Resize an image to 300 × 100 pixels

FreeNo uploadNo signupWorks offline

Set any photo or signature to exactly 300 × 100 pixels. The image is resampled on your device with the same Lanczos filter desktop editors use, and nothing is uploaded.

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How to use Resize Image to 300x100

Resize Image to 300x100 – Resize any photo or signature to exactly 300 × 100 pixels. Free, no upload.

Choose or drop your image.
The size is already set to 300 × 100 pixels.
Turn off "Keep aspect ratio" if the form demands exactly this size.
Click Resize and download.

Supported formats

Input: JPG, PNG, WebP, AVIF, HEIC
Output: Same as input, JPG, PNG

What 300 × 100 pixels is for

A 3:1 strip, the shape a signature naturally takes when written on a single line. Worth being precise about where this number comes from: SSC states its requirement in centimetres - about 6.0 cm wide by 2.0 cm high - not in pixels. 300 x 100 is the pixel equivalent people search for and a reasonable interpretation at roughly 127 DPI, but it is not a figure printed in the notice, and other sites presenting it as official are overstating what the document says. Check the notice for your own exam and year: if it gives centimetres, any pixel size with the same 3:1 proportions and an acceptable file size will normally be accepted. If you want more resolution, 600 x 200 holds the same shape with twice the detail.

Exact size, or fit inside it

With "Keep aspect ratio" on, the image is fitted inside 300 × 100 without stretching, so one side may end up smaller than the target. Turn it off to get exactly 300 × 100, which stretches the picture if its shape does not match. For a form that rejects anything but the exact size, crop to the right shape first and then resize - that way nothing is distorted.

Limitations

Enlarging a small image to this size cannot add detail that was never captured.
The tool checks dimensions, file size and format - not whether the photo itself meets a form’s rules on pose, background or how recent it is.

Privacy

Files you choose are read into your browser’s memory and processed on your device; they are not uploaded to a server. Temporary download links are released after use, and the offline cache never stores your documents. More about privacy and limits.

Frequently asked questions

How do I make an image exactly 300 × 100 pixels?

Drop it here and turn off "Keep aspect ratio" - the result is exactly 300 × 100. Leave it on and the image is fitted inside that box instead, keeping its shape.

Will it stretch my photo?

Only with "Keep aspect ratio" turned off and a source image of a different shape. Crop to the right proportions first if you want the exact size without distortion.

Will resizing blur the image?

Making an image smaller uses Lanczos-3 resampling, which keeps edges crisp. Enlarging cannot invent detail that was never captured, so a large upscale will always look soft.

Is my image uploaded?

No. It is resized in your browser, on your device. Nothing is sent to a server, which matters when the image is an ID photo or a signature.

Is it free?

Yes - free, no signup, no watermark and no limit on how many images you resize.