TOOLOG TOOL
PNG Compressor | Reduce Image Size with WebP/JPEG Conversion
Compress images in your browser with WebP/JPEG/PNG output, quality control, preview, savings stats, transparent-background notes, and safer oversized-file guidance.
Quality affects WebP and JPEG output. PNG is lossless, so file size may not shrink much.
Choose a PNG, JPEG, or WebP image to compress it in your browser.
WebP is usually best for photos and blog images. PNG output is lossless, so it may not shrink as much.
Download compressed imageWho needs this tool?
Large images slow down blogs, storefronts, and landing pages. This tool reduces image size directly in the browser to improve load speed and upload efficiency. You can load PNG, JPEG, or WebP files, choose the output format and quality, then check the preview, final size, and savings.
How it works
- Re-encodes your uploaded image in-browser
- Output format options: WebP / JPEG / PNG
- Quality slider to tune WebP/JPEG visual quality vs file size
- Shows original size, compressed size, reduction rate, output format, and preview
- Clear guidance for empty runs, unsupported files, oversized images, and larger-than-original output
- Warns before flattening transparent PNG pixels onto a white JPEG background
Uploaded files are not sent to a server. The image is processed in your current browser session.
Practical use cases
1. Optimize blog post images
Turn multi-megabyte photos into lighter files before publishing so image-heavy posts load faster.
2. Prepare storefront detail images
Compress product photos before upload to reduce the first-load burden on ecommerce pages.
3. Fit upload size limits
Quickly make an image small enough for community, messenger, or form upload limits.
Format guide
- WebP: usually the best first choice for photos, blog images, and product pages.
- JPEG: useful when a service does not accept WebP.
- PNG: best for logos, icons, screenshots, and transparency, but savings may be smaller.
For very large photos, resize first with Image Resizer and then compress. This lowers browser memory risk and usually gives a better final size.
Pre-compression checklist
- For photos, start with WebP around 80%, then compare 70-75% if the file is still too large.
- Keep transparent logos and icons as PNG or WebP rather than JPEG.
- Resize images above 25MB or 24MP first to reduce browser memory risk.
- If the result is larger than the original, the source may already be optimized. Try another format or keep the original.
SEO impact
Image optimization improves page speed and user experience, which helps overall search performance.
- Reference: Google PageSpeed Insights
- Resize before compressing: Image Resizer
- Prepare YouTube thumbnails and banners: YouTube Image Kit Maker
- Check caption length together: Text Counter
FAQ
Do I have to keep PNG output?
No. Photo-like images are often smaller as WebP or JPEG.
What quality range should I start with?
In most cases, 0.7 to 0.85 is a practical balance between visual quality and file size.
Why does PNG output sometimes shrink very little?
PNG is lossless, so the savings can be small for photos. If you do not need transparency, try WebP or JPEG.
What happens to transparency when saving as JPEG?
JPEG does not support transparency, so transparent pixels are flattened onto a white background. Use PNG or WebP for transparent logos and icons.
Why did PNG output get larger?
PNG is lossless and can be larger than the original if the source was already optimized. Try WebP or JPEG unless you need transparency or crisp UI edges.
Are uploaded files stored on a server?
No. The original file stays in your browser, and a separate compressed file is created for download.
Summary
Using compression plus format conversion can significantly improve image-heavy page performance.