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PNG Size Reducer

Size reduction comes from fewer pixels, then a canvas PNG re-encode.

Page updated 2026-09-14.

PNG Size Reducer visual
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PNG is redrawn on canvas at the chosen scale, then re-encoded. Smaller pixels usually mean fewer bytes.

Scale maps to output pixels before PNG re-encode. 80% on a 2000 px image exports near 1600 px. 100% keeps original size and may not shrink bytes. This is not pngquant.

Compression Results

Size reduction

0%

Original

0 KB

Compressed

0 KB

Output size

0 x 0

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Smaller PNGs without a desktop app

Page weight and email attachment limits care about bytes, not just pixels. This tool redraws your PNG on canvas at a scaled size and exports a new PNG.

Quality slider maps to output scale. 80 percent on a 2000 px wide image exports near 1600 px wide with fewer bytes.

Compare original and compressed sizes before download.

Use with other image tools

Convert SVG first with the SVG to PNG Converter, then compress the export.

Resize to exact specs with the Image Dimension Resizer when platform requires fixed width.

Favicon PNG sets from the Favicon Generator workflow compress well at small sizes.

When to lower quality

Hero images above 200 KB benefit from 70 to 90 percent quality if full resolution is not required on mobile.

UI sprites and icons may need 100 percent quality to keep crisp edges.

Rerun after art changes. Compression is destructive when dimensions shrink.

Frequently Asked Questions (FAQ)

How does PNG compression work here?

Upload PNG, set output scale 10 to 100 percent. Scale changes output dimensions before canvas PNG export. 100 percent keeps original size and may not reduce bytes. Lower scale shrinks width and height, which usually reduces file bytes. This is not pngquant or oxipng.

Is my file uploaded?

No. FileReader loads PNG locally. toBlob runs in your browser.

What does the results panel show?

Original KB, compressed KB, percent size reduction, and output width x height. Download is disabled until a PNG is loaded and processed.

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