OSOctoSpark
Free tool

Twitter Photo Resizer — perfect dimensions for X

Resize and optimize images for Twitter/X with the perfect dimensions. Profile pictures, headers, tweet images, and Twitter cards — processed entirely in your browser.

Upload image

Drop your image here or click to browse.

Drop image here or click to upload

Supports JPG, PNG, WebP up to 10MB

Select size preset

Choose the appropriate dimension for your image.
Profile Picture — 400 × 400px
Header Image — 1500 × 500px
Tweet Image — 1200 × 628px
Twitter Card — 800 × 418px

Profile Picture

Square format for profile photos

400 × 400px

Result preview

Upload an image and click Resize to see the result here.

Twitter image sizes

Profile Picture400 × 400
Header Image1500 × 500
Tweet Image1200 × 628
Twitter Card800 × 418

Image guidelines

Use high-quality source images for best results.

Images are centered and scaled to fit the preset.

White background is added when aspect ratios differ.

Final output is JPEG at 90% quality.

Everything runs in your browser — your image is never uploaded.

Twitter/X image size guide

X has specific image requirements for different parts of your profile and posts. Using correctly sized images ensures your content looks professional and displays properly across all devices.

Profile picture

  • Size400 × 400 pixels
  • FormatJPG, PNG, or GIF
  • Max file size2MB
  • DisplayCircular crop

Header / banner image

  • Size1500 × 500 pixels
  • Aspect ratio3:1
  • Max file size2MB
  • NoteTop/bottom may be cropped on mobile

In-stream photos

  • Recommended1200 × 628 pixels
  • Minimum600 × 335 pixels
  • Max file size5MB
  • FormatsJPG, PNG, WebP, GIF

Twitter cards

  • Size800 × 418 pixels
  • Aspect ratio1.91:1
  • UseLink previews
  • Max file size1MB

Image optimization best practices

  1. Use high-quality images. Start with the highest quality source possible. Our resizer maintains quality while optimizing dimensions.
  2. Consider mobile display. Most X users access via mobile. Keep important elements centered and visible on smaller screens.
  3. Brand consistency. Use consistent colors, fonts, and styling across all your X images to build recognition.
  4. Text readability. Ensure any text overlay is large enough to read on mobile and uses high contrast.
  5. File format selection. JPG for photos, PNG for graphics with transparency, WebP for smaller file sizes with good quality.

Frequently asked questions

Everything that matters about how these tools work, and what we do with your data.