X Banner Maker
Free online X (Twitter) banner maker. Turn screenshots with black bars into a clean 1500×500 profile header — AI removes UI, restores the subject in HD, and outpaints both sides.
How to make an X (Twitter) banner online
- Upload a screenshot or photo — Vertical shots, phone screenshots, and images with black/white letterbox bars are fine. UI icons and dimension labels can stay.
- Choose AI rebuild or local crop — AI mode analyzes the subject, clears screenshot chrome, outpaints missing sides, then exports a true 3:1 banner. Local mode only crops (free, no upload).
- Generate at 3072×1024, then export — The model generates a panoramic edit; we Lanczos-scale to standard 1500×500 and optional 3000×1000 JPEG.
- Upload to X as your header — Download the JPEG, open X → Profile → Edit profile → Header (or Banner), and save.
Why use this X banner maker
- Built for letterboxed screenshots — Not just a crop tool: AI fills black bars with a natural continuation of the background.
- Subject stays consistent — Structured prompts lock identity, pose, and framing so pets or people do not become close-up face crops.
- Exact X header sizes — Export 1500×500 for X upload, or 3000×1000 for a sharper master file.
- Local crop still available — Already have a clean wide photo? Use free local cover-crop without using cloud quota.
X banner size guide
X (formerly Twitter) profile headers use a wide 3:1 frame. Uploading the wrong ratio often crops faces or leaves empty bars.
- Recommended upload: 1500 × 500 pixels (JPEG)
- Aspect ratio: exactly 3:1 panoramic
- Optional master: 3000 × 1000 for sharper sources
- Safe area: keep the main subject near the center — X may crop differently on mobile vs desktop
Common use cases
- Phone screenshots with black side panels that need natural outpainting
- Pet or portrait photos you want as a premium X profile header
- Removing Pinterest / search / dimension UI residue from screenshots
- Turning a tall photo into a clean panoramic banner without awkward letterboxing
Tips for better banners
- Prefer a clear main subject in the middle third of the source image.
- If the screenshot is busy with UI, use AI mode — local crop cannot invent missing sides.
- Add a short note when needed (e.g. “keep full body, dark fabric sides”).
- AI mode is quota-limited; save local crop for already-wide, clean photos.
FAQ
What size should an X (Twitter) banner be?
Use 1500 × 500 pixels (3:1). This tool also offers 3000 × 1000 as a high-resolution master that you can downscale if needed.
Can it remove black bars from screenshots?
Yes. AI rebuild mode is designed to remove letterbox / panel bars and UI icons, then extend the background so the banner looks like a real panoramic photo.
Is the X banner maker free?
Local crop is free and stays on your device. AI rebuild uses cloud credits with daily and per-IP limits to control cost.
Will my pet or person look different after AI editing?
We lock subject invariants (pose, markings, full-body framing) in a structured prompt. Results can still vary slightly because the edit model has no seed guarantee.
How long does AI banner generation take?
Usually about 1–2 minutes: vision analysis, GPT Image 2 edit at 3072×1024, then Lanczos export to 1500×500 / 3000×1000.
Where do I upload the banner on X?
On X/Twitter: open your profile → Edit profile → Header (sometimes labeled Banner) → upload the 1500×500 JPEG → Save.
Tip: AI mode has daily/IP limits (cost control). Screenshots with black bars need AI outpaint; already-wide clean photos can use local crop.