Does padding scale or crop my image?

Neither. The original pixels stay exactly the same size and position; the canvas simply grows around them, so nothing is scaled or cropped.

Is the padding transparent by default?

Yes, by default the new margin is fully transparent, matching how padding usually behaves for a PNG with a transparent background. You can also set a custom fill color.

How is this different from adding a border?

It's the same underlying canvas-expansion operation; padding just defaults to a transparent fill instead of an opaque frame color, since padding is normally meant to be invisible spacing rather than a visible border.

Can I add different amounts of padding per side?

This tool adds the same amount of padding on all four sides. For asymmetric padding, use the canvas size changer tool with a specific anchor and target size instead.

PNG Padding Adder - Add Empty Margin Around an Image

Overview

Introduction

This tool adds uniform empty padding around a PNG's content, entirely client-side, without altering the original pixels at all.

It's useful whenever an image needs breathing room around it, for example before placing it into a layout with fixed margins.

What Is PNG Padding Adder?

A canvas-expansion tool that grows a PNG's dimensions by a chosen padding amount on every side, filling the new area with a transparent (or custom-colored) background while keeping the original image pixel-for-pixel unchanged in the center.

It reuses the same underlying border-expansion math this site's border adder tool uses, just defaulting to a transparent fill.

How PNG Padding Adder Works

The output canvas is sized to the original width and height plus twice the padding amount (once per side), and every original pixel is copied into the center of that larger canvas at an offset equal to the padding.

The newly-added margin pixels are filled with the chosen color, transparent by default.

When To Use PNG Padding Adder

Use it to give a logo or icon breathing room before dropping it into a design that expects consistent spacing.

It's also handy for creating export-ready assets with built-in safe margins for print or social media templates.

Often used alongside PNG Padding Remover, PNG Space Adder and PNG Space Remover.

Features

Advantages

Runs entirely client-side; your image never leaves the browser.
Never scales or crops the original content — only adds space around it.
Supports a custom fill color for the padding when transparency isn't wanted.

Limitations

Padding is uniform on all four sides; asymmetric padding needs a different tool.
Very large padding amounts on an already-large image can approach the site's 4096px maximum canvas dimension.

Examples

Add transparent breathing room to a logo

Input

A 300x100 PNG logo, 20px padding

Output

A 340x140 PNG with the logo centered and 20px of transparent margin on every side

The canvas grows by 20px on each of the four sides while the logo itself stays pixel-for-pixel identical.

Add a white margin for print

Input

A 500x500 PNG, 40px padding, white fill

Output

A 580x580 PNG with a solid white 40px border around the original image

Choosing a custom fill color turns the padding into a visible print-safe margin instead of transparency.

Best Practices & Notes

Best Practices

Use transparent padding when the image already has a transparent background, so the margin blends invisibly.
Check the resulting dimensions against any layout constraints before exporting.

Developer Notes

This tool's lib function is a thin wrapper around the border adder's canvas-expansion implementation, defaulting the fill color to fully transparent; the shared math lives in a pure function over a plain Uint8ClampedArray pixel buffer with no DOM dependency.

PNG Padding Adder Use Cases

Adding safe margins to a logo before placing it in a template
Creating consistent spacing around icons in an asset library
Preparing a print-ready image with a visible border margin

Common Mistakes

Expecting padding to resize/scale the image — it only adds transparent space around the existing pixels.
Forgetting that a large padding value pushes the total canvas size toward the 4096px limit on an already-large image.

Tips

Combine with the padding remover tool to round-trip: add generous padding for editing, then trim it back later.
Use a custom fill color that matches your page background if you don't want a hard-edged transparent square.

PNG Padding Adder