PixStack

Compress PNG

Compress PNG images online while preserving transparency. Reduce file size for faster websites and emails.

Drop your images here

or click to browse files

Max 5MB per file • Up to 1 images per upload

All processing local + server-side transient, no files stored.

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HOW TO COMPRESS PNG IMAGES ONLINE (FREE)

UPLOAD PNG

Drag & drop your png image(s) or click to browse. Our free png compressor works on any device—no install.

ADJUST QUALITY

Use our quality slider to balance file size and visual fidelity. Defaults are tuned for the web.

AUTO-COMPRESS & DOWNLOAD

Compression starts automatically. Download individual png files or a ZIP for batch.

TIP

For websites, aim for smaller files to improve Core Web Vitals and SEO. WebP offers excellent compression; keep PNG for transparency.

WHY COMPRESS PNG?

Compressing PNGs preserves alpha transparency for logos and UI while cutting file size. Smaller PNGs speed up websites, emails, and apps with no design compromise.

Tip: publish responsive images with exact sizes to reduce CLS and improve perceived performance.

MAKE YOUR PNG SMALLER WITHOUT LOSING QUALITY

KEEP TRANSPARENCY
Compress PNG while preserving alpha transparency—perfect for logos and UI icons.
CRISP UI ASSETS
Smaller PNGs load fast and look sharp across devices.
FASTER PAGES
Reduced file sizes improve page speed and Core Web Vitals for SEO.

QUALITY VS SIZE GUIDE

Interactive demo: See how quality affects file size in real-time

DEMO QUALITY75%

SAMPLE: 2MB PHOTO

WEBP
1.04 MB
-48%
JPEG
1.18 MB
-41%
AVIF
798.1 KB
-61%
PNG
2.00 MB
No savings

QUALITY RECOMMENDATIONS

90-100%PRINT QUALITY

Professional printing • Archival • Large files

75-89%HIGH QUALITY

Portfolio • Social media • Good balance

60-74%WEB OPTIMIZED

Websites • Fast loading • Recommended

10-59%MAXIMUM COMPRESSION

Thumbnails • Previews • Visible quality loss

OPTIMIZATION TIPS

• PHOTOS WITH PEOPLE
Use 70-85% quality to preserve skin tones
• LANDSCAPES
Can use 60-75% quality without noticeable loss
• TEXT IN IMAGES
Use 80%+ quality to maintain readability
• GRAPHICS/LOGOS
Consider PNG for sharp edges and text

FREQUENTLY ASKED QUESTIONS

RELATED TOOLS

You are using: COMPRESS

COMPRESS

CURRENT

Reduce file size • Keep quality

RESIZE

Scale dimensions • Batch resize

CROP

Trim images • Focus areas

CONVERT

Format change

OPTIMIZE

Smart compress + convert • Up to 80% smaller

ROTATE & FLIP

Rotate 90°/180° • Flip H/V

FORMAT-SPECIFIC TOOLS

Compress PNG

Keep alpha • Smaller files

Compress JPG

Sharp photos • Fewer bytes

Compress WebP

Modern & tiny • Fast

WORKFLOW SUGGESTIONS

• OPTIMIZE (smart all-in-one solution)
• RESIZE → OPTIMIZE (dimension + compression)
• CROP → OPTIMIZE (focus area + smart conversion)
• CONVERT → COMPRESS (manual control workflow)
Compress PNG Online — Free PNG Compressor | PixStack