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Twitter / X header size: 1500×500

X, the platform many people still search for by its old name, Twitter, displays a profile header at 1500×500 pixels, a 3:1 strip that sits behind your round profile photo in the bottom-left corner. This Twitter header size resizer — the same spec people now also call the X header size — fits your photo to exactly 1500×500 so you can see and avoid that overlap before you upload.

  • No upload — files stay on your device
  • Works offline once loaded
  • Free forever, no signup, no watermark

Target for this placement: {{ width }}×{{ height }} px ({{ label }})

Drop a photo here, or tap to choose JPG, PNG or WebP — nothing is uploaded
Fit mode
Output format
Padding
Quality
Rendering {{ width }}×{{ height }}…
Live preview
  • Original {{ sourceSizeLabel }}
  • Output size {{ resultSizeLabel }}
  • Output pixels {{ width }}×{{ height }}

Under the {{ maxKbLabel }} limit for this placement.

Quality was lowered automatically to fit the size limit.

{{ hint }}

How to use this tool

  1. Drop your photo

    Add any JPG, PNG or WebP photo — drag it onto the box or tap it to choose one from your device.

  2. Pick a fit mode

    Choose Cover to crop and fill the frame, or Contain to keep the whole photo and pad the edges with a colour or a blurred copy of the image.

  3. Download the exact size

    Check the live preview and file size, then download — the image is already the exact pixel size this placement needs.

Questions people ask

Is the X header size the same as the Twitter header size?

Yes — X is the current name for the platform formerly called Twitter, and the header photo spec did not change with the rebrand. It is still 1500×500 pixels whether you search for 'twitter header size' or 'x header size'.

Why does my profile picture overlap the header?

Your round profile photo sits on top of the bottom-left corner of the header banner, roughly the leftmost fifth and bottom third of the strip. Keep any text or logo you care about closer to the centre or right side instead.

What file size does X accept for a header photo?

X accepts JPG, PNG and GIF headers up to around 5MB, well above what a 1500×500 photo needs — visual quality, not the size cap, is usually the limiting factor, which is why this tool defaults to a high JPG quality.

Is my photo uploaded anywhere?

No. Resizing happens entirely inside your browser using the Canvas API — this site has no upload endpoint, and the tool keeps working if you disconnect from the internet after the page loads.

What is the difference between Cover and Contain?

Cover scales your photo up until it completely fills the target frame and crops away whatever does not fit, so the result is nothing but photo, no padding. Contain scales the photo down until the whole thing is visible, then pads the leftover space with a colour or a blurred, zoomed-in copy of the same photo so it still looks intentional.

Do social media image sizes change over time?

Yes — platforms adjust these specs every year or two without much notice. The dimensions on this page were last verified in August 2026; if a placement changes after that, the pixel size and any file-size limit shown above may be out of date, so it is worth a quick check against the platform's current help page before a high-stakes upload.

Related tools

Free because it costs us nothing to run: your browser does the work, not our servers. Made by Dynamb Technologies — we build software for businesses.