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Browser-local workspace

Resize PNG images without an upload

Change PNG dimensions locally while preserving transparency and controlling whether images can upscale.

  • No upload
  • No sign-up
  • PNG
PixelShrink workspace
Local only

Nothing selected yet

    Per image

    25 MB

    Images per batch

    20

    Batch limit

    150 MB

    A practical guide

    Resize transparent graphics without filling the background.

    PNG is often chosen for logos, interface assets, screenshots, diagrams, and cut-out graphics. This route changes PNG width and height in the browser while keeping the output in a format that supports transparency. Exact dimensions, percentage scaling, and maximum-size presets cover common handoff requirements without uploading the source.

    Downscaling can soften very thin lines or small type because several source pixels must be combined into fewer output pixels. Inspect the result at its intended display size, especially for icons and UI captures. A smaller canvas does not guarantee a smaller byte count after lossless PNG encoding, but it removes unused resolution and can reduce memory and layout work where the image is displayed.

    Format notes

    Know what changes—and what does not.

    Alpha survives PNG output

    Transparent and semi-transparent areas remain available, so the result can sit on different page backgrounds.

    Small graphics need visual checking

    Thin strokes, one-pixel borders, and tiny text may soften when scaled to a non-integer size.

    Lossless output can still be larger

    The browser chooses the PNG encoding. Reduced dimensions often help, but an already optimized source can remain more efficient.

    Good fits

    Useful choices for real files.

    A logo for a site header

    Scale the logo near its real display dimensions while keeping the clear area around the mark transparent.

    A documentation screenshot

    Reduce an oversized capture for a readable article width, then make sure interface labels remain legible.

    Privacy by design

    Your image does not become our file.

    The PNG is decoded, scaled, previewed, and encoded in local browser memory. Its pixels are never submitted to the PixelShrink application server. Resetting or closing the page clears the temporary object URLs used for previews and downloads.

    Frequently asked questions

    Answers before you start.

    Will resizing keep PNG transparency?

    Yes. PNG output supports alpha, and the resize canvas keeps transparent areas instead of painting a JPG background.

    Why does a resized PNG look slightly soft?

    Downscaling blends source pixels. This is expected, and it is most visible on very thin lines, pixel art, and small text.

    Does the preset crop to an exact rectangle?

    No. A preset fits the full image within its maximum width and height while preserving the source aspect ratio.

    Related tools

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