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Twitter (X) Header Size Checker

Check if your X/Twitter header image meets the required size.

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Drop a header image here or click to browse

Only the dimensions and file size are read - nothing is uploaded to a server.

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What Is Twitter Header Size Checker?

The Twitter (X) Header Size Checker tests a banner against every rule X enforces, then tells you exactly which one is failing. It reports on the 1500x500 pixel recommendation, the 2 MB file size limit, and whether your format is one of the accepted types. A preview shows how the banner sits in the real profile layout, with your avatar overlapping the lower left corner.

Who Uses the Twitter Header Size Checker?

Social media managers, personal account holders and small brands use it to get a header accepted on the first try instead of discovering an unpredictable crop after uploading.

How to Use the Twitter Header Size Checker

  1. Drop your header image onto the panel, or click to browse for it.
  2. Read the pass and fail results for the 1500x500 recommendation, the 2 MB file size limit and the accepted JPG, PNG and GIF formats.
  3. Check the profile header preview to see where your avatar and name overlap, then press the download button to get a copy cropped to 1500x500 if you need to fix it.

Why Choose Our Twitter Header Size Checker?

  • Checks all three rules X enforces: exact 1500x500 pixels, 2 MB maximum and accepted format
  • Explains why a wrong size is a problem, since X scales non-matching headers unpredictably
  • Download button re-crops the image to spec by filling the frame evenly from the centre
  • The profile mock shows the avatar and name overlapping your banner so you can position the design

Try the Twitter Header Size Checker above — it is free, fast, and works on any device. Bookmark this page to return whenever you need it.