Website Image Optimizer — free & private
Auto-convert to WebP, resize, and generate HTML snippets
Local browser workflow
Optimize images for websites instantly in your browser. No image upload. Processing stays on your device. Everything runs on your device — free, no account required, and image files are not uploaded to PictureConvert. Related: Exact File Size Image Compressor, Bulk Image Processor, and JPG to WebP Converter.
Drag & drop your image
or click to browse files
Supports: JPEG, PNG, WEBP, AVIF (max 100MB)
- Processed locally
- No image upload
- No account required
- Images not stored by PictureConvert
After you compress
Strip metadata before sharing, resize for social crops, or optimize for web delivery if the image is heading to a site.
What this tool does
This tool streamlines adding images to websites. It converts to WebP, optimizes size, and generates HTML. For the ultimate guide, see our Best Format Guide.
Trust and privacy are built into the workflow. Nothing leaves your device during processing, and there is no account setup. That makes it suitable for personal photos, client assets, product shots, and everyday creative work.
How to compress images
- Upload or drag your file into the tool above.
- Choose output settings such as quality, size, or page options.
- Preview the result before you download.
- Download the finished file for web, email, print, or sharing.
Tip: start with balanced quality settings rather than maximum compression so detail stays intact for web and sharing.
Key benefits
- WebP is supported by all modern browsers
- The tool generates a responsive <img> tag
- You get both the optimized image and the code
- Helps improve your Core Web Vitals scores
Privacy note: no files leave your device. All compress steps run locally in your browser.
Web Optimized vs Raw Image
| Feature | Web Optimized | Raw Image |
|---|---|---|
| Format | WebP / AVIF | JPG / PNG |
| File Size | Tiny | Huge |
| Loading Speed | Instant | Slow |
| SEO Score | Improved | Neutral |
Common use cases
Use this whenever you're adding images to a website. It ensures modern formats and correct sizing. If you have many images, use our Bulk Compressor.
After you finish, continue with related PictureConvert tools if you need another conversion, compression pass, crop, or metadata step — all without leaving the browser.
FAQs
Reviewed by the PictureConvert team
. This page is maintained so recommendations stay practical and current for Web Optimizer, with a focus on private, browser-local processing.
Related Tools
More options in Compress and nearby workflows.