Image Optimizer
A fast online image optimizer for faster-loading images on your website, blog, or store. Reduce image file size without changing what visitors see - works in the browser, no signup.
Use this image optimizer to optimize a photo for web, reduce image file size, and get faster-loading images across JPG, PNG, and WebP. Drop one file or a whole batch - each image is re-encoded with settings tuned to keep quality visible and file size low.
Handy before publishing a blog post, shipping a landing page, or sending a newsletter. Optionally resize at the same time, convert to WebP or AVIF for extra savings, or strip unused metadata - everything runs locally in your browser.
How to optimize an image
Four steps, no setup.
1. Upload
Drop one or many images - JPG, PNG, or WebP.
2. Pick output
Keep original, or switch to WebP / AVIF for smaller files.
3. Resize (optional)
Match the display size to cut bytes the page doesn’t need.
4. Download
Grab files one by one, or download the batch as a ZIP.
Where optimized images make a real difference
Real outcomes when images are tuned for the web.
Website speed
Smaller images mean faster page loads and better Core Web Vitals (LCP in particular).
Email deliverability
Heavy images bloat emails and can hit inbox size limits. Optimizing first keeps newsletters lean.
Mobile data
Visitors on mobile data notice every megabyte. Optimized images make the site feel snappier.
SEO signals
Pages that load faster tend to rank and convert better. Image weight is usually the biggest win.
Target file sizes for common web images
Rough upper bounds that keep pages fast.
| Use | Target | Notes |
|---|---|---|
| Hero / banner image | ≤ 200 KB | Full-width images above the fold. |
| Blog post image | ≤ 150 KB | Inline images inside content. |
| Thumbnails / avatars | ≤ 50 KB | Small UI elements repeated on a page. |
| Product image (e-commerce) | ≤ 250 KB | Needs detail without stalling the page. |
Common pitfalls
Shipping a 4000 px photo into a 400 px slot
Even after optimization, the browser has to download pixels it will never show. Resize first.
Optimizing once, uploading a fresh original later
Optimize every new asset before it goes live. A single heavy hero image can undo the rest of the page.
Using PNG for large photos
PNG is lossless and big. For photos, JPG or WebP optimize much better at the same visible quality.
Ignoring mobile
Test the page on throttled mobile data. Any image over ~300 KB is a noticeable hit there.
What this tool supports
| Feature | Supported | Notes |
|---|---|---|
| Optimize for the web | Yes | Tuned settings that protect visible quality. |
| Batch optimization | Yes | Drop many images, optimize together, download a ZIP. |
| Format suggestions | Yes | Convert to WebP or AVIF for extra savings. |
| Resize before optimizing | Yes | Serve images at the size they actually display. |
| Strip unused metadata | Yes | Remove EXIF that pages don’t need. |
| Keep original format | Yes | If you need to stay on JPG or PNG, you can. |
| Account required | No | No signup, no install. |
Frequently Asked Questions
Is the image optimizer free to use?
Yes. It’s free and runs in your browser - no signup, no install.
What does ‘optimize for web’ actually do?
It re-encodes the image with settings that keep quality visible while reducing file size: smart quality level, optional modern format (WebP / AVIF), and removal of metadata pages don’t need.
Should I convert images to WebP or AVIF?
WebP gives ~25–35% smaller files than JPG at similar quality and is widely supported. AVIF compresses even better but takes longer to encode. Either is a strong choice for modern sites.
How small should my web images be?
Aim for ≤ 200 KB for hero images, ≤ 150 KB for in-content photos, and ≤ 50 KB for thumbnails. Always resize to the display size before optimizing for the biggest wins.
Can I optimize many images at once?
Yes. Upload multiple files, optimize the batch, and download everything in a single ZIP.
Does the tool upload my images to a server?
Optimization runs in your browser. Files are processed locally and not stored on our servers.
User reviews
No reviews yet. If you used the tool, you can share feedback on our feedback page.
Ready to ship faster images?
Upload your images, pick an output, and download lighter versions ready for the web.