, and link current?
- Does the crop preserve the subject and the useful words?
- Are captions, contrast, and text alternatives sufficient for the content?
- Does the business have permission to use the people, customer material, music, footage, and marks shown?
- Does the call to action match the destination and what happens next?
- Did a responsible person approve this exact version?
For the full release gate, use the social media content quality checklist.
Where Boomp fits
Boomp fits when the recurring problem is larger than one pixel count. The free first look starts with a public website and returns ten finished posts, with images, a carousel and a short video, before asking for an account or a card. They are the software's reading of the public site and do not prove that Boomp knows the owner's voice. Publishing and the recurring month belong to the paid plans. Finished media and posts belong to paid work, with the customer's approval settings controlling what represents the business.
See ten finished posts made from your website, free.
Related guides
- Social Media Profile Picture Sizes 2026: One Logo, Safe Crops
- LinkedIn Image Sizes 2026: Posts, Pages and Article Covers
- X (Twitter) Image Sizes 2026: Posts, Profiles and Headers
- Social Media Safe Zones 2026: Keep Text and Logos Visible
