Logo Space Remover

Uploads a logo PNG, scans its alpha channel to find the tightest bounding box around the visible content, and crops the canvas down to exactly that box, removing any uneven transparent margin left over from an export. A free online tool from Staaarter, right in your browser.

Runs locallyUpdated 2026-07-26

Overview

Introduction

This tool trims empty, fully transparent margin from around a logo's visible content, entirely in your browser.

It's a fast way to clean up a logo export that has an uneven or unnecessary border baked into its canvas.

What Is Logo Space Remover?

A client-side auto-crop tool that scans a logo's alpha channel for the tightest bounding box around all non-transparent pixels, then crops the canvas to exactly that box.

Unlike a fixed-thickness border removal, it trims however much (and however unevenly) transparent margin actually surrounds the content on each side.

How Logo Space Remover Works

The tool walks every pixel to find the topmost, bottommost, leftmost, and rightmost non-transparent pixel, then crops the canvas to the rectangle those four edges define.

If the logo already fills its entire canvas, it's returned unchanged rather than needlessly re-encoded.

When To Use Logo Space Remover

Use it after exporting a logo from a design tool that left extra transparent padding you don't want.

It's also useful before feeding a logo into another tool (like the centerer or space adder) that expects a tightly-cropped source.

Features

Advantages

  • Runs entirely client-side; your logo file is never uploaded anywhere.
  • Automatically finds the exact bounding box, no manual measuring required.
  • Leaves the logo's own pixels completely untouched, only removing empty margin.

Limitations

  • It relies entirely on the alpha channel — a logo with a fully opaque background (no real transparency) has nothing to trim.
  • A fully transparent input logo has no visible content to define a bounding box, so the tool reports an error instead of guessing.

Examples

Trim an uneven export margin

Input

A 400x400 logo with the actual mark only filling a 200x150 area

Output

A cropped 200x150 PNG containing just the visible logo

The transparent margin on all sides is removed down to the tightest bounding box.

Trim a logo with no margin

Input

A logo whose visible content already fills the whole canvas

Output

The same logo, unchanged

When there's nothing to trim, the original image is returned as-is.

Best Practices & Notes

Best Practices

  • Run this before the space adder if you want a precise, even margin instead of whatever uneven margin the file happened to export with.
  • Check the transparency checker first if you're unsure whether your logo has real alpha data to trim against.

Developer Notes

The lib function is a thin re-export of the already-shipped removeSpaceAroundPng (itself built on the padding-remover's outline-finding and cropping helpers), since a logo is just a PNG once it's uploaded — no new bounding-box math was needed here.

Logo Space Remover Use Cases

  • Cleaning up a logo exported from a design tool with unwanted transparent padding
  • Preparing a tightly-cropped logo before centering it on a new canvas
  • Standardizing a batch of logo assets that all have different amounts of built-in margin

Common Mistakes

  • Expecting this to work on a logo with an opaque (non-transparent) background — it only trims based on real alpha data.
  • Running it on an already-tight logo and being surprised nothing visibly changes; that's the correct, no-op result.

Tips

  • Pair with the space adder to replace an uneven built-in margin with a precise, even one of your choosing.
  • Use the dimensions finder afterward to confirm the new, trimmed canvas size.

References

Frequently Asked Questions