Quick answer: To optimize images for a website, add them here: the page is set to WebP at 80 percent quality with a 1920-pixel maximum, which usually cuts phone photos by 90 percent or more with no visible loss on screen. Switch to JPG if your platform does not accept WebP. Nothing is uploaded.
Big images are the most common reason a page loads slowly. Drop in a folder's worth of photos and get small WebP files sized for the web, ready to upload to your site, shop or blog.
Optimize images for web at a glance
| Price | Free, no sign-up, no watermark, no daily limit |
|---|---|
| Accepts | JPG · PNG · WEBP |
| Largest file | 50 MB per file, several files at once |
| Where it runs | In your browser: files are never uploaded |
| Works on | Any modern browser on iPhone, Android, Windows, Mac and Linux |
| Send the result | Download it, or send it free with a link or by email (up to 20 GB) |
How to use the optimize images for web
- Choose the images for your page, shop or blog post.
- Keep WebP, 80 percent and 1920 px, or pick 1280 px for images shown smaller.
- Press Optimize images.
- Download them as a ZIP and upload them to your site.
Why these settings
| Setting | Why |
|---|---|
| WebP | Typically 25 to 35 percent smaller than JPG at the same visual quality, and shown by every current browser |
| 1920 px maximum | Full-width on Full HD screens; larger only costs bytes. Use 1280 px for images in a text column |
| 80 percent quality | Indistinguishable from the original on screen for most photos |
Re-encoding also removes camera metadata such as the GPS location, which you rarely want on a public website.
Faster pages, better rankings
Page speed, and especially how quickly the largest image appears (Largest Contentful Paint), is part of Google's Core Web Vitals. A 4 MB hero photo can take seconds on mobile data; the same photo optimized here is often 150 to 300 KB. Serve the image at the size it is displayed, and give it width and height attributes so the page does not jump while it loads.
When to keep JPG or PNG
- Some email tools, older CMS plugins and marketplaces still reject WebP: choose JPG under Save as.
- Logos and icons with flat colours are often smaller as PNG with fewer colours: use Compress PNG, or SVG if you have it.
- Safari cannot save WebP; it falls back to JPG or PNG. Use Chrome, Edge or Firefox for WebP.
How this compares
| This tool | Online converters (e.g. TinyPNG, iLoveIMG or CloudConvert) | Desktop apps (e.g. Photoshop) | |
|---|---|---|---|
| Your file is uploaded | No | Yes, to their servers | No |
| Install or account | None | Account for some features | Install needed |
| Watermark or daily limits | None | Common on free plans | Depends on the app |
Plans of other services change; check their sites. More image tools.
Frequently asked questions
What is the best image size for a website?
About 1920 pixels wide for full-width images and 1200 to 1280 pixels for images inside a text column, in WebP or JPG at around 80 percent quality.
Do all browsers support WebP?
Yes, all current browsers display WebP, including Safari on iPhone and Mac.
How much smaller will my images get?
Phone photos often go from several MB to 150 to 400 KB each. The result shows the saving for every file.
Can I optimize a whole folder at once?
Yes. Select all the images; they are processed one after the other and downloaded as a ZIP.
Are my images uploaded?
No. They are optimized in your browser.
Need to send a big file?
Send files up to 20 GB with a download link or by email. Free, no account needed, original quality.
Send large files free