JPEGConvert.com

Compress PNG Images

Re-encode one PNG with lossless PNG compression while keeping the same pixels, dimensions, and transparency. The compression level changes encoding effort, not image quality. Target sizing is best effort because some PNGs are already compact.
Choose an image
Works with PNG images.
Higher values mean smaller file sizes.
{{ targetStatus }}
Compression Summary
Original
{{ formatSize(originalSize) }}
Target
{{ targetSizeValue }} {{ targetSizeUnit }}
Compressed
{{ formatSize(compressedSize) }}
Reduction
{{ compressionRatio }}%
We aim for your target, but some images cannot reach it at full resolution.
{{ targetStatus }}
Try a lower compression level or resize the image to go lower.

No image uploaded yet.

Compressed Image
Working
Compressing PNG
{{ progress.toFixed(0) }}%
Compression issue
We could not finish this PNG compression
Try another compression level or resize the image first.
Compression summary
Review the compressed PNG before download
Adjust the compression or target size on the left, then download the compressed PNG.
Original {{ formatSize(originalSize) }}
Compressed {{ compressedSize ? formatSize(compressedSize) : 'Waiting for output' }}
Reduction {{ compressionRatio ? compressionRatio + '%' : 'Calculated after compression' }}
Result {{ result && result.name ? result.name : 'Preview pending' }}
Compressed Image
Try another compression level or resize the image first.
Result panel
Compressed PNG preview appears here
After upload, review the new file size, compare the preview, and download the compressed PNG.
  • The summary shows original size, compressed size, and reduction.
  • Target-size guidance appears here if the PNG cannot reach your requested size.
  • Check image detail at full size before saving.
{{ result && compressionIsComplete && !hasError ? 'Download the compressed PNG.' : 'The compressed PNG appears here after processing.' }}
Download PNG

Other Image Compressors

If you're looking to compress other image formats, check out our other free tools:

PNG Compressor Features

PNG output

PNG keeps transparency and crisp edges.

Compare sizes

See the original size versus the compressed size.

Preview the result

Review the compressed image before downloading.

Compressed filename

Downloads add a -compressed suffix to the filename.

Lossless pixel output

PNG compression keeps the same pixels, dimensions, and transparency. The compression level changes encoding effort, not visual quality.

Frequently Asked Questions

The tool shows the original size, compressed size, and the reduction ratio.

The download keeps your base filename and adds a compressed suffix.

No. This route uses lossless PNG compression, so pixel values, dimensions, and transparency stay the same. The file is re-encoded, so embedded metadata may not remain.

It changes the PNG encoder’s compression effort, not the pixels or visual quality. Some PNG files are already optimized and may not become smaller.

Image Tips and Ideas

Tip

PNG compression stays lossless

Adjusting compression reduces file size without changing the pixels, so the image stays sharp.
Tip

Trim extra pixels first

Cropping unused space before compressing can save more than compression alone.
Tip

Use the right format

PNG is great for graphics and transparency. For photos, JPG or WebP may be smaller.

Learn More

Learn more

Lossless vs. lossy formats

PNG compression keeps every pixel, while JPG and WebP trade some detail for smaller files.

Learn more

Why PNG files run large

Transparency and sharp edges are stored in full detail, which can increase file size compared to photo formats.

Learn more

When to convert instead

If size is still too large, try converting to JPG or WebP for photo-heavy images.

Need a hand with your file?

Check the supported formats and settings for your task. If the result isn’t what you expected, our support page can help you find the next step.

