X header resizer

A 1500 × 500 px header (3:1).

Upload
Edit
Download

Step 2 of 3: Edit your image

Add images

Preset

Step 1 of 3: Drop images here, or paste with Ctrl+V

Choose images

JPG, PNG, WebP, GIF or HEIC. Several at once is fine.

No batch limit · no paywall · nothing uploaded without your OK

Settings size, KB limit, format, DPI

Width

Height

Unit

DPI

Max KB

Min KB

Quality 1 to 100, empty = automatic

Format

File name

Suffix {name} = original name, {w} and {h} = width and height in px, {n} = number in the list

Make square (no cropping) Clean signature background Black and white

Step 3 of 3: Your image is ready

	Before	After
File size
Dimensions
Format

Your images are processed on this device. Nothing is uploaded unless you choose to share it, or your device can't handle an image and you agree to shrink it on our server (deleted right away).

Example with a real photo

We ran this tool on the photo below. These are the real results.

**Original**4032 × 2690 px · 7.26 MB · JPG

**Result**1500 × 500 px · 365.2 KB · JPGShown smaller here; the numbers are for the full file.

Photo: Unsplash

What this page does
Size	1500 × 500 px
Shape	3:1
Format	JPG

Platform sizes change from time to time. These are the commonly recommended sizes as of November 2026; check the platform's help centre if an upload is rejected.

How to use it

Pick the preset that matches where the image goes.
Drop your image and check the preview.
Download and upload it.

Getting the X header size right

The X header is a wide 3:1 strip. Uploading a normal photo means choosing a thin slice of it in the app, which is fiddly on a phone.

Your profile picture overlaps the lower left of the header, so keep important details away from that corner.

Questions

Is my photo uploaded to a server?

No. The resizing runs inside your browser with JavaScript, so the image stays on your device. Nothing is uploaded unless you choose to share it with "Share by link" in the Download step. Once the page has loaded, resizing keeps working even if you go offline. If your device can't handle an image, the tool can shrink it on our server instead, but only if you agree, and it is deleted right away.