Image to WebP Converter with Resize
Convert to WebP and set the width or height in the same step.
Resize images and convert them to WebP in one step — set a width or a height, the aspect ratio is kept, and the files are encoded in your browser with no upload. Up to five images per batch, downloaded as a zip.
A 4000-pixel photo shown in a 400-pixel box carries about a hundred times the pixels the box can show.
Resize and convert in one go, in your browser. Nothing uploaded.
Drop your images here
PNG, JPEG or WebP · up to 5 images · max 10 MB each · nothing is uploaded
Runs in your browser — nothing is uploaded, nothing is stored. Close the tab and it is gone.
Recommended browser: Works best in Google Chrome. Also tested in Firefox and Microsoft Edge; Safari opens everything except saving as WebP, and the tool tells you when that is the case.
After the resize
Your pictures, sized for the page they sit on
Left: photos straight off the camera, several megabytes each, on a page a phone has to download over mobile data. Right: the same photos resized to the box they sit in and saved as WebP. They weigh a fraction of what they did and still look sharp on a phone screen.
- Every image sized for where it sits, not for the camera
- Saved as WebP, which every current browser displays
- A page that opens quickly on mobile data
- 900+ projects
- since 2017
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- 9+ years
- building WordPress and Next.js sites
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“Great work by Sandipan.”
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Bring the site or the page you are working on. I lead every project, and on the call we go through it together and decide what to do first.
How it works
How to use the Image to WebP Converter with Resize
- 01Drop your images onto the tool.
- 02Type a width or height in pixels — the aspect ratio is kept.
- 03Set the quality and download the WebP files, named ready for the web.
In more depth
About the image to webp converter with resize
Resize first, then compress — the order matters
Compression removes detail you cannot see; resizing removes pixels you never show. A 4000-pixel-wide photo displayed 1200 pixels wide carries about eleven times the pixels the screen can use (3.3 times in each direction), and no quality setting recovers that waste. Set the width to what the layout needs and the file shrinks before compression even starts.
The filename records the new size (photo-1200x800.webp), so you can keep several versions of one image apart.
Typical sizes for common uses
Hero banners: 1600–1920 px wide. Blog and article images: 1200 px. Product and card images: 800 px. Thumbnails: 400 px. Social previews (Open Graph): 1200 × 630 px — use the crop tool for that one, since it needs an exact ratio.
FAQ
Image to WebP Converter with Resize — questions
What size should images be for a website?
- As wide as the space they fill, and no wider. Full-width hero images rarely need more than 1600–1920 px; blog and product images are usually fine at 1200 px or less. Anything larger is downloaded and then thrown away by the browser.
Will my images be stretched?
- No. Give one dimension and the other follows the original proportions. If you give both, the image is scaled to that exact size — use the crop tool instead if you want to fill a fixed box without distortion.
Can I make images larger?
- You can, but upscaling adds no detail — it only makes a soft picture bigger. Resize down to the size you need.
Are the files uploaded anywhere?
- No. Resizing and conversion happen on your device. Nothing is sent to a server or stored.
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