PNG compression notes
PNG is lossless by design, so strong size reduction often comes from resizing or converting to WebP/JPG.
This page keeps PNG input clear while still offering output formats that can reduce file size much more.
Compress PNG Online
Reduce PNG file size for screenshots, graphics and web assets without sending the file to a server.
PNG inputWebP, JPG or PNG outputWidth reductionBrowser-only processing
PNG compressor
OriginalOriginal size: -
Choose a PNG image.
ResultResult size: -
Result
Need to compress many PNG files?Use batch PNG compression
How it works
- 1Choose a PNG image.
- 2Pick output format and quality.
- 3Download the optimized result.
Privacy and limits
- PNG quality settings are browser-dependent.
- Use WebP or JPG output for stronger size reduction.
- Transparent areas become white when exporting to JPG.
Common use cases
- Optimizing screenshots for support articles
- Reducing transparent graphics for web pages
- Creating smaller UI captures for documentation
Format notes
- Keep PNG output when transparency and crisp edges are required.
- Use WebP output for smaller transparent web graphics.
- Use JPG only when a white background is acceptable.
Original test sample
- A 1440px app screenshot can often shrink when capped at 1200px and exported as WebP.
- A logo-like PNG may not shrink much unless dimensions are reduced or the output format changes.
Frequently asked questions
Are my images uploaded?
No. ImgShrink processes selected images in your browser and does not upload them to a server.
Can this tool guarantee an exact file size?
No. Target compression gets close when possible, but the final bytes depend on image detail, dimensions, format and browser encoding.
Why is an output format unavailable or different?
The browser controls image decoding and export support. Some browsers may not export AVIF or may flatten unsupported transparency.
Source and compatibility notes
This tool works in the browser, so output support depends on what your browser can read and export.
Last checked: 2026-09-07
Notes
- No server-side image processing is used.
- Output format support depends on the browser.
- Animated images and metadata are not treated as guaranteed preserved data.
Related PNG tools
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Convert PNG images to WebP locally in your browser. Reduce file size for screenshots and graphics without uploading.
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