Lossless Re-encoding
PNG is compressed losslessly by default — redundant metadata is stripped, pixels stay identical.
Compress PNG to Smaller Size
PNG files from screenshots and designs are often much larger than they need to be. Shrink your PNG with lossless re-encoding — no quality loss, no upload, all in your browser.
Last updated: August 7, 2026
Why Choose Image Toolkit
Smart JPEG Conversion
On Maximum mode, PNGs without transparent areas are converted to JPEG for dramatic savings.
Screenshots & Designs
Perfect for UI screenshots, logos and graphics that don't need full PNG overhead.
How to Use
- 1
Upload an image
Click the upload area or drag & drop a JPG/PNG image onto the page.
- 2
Choose compression quality
High quality (near-lossless), Balanced (best for web), or Maximum compression (smallest size).
- 3
Download the result
Compare the file size and savings percentage, then download with one click.
PNG is the go-to format for screenshots, logos and UI assets — but it’s also notoriously heavy. A single high-DPI screenshot can exceed 2MB. Lossless re-encoding typically cuts that by 20–40% with zero visible change.
How to compress a PNG
- Upload your PNG (or JPG — both are supported).
- Use Balanced for lossless re-encoding with metadata cleanup.
- Download the smaller file; the savings preview shows the exact gain.
When smaller PNGs matter
- Web performance — every kilobyte counts on mobile connections.
- Email and chat — smaller files send faster and stay within limits.
- Storage — cutting hundreds of screenshots in half saves real space.
A concrete example
Take a 2.4MB high-DPI screenshot of a dashboard. After lossless re-encoding it drops to about 1.6MB — the same pixels, just without redundant metadata. Over a folder of 200 screenshots, that’s 160MB of recovered storage, and every web page using those images loads noticeably faster.
Private by design
Re-encoding happens locally in your browser. Nothing is uploaded, no account is required, and your files never leave your device.
Frequently Asked Questions
Why are my PNG files so large?
PNG stores every pixel with full color data plus metadata. Screenshots from high-DPI displays and design exports carry a lot of overhead.
Does compressing PNG lose quality?
Default compression is lossless — pixels are unchanged. Only Maximum mode may convert to JPEG (when there's no transparency), which trades some detail for much smaller files.
Can I compress PNG transparent images?
Yes. Transparent PNGs stay PNG and are re-encoded losslessly, keeping alpha channels intact.
How much smaller will my PNG get?
Screenshots and design exports typically shrink 20-40% losslessly. A 1.5MB high-DPI screenshot, for example, usually becomes 0.9-1.1MB with identical pixels.
Should I use JPEG instead of PNG for screenshots?
For photos and gradients, JPEG wins on size. For UI screenshots with sharp text and flat colors, PNG lossless compression keeps crisp edges — which is why this tool keeps PNG quality intact.