Add Borders to Images

Add borders to images online — batch upload, unified border settings and live preview. 100% local processing.

A set of images for one post often ends up looking inconsistent. This tool applies a uniform border and background across a batch, with one shared parameter set.

Features

Batch processing

Select many PNG, JPG or WebP files and process them all with the same settings.

Border and background control

Border colour, width and corner radius, plus a background colour or a transparent background, each set independently.

Outer and inner border modes

Outer adds a frame around the image, leaving it untouched. Inner draws the frame over the image edge and crops the corners, which suits card-style posts.

Live preview

Parameter changes show immediately, so you are not exporting repeatedly.

Batch download

Download one image, or all of them at once.

Use Cases

Unifying a social media set

A nine-image grid with matching frames and colours reads as one post.

Adding padding for a platform

Margins help images fit different display ratios.

Making card assets

Inner mode with rounded corners produces a finished card straight away.

How It Works

1Upload imagesSelect multiple PNG, JPG or WebP files.
2Adjust parametersSet border colour, width, radius and background.
3PreviewConfirm the result looks right.
4DownloadOne at a time, or all together.

FAQ

Does it support transparent PNG backgrounds?

Yes. PNG transparency is preserved, so a transparent background does not produce white blocks.

What is the border width measured in?

Pixels. It is the actual pixel width on the canvas, not a proportion of the original image.

Is there an upload limit?

No hard limit on count. Large files trigger a note that processing may be slower, but you can continue.

Are images uploaded to a server?

No. All processing happens locally in your browser.