Get help | Contact support

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} if (convertMatch) { return {primary: formatLabel(convertMatch[1]), secondary: formatLabel(convertMatch[2]), connector: 'arrow'}; } if (convertToMatch) { return {primary: 'Any', secondary: formatLabel(convertToMatch[1]), connector: 'arrow'}; } if (key.startsWith('compress-')) { return {primary: 'Compress', secondary: formatLabel(key.replace('compress-', '')), connector: 'dot'}; } if (key.includes('base64') && key.includes('decode')) { return {primary: 'Base64', secondary: 'Decode', connector: 'dot'}; } if (key.startsWith('base64-to-')) { return {primary: 'Base64', secondary: formatLabel(key.replace('base64-to-', '')), connector: 'arrow'}; } if (key.includes('-to-base64')) { const from = key.replace('convert-', '').replace('-to-base64', ''); return {primary: formatLabel(from), secondary: 'Base64', connector: 'arrow'}; } if (key.includes('base64')) { return {primary: 'Base64', secondary: 'Encode', connector: 'dot'}; } if (key.includes('ascii')) { return {primary: 'ASCII', secondary: 'Art', connector: 'dot'}; } if (key.includes('resizer')) { return {primary: 'Resize', secondary: 'Pixels', connector: 'dot'}; } if (key.includes('remove-pages')) { return {primary: 'Remove', secondary: 'Pages', connector: 'dot'}; } if (key.includes('crop') && key.includes('pdf')) { return {primary: 'Crop', secondary: 'PDF', connector: 'dot'}; } if (key.includes('pdf-editor')) { return {primary: 'Edit', secondary: 'PDF', connector: 'dot'}; } if (key.includes('unlock')) { return {primary: 'Unlock', secondary: 'PDF', connector: 'dot'}; } if (key.includes('protect')) { return {primary: 'Protect', secondary: 'PDF', connector: 'dot'}; } if (key.includes('pdf') && key.includes('metadata')) { return {primary: 'Clean', secondary: 'Metadata', connector: 'dot'}; } if (key.includes('metadata')) { return {primary: 'EXIF', secondary: 'Clean', connector: 'dot'}; } if (key.includes('background')) { return {primary: 'Remove', secondary: 'Background', connector: 'dot'}; } if (key.includes('crop')) { return {primary: 'Crop', secondary: 'Image', connector: 'dot'}; } if (key.includes('watermark')) { return {primary: 'Watermark', secondary: 'Image', connector: 'dot'}; } if (key.includes('upscale')) { return {primary: 'Upscale', secondary: 'Image', connector: 'dot'}; } if (key.includes('merge')) { return {primary: 'Merge', secondary: 'PDF', connector: 'dot'}; } if (key.includes('split')) { return {primary: 'Split', secondary: 'PDF', connector: 'dot'}; } if (key.includes('ocr')) { return {primary: 'OCR', secondary: 'PDF', connector: 'dot'}; } if (key.includes('sign')) { return {primary: 'Sign', secondary: 'PDF', connector: 'dot'}; } if (key.includes('trim')) { return {primary: 'Trim', secondary: 'Video', connector: 'dot'}; } return {primary: 'Tool', secondary: '', connector: 'dot'}; } function getIconClass(key, categoryName) { const toFormat = key.split('-to-')[1]; if (key === 'check-my-file') return 'bi-file-earmark-check'; if (key === 'prepare-for-ai') return 'bi-ui-checks-grid'; if (key.includes('ascii')) return 'bi-textarea-t'; if (key.includes('resizer')) return 'bi-aspect-ratio'; 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case 'gif': return 'bi-filetype-gif'; case 'svg': return 'bi-filetype-svg'; case 'pdf': return 'bi-filetype-pdf'; case 'word': case 'docx': return 'bi-file-earmark-word'; case 'xls': case 'xlsx': case 'excel': return 'bi-file-earmark-spreadsheet'; case 'heic': return 'bi-filetype-heic'; case 'webp': return 'bi-filetype-webp'; case 'bmp': return 'bi-filetype-bmp'; case 'ico': return 'bi-file-image'; case 'mp4': return 'bi-filetype-mp4'; case 'mov': return 'bi-filetype-mov'; case 'mp3': return 'bi-filetype-mp3'; case 'wav': return 'bi-filetype-wav'; case 'avi': return 'bi-filetype-avi'; default: return 'bi-file-earmark-image'; } } if (categoryName === 'video') return 'bi-film'; if (categoryName === 'audio') return 'bi-music-note-beamed'; if (categoryName === 'image') return 'bi-file-earmark-image'; return 'bi-gear'; } const formatMeta = getFormatMeta(lowerKey); const connectorIcon = formatMeta.connector === 'arrow' ? 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