Dimensions before weight
Reduce the maximum edge when a photo will never be displayed at full resolution.
Practical guide for faster sites
How to optimize images for a website
Prepare lighter images before upload: choose the right dimensions, create WebP copies, and always keep the original.
Optimize images nowLocal processing: images are never uploaded to our servers.
Heavy images slow a site down, even when they look great
Photos and graphics are often the heaviest resources on a page. If an image is much larger than the space where it will be displayed, the browser downloads bytes a visitor will never see.
The goal is not to crush quality: it is to prepare a copy suited for the web. In practice, that means dimensions matching the layout, a modern format such as WebP, and sensible compression.
What to control
Three choices that really matter
A format made for the web
WebP often creates lighter files than JPG and PNG while keeping good visual results.
A copy, not a risk
Always keep the source file and publish an optimized copy.
Simple process
Prepare images before upload
Choose images
Add JPG, PNG, or WebP from your computer or phone.
Set quality and dimensions
Balanced is a good starting point; limit the maximum side only when it helps.
Download and publish
Check the size comparison and use the new copies on your site.
Checklist before uploading a website image
- Use dimensions proportionate to where the image will appear, not the camera original.
- For photographs and editorial images, try WebP before using very heavy JPG files.
- Keep filenames descriptive and add alt text that explains the image in the page context.
Frequently asked questions
Optimizing images for the web
Does WebP automatically improve SEO?+
It is not an SEO shortcut by itself. A lighter file can help page performance; you still need useful content, relevant images, proper dimensions, and sensible alt text.
What dimensions should website images have?+
It depends on the layout. Prepare a copy close to the maximum width where it will be displayed and keep the original for other uses. A hero image often needs more pixels than a thumbnail.
Does the tool modify the original?+
No. It creates a new WebP copy with -web in the filename; the original stays on your device.
Prepare lighter copies before publishing
Reduce image weight directly in the browser and use the before/after comparison to decide which copy to upload.
Optimize images now