PNG compressor
Compress PNG Online
Compress PNG images and convert transparent PNGs to high-quality WebP directly in your browser with Kompresio.
How to use: 3 steps
- 1Upload imagesDrag PNG to the left panel or click Browse
- 2Adjust and processBalanced default works for most files. Then click "Compress PNG"
- 3Download resultsResults and download buttons appear here
Step 1 — No files yet
Upload to start compress png
Steps: 1) Upload PNG, 2) keep the Balanced preset, 3) click "Compress PNG" then download. Everything runs locally in your browser.
Original size
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Output size
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Saved
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Format
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Dimensions
Appears after clicking "Compress PNG"
Time
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Your images stay on your device
Compress PNG runs locally in your browser: PNG never leave your device for compression, preview, or ZIP export.
Guide
How to use Compress PNG
Kompresio keeps compress PNG online practical: the tool loads first, then useful guidance explains settings and use cases.
How to compress png
- 1
Upload PNG files.
- 2
Keep PNG or export WebP.
- 3
Download clean optimized files.
Why use Kompresio
- Optimize screenshots, UI assets, and transparent graphics.
- Preserve transparency when exporting WebP.
- Batch process PNG assets for websites.
Best for
Supported formats include PNG. For advanced server-side processing, use direct object storage upload rather than posting large images to serverless functions.
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Batch
FAQ
Questions about Compress PNG
Clear answers for privacy, formats, batch processing, and output quality.
Are my images uploaded to a server?
Core tools run in your browser. For the MVP flow, Kompresio processes previews, compression, conversion, resizing, metadata cleaning, and ZIP export locally on your device.
Can I process multiple images?
Yes. You can add multiple files to the queue, process them together, and download the results individually or as a ZIP archive.
Does compression reduce quality?
Lossy formats can reduce quality if the quality value is too low. The balanced presets use practical values for smaller files while keeping the image visually clean.