ImgShrink
ImgShrink

Transparent Padding Checker

Check whether a transparent logo, sticker or icon has empty space around the visible content before trimming or exporting.

Transparent edge scanContent boundsWasted canvas estimateNo upload

Transparent padding checker

Image preview
Choose an image to see checks.
Choose an image to see checks.

How it works

  1. 1Choose a PNG or WebP image with transparency.
  2. 2ImgShrink scans the alpha channel and finds the visible content bounds.
  3. 3Review top, right, bottom and left transparent padding before trimming the image.

Privacy and limits

  • The image is checked in your browser and is not uploaded.
  • The checker only measures transparent or semi-transparent pixels; white or solid backgrounds are not padding.
  • Actual trimming is handled by the Trim Transparent Pixels tool.

Checker scope

Transparent Padding Checker checks the image rules that matter for this task and explains pass, warning or fail results.

File-based checks run in the browser. Public URL checks read only the public page and public image resources entered by the user.

Common use cases

  • Finding image issues before publishing or uploading
  • Checking dimensions, format, metadata or technical properties
  • Choosing the next compression, resize, conversion or cleanup tool

Format notes

  • Readable details depend on browser support and the image format.
  • Checker results help find issues but do not replace the final preview or review in the target platform.
  • Use the linked repair tools when the file needs to be changed.

Original test sample

  • Use a JPG, PNG or WebP sample and confirm the result includes dimensions, format and next-step guidance.
  • For public URL tools, test a reachable page and confirm both missing and passing states are reported.

Frequently asked questions

Are my images uploaded?

No. ImgShrink processes selected images in your browser and does not upload them to a server.

Can this tool guarantee an exact file size?

No. Target compression gets close when possible, but the final bytes depend on image detail, dimensions, format and browser encoding.

Why is an output format unavailable or different?

The browser controls image decoding and export support. Some browsers may not export AVIF or may flatten unsupported transparency.

Source and compatibility notes

This tool works in the browser, so output support depends on what your browser can read and export.

Last checked: 2026-09-07

Notes
  • No server-side image processing is used.
  • Output format support depends on the browser.
  • Animated images and metadata are not treated as guaranteed preserved data.

Related transparency tools

All tools

Trim Transparent Pixels

Automatically trim transparent edges from PNG or WebP images in your browser. See cropped margins, new dimensions and download the result.

PNG Transparency Checker

Check whether a PNG or WebP image contains transparent or semi-transparent pixels. See alpha coverage and transparent edges locally.

Add Background to PNG

Add a white, black or custom color background to a transparent PNG or WebP in your browser. Preview and download JPG, PNG or WebP.

Compress PNG Online

Compress PNG images in your browser by resizing or converting to WebP/JPG when useful. Private local processing with instant downloads.