Resize any image to the correct Twitter (X) profile header size (1500x500px). Smart cover-fill, real-time preview, instant download. Free, no upload needed.
1. Upload Image
Max 50MB
2. Select Format
Upload an image to see the preview
About the Twitter Header Tool
The perfect Twitter/X header image is 1500x500 pixels (3:1 aspect ratio). Getting this ratio wrong causes Twitter to crop your header unpredictably, often cutting off faces or important text. DCPIXEL ensures pixel-perfect conversion every time.
100% Private — Processed in Your Browser
Every file stays on your device. DCPIXEL processes images entirely using the browser's built-in Canvas API and WebAssembly — zero server uploads, zero data collection.
Free — No Account, No Limits
DCPIXEL is completely free with no daily limits, no watermarks, and no registration. We never process your files on our servers, so we can offer this permanently at no cost.
Frequently Asked Questions
What are the correct image dimensions for Instagram in 2025?+
Square: 1080x1080px (1:1) | Portrait: 1080x1350px (4:5) | Reels/Stories: 1080x1920px (9:16) | Landscape: 1080x566px. Our presets are updated to match current platform specifications.
Will resizing for social media crop my image?+
Yes, to fit the exact platform ratio without black bars. We use a smart cover-fill algorithm that centers your subject. You can see a real-time preview before downloading.
Can I resize the same image for multiple platforms?+
Yes. Resize for Instagram, then switch the preset to YouTube or LinkedIn and download a new version — all without re-uploading.
What format is the output image?+
PNG by default for maximum quality. This ensures crisp logos, text overlays, and screenshots. For photos, the visual difference from JPG is negligible at social media display sizes.
User Reviews
Share your experience with Twitter Header
Loading reviews...
🔥 Speed Up Your Site - 60% Off Launch
Score 99+ on Google PageSpeed Insights
Fast-track Largest Contentful Paint (LCP) under 2.5s and learn secure browser WebAssembly sizing matrices. Get our premium ebook **Pixel Perfect** with 4 bonus guides.