Is the PNG padding generator free?
Yes. This PNG padding generator is free and runs entirely in your browser with no account required.
Does this scale the image itself?
No. The source artwork stays the same size inside the PNG. The tool only changes the canvas around it.
Can the padding stay transparent?
Yes. Transparent is the default, but you can also use white, black, or a custom solid color.
Does this upload the PNG to a server?
No. The canvas expansion and export happen locally in your browser, so the file never leaves your device.
Does it work on mobile?
Yes. The padding generator runs in any modern browser, including mobile, since all processing is done locally.
How much padding should an app icon have?
As a rule of thumb, around 8% to 12% of the canvas on each side. On a 1024px icon that is roughly 80 to 120 pixels, which keeps the glyph clear of the rounded-corner mask that iOS and Android apply. Start from your artwork at its native size, set the padding so the total lands near your target, and check the result against the square preview.
Will padding make my PNG file much bigger?
Barely, if the padding is transparent or a flat color. PNG compresses runs of identical pixels extremely well, so a large border of one uniform value costs almost nothing. The pixel dimensions grow, which matters for a texture atlas or a memory budget, but the byte size usually does not move much.
Can I use this to give a logo breathing room in a header?
Yes, and it is often better than adding CSS margin, because the spacing travels with the file. A logo padded to a known ratio drops into a slot in a slide deck, an email template, or a partner's site with the same clearance every time, without anyone needing to remember your brand spacing rules.
What is the difference between this and the trim tool?
They are inverses. Trim Transparent PNG finds the bounding box of the visible pixels and cuts the empty margin away. This adds a controlled margin back. A common workflow is to trim first, so you know exactly where the artwork's edges are, then pad by a chosen amount so the clearance is deliberate rather than whatever the exporter happened to leave.
Does the PNG leave my computer?
No. The file is decoded, drawn onto a larger canvas, and re-encoded in the page, so an unreleased logo or app icon stays on your machine. The only network call is a credit counter carrying the tool name.