Private browser-based image optimization
Compress or convert images in your browser. This tool compares the original with the new file, recommends the smaller useful option, preserves transparency for PNG and WebP, and fills transparent areas with white only when JPG is selected.
Auto mode compares useful formats and keeps the original when the original is already the best size.
New files are re-exported in your browser without most embedded metadata.
The ZIP uses the best size recommendation for each image. When the original is already smaller, the ZIP keeps the original.
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The tool reads each image locally in your browser, creates a new version based on your selected setting, and compares the new file size with the original. If the original is already smaller, the result card tells you to keep the original instead of downloading a larger file.
WebP often gives strong compression for websites and can preserve transparency. Existing WebP files may already be optimized, so re-exporting them can make them larger.
JPG can be very small for photos. It does not support transparency, so transparent areas are filled with white when JPG is selected.
PNG is useful for transparent logos, icons, screenshots, and crisp graphics. It can be larger than WebP or JPG.
A smaller image can help a page load faster, but image compression is only one part of website performance. Fonts, scripts, plugins, layout shifts, caching, hosting, and theme structure can still affect a page after images are optimized.
If you are fixing a slow WordPress site, iBigWeb’s Website Cost Estimator can help compare whether the project looks closer to cleanup, performance support, source-level repair, technical SEO support, or a rebuild.
Your images are processed locally in your browser. They are not uploaded to our server for compression or conversion.
Some images are already optimized, especially small logos and existing WebP or PNG files. When that happens, the best choice is usually to keep the original unless you specifically need a different format.
Yes, when you export as PNG or WebP. If you choose JPG, transparent areas are filled with white because JPG does not support transparency.
No. This compressor preserves the pixels in the file. If a black or white background is already part of the image, compression will not remove it.