Google Forms Header Image Size and Maker
The header size Google never documents, why the figure everyone repeats makes your header blurry, and a maker that crops it properly.
Drop an image below, or pick a colour. Drag the preview to reposition.
No image? Start from a colour
Google accepts 800 × 200 and that is the figure most guides repeat. It is also why so many headers look soft: the form displays it at close to that size, so a high-density screen has nothing left to draw with.
Google does not publish a size for the header image on a form. There is no line in the documentation, no tooltip in the editor, and no warning when you upload something that will be cropped in half.
What circulates instead is 800 × 200, and that figure is real: it is what the editor accepts. It is also the smallest thing it accepts, which is a very different claim, and it is the reason so many form headers look soft. The form displays the image at close to that width, so on any modern screen — which draws two physical pixels for every one you specify — there is nothing left in reserve.
The ratio that matters is 4:1. Everything else follows from it: 800 × 200 works, 1600 × 400 is the same shape at twice the definition, 2400 × 600 covers a very wide display. The tool above defaults to the middle one.
The part that actually goes wrong
Almost nobody has a photograph shaped like a letterbox. Google crops yours to 4:1 whether you like it or not, from wherever it decides, which is how a team photo ends up as a row of shoulders and a conference banner loses its own name.
Positioning the crop yourself, before uploading, takes about ten seconds and is the entire difference between a header that looks deliberate and one that looks like an accident. Drag the preview above until the part that matters sits in the strip.
Nothing here is uploaded
The image you drop is read by your own browser and never sent anywhere. That matters more than it sounds: a form header is usually a company logo, a team photograph or an event banner that has not been published yet.
Why it helps
The size nobody writes down
A ratio of 4:1, exported at 1600 × 400 so it stays sharp on a high-density screen. The 800 × 200 that every guide repeats is Google's minimum, not its recommendation.
You choose the crop, not Google
Almost no photograph is shaped like a letterbox. Google crops yours to 4:1 from wherever it likes. Drag the preview and the part that matters stays in frame.
The image never leaves your browser
It is read by your own device and nothing is sent anywhere — which matters when the header is a company logo or a photograph of your team.
How to do it
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1
Start from an image, or from a colour
Drop a photograph, a logo or a banner. If you do not have one, pick one of the six backgrounds: a form header is read in a second and works as a landmark, not as decoration, so a calm gradient often beats a busy photograph.
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2
Drag the preview until the crop is right
The 4:1 strip is unforgiving on a portrait photograph. Move it so faces, a logo or a horizon sit where you want them, and use the zoom to fill any gap.
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3
Add a title if the image needs one
The tool lays a dark veil under the text automatically. Without it, white type disappears the moment the photograph behind it turns pale, which is the single most common fault in hand-made headers.
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4
Download, then add it to your form
In Google Forms, open the theme customisation panel, and under Header choose Choose image, then upload the file. The header applies to the whole form, not to a single section.
Questions people ask
- What size should a Google Forms header image be?
- Google does not publish one. The editor accepts 800 × 200 as a minimum, and the shape it needs is 4:1. Export at 1600 × 400 and you keep that shape with enough definition to stay sharp.
- Why does my header look blurry?
- Because it was almost certainly made at 800 × 200. The form shows the image at close to that width, and a modern screen draws two physical pixels for every one you supply, so there is nothing left in reserve. Doubling the export fixes it.
- Can I use my logo as the header?
- A wide logo works well. A square or round one does not: stretched across a 4:1 strip it either fills a fraction of the width or gets cropped. Put it on a plain background with room around it, which is what the colour presets above are for.
- Will Google crop my image?
- Yes, to 4:1, and it chooses where. That is why this tool crops it first: what you position here is what the form shows.
- Do you keep the image I drop in?
- No. It is read by your browser and never sent anywhere. Open your network tab while you use the tool and you will see no request, because there is none.
- Can I have a different header on each section?
- No. The header belongs to the form, not to a section. If you need different visuals per section, an image inside the first question of each section is the closest Google Forms gets.
- Can I remove the header image entirely?
- Yes. In the theme panel, the themes without an illustration leave the header as a plain colour band, which is often the better choice for a short internal form.