Why is your website loading slowly? Unoptimized images are usually the heaviest culprit.
Stop burning ad budget on slow pages. Compress, resize, and convert images to WebP in batch directly on your browser securely.
In short
- The problem: Slow website speeds (Lighthouse errors like "Serve images in next-gen formats") cause user drop-offs and wasted ad spend.
- What it does: Batch compress images to WebP/JPEG/PNG client-side, and crop to exact SEO/social ratios (OG Facebook/Twitter).
- What you get: Significant image size reduction (WebP + resize, typically 50–80% depending on the source), improved Core Web Vitals (LCP) — your files never leave your browser.
3-Step Batch Workflow
Process dozens of images in seconds, directly in your browser.
Drop your images
Drag and drop product images or banner assets into the tool workspace area.
Set Format & Target Size
Choose WebP output, select aspect ratios (OG Facebook/Square) and enter target file size (e.g. 100KB).
Download all in a ZIP
Images are optimized immediately. Click to download the compressed files in a single ZIP.
What an image compressor will not tell you
Compression only solves part of it. I read the result as a System Architect with 14 years leading delivery (PMP), to show what is actually holding the page back.
- Images are often not the main culprit — third-party scripts usually are.
- Experience across Japan and Vietnam, with 40+ large systems designed and delivered.
Frequently Asked Questions
Why do images make a website load slowly?
Because raw image files have large file sizes and physical dimensions (pixels) far exceeding the website display containers. The browser must download the huge file before shrinking it to display.
What is the ideal image file size for SEO?
Ideally, keep product and blog images under 100KB, and large hero banners under 200KB. This directly improves your PageSpeed LCP score.
What is the best image format for websites?
WebP is the best choice today, offering 25-34% smaller file sizes compared to JPEG/PNG at the same visual quality. Google PageSpeed always recommends WebP.
Does this tool upload my images to a server?
No. The tool runs client-side inside your browser via HTML5 Canvas — your images are never sent over the internet.