Convert JPG to WEBP.
Make your website faster with WEBP: smaller than JPG at the same quality. Ready to go: same dimensions, WEBP, quality 85.
- No account needed
- Never stored
- Images & PDFs
Click a file name to rename it. Use Resize / crop to give one image its own size, crop or format.
Tap an image to rename it, resize or crop it, or download it.
Why WEBP for your website
WEBP is Google’s image format for the web. A photo as WEBP is 25 to 35% smaller than as JPG at the same quality, and an image with transparency is often half the size of a PNG. Smaller images load faster, and speed counts in Google (Core Web Vitals).
How to do it
- Drop your JPGs or PNGs in the box. Up to 50 at a time.
- The settings are ready: Save as WEBP, quality 85.
- Make them the right size straight away: choose Width under Resize, for example 1920 pixels for a full-width photo.
- Download everything as a ZIP and upload them to your site.
Does WEBP work everywhere?
In all modern browsers: Chrome, Edge, Firefox and Safari (since 2020). For email and some older programs JPG is still safer.
Using WordPress? The free verklein.nu plugin converts your whole media library to WEBP or AVIF, on your own server.
How it works
Three steps to resize, optimize or convert any number of images.
Upload images
Drop, paste or pick any number of JPG, PNG, WEBP, GIF, TIFF, AVIF, HEIC or SVG files.
Choose the settings
Pick a size, format and quality. Save them as a profile so they are ready next time.
Download
Every image is processed on the server, in memory. Download them one by one or all at once as a ZIP.
Features
Powered by libvips, the same engine large photo sites use. Nothing is stored, nothing goes to third parties. The demos below are live: try them.
Resize
Set a width, a height, a percentage or a box to fit in. Give one side and the other follows the aspect ratio. "Exact" forces a size and crops the rest with smart cropping.
Need the same size for a whole batch? Drop them all at once; the settings apply to every image.
Try it: change the width on the right.
Optimize
Choose a quality from 1 to 100, or set a maximum file size in KB and let the tool find the highest quality that fits. Metadata such as GPS location is stripped by default.
Lossless mode for logos and screenshots, mozjpeg for JPG, and fine control over chroma subsampling, effort and sharpening under Advanced.
Try it: drag the line and move the quality slider.
Convert
Turn anything into JPG, PNG, WEBP or AVIF, or keep the original format. The format you pick stays selected for every image you add, no surprises.
WEBP is typically 25–35% smaller than JPG at the same quality and works everywhere; AVIF is smaller still for modern sites.
Try it: pick a format and watch the file size.
Crop
Open any image from the list and drag a crop box over it, free or locked to a ratio. Social presets for Instagram, Facebook, X, LinkedIn and YouTube set both the crop and the exact output size.
The crop only applies to that one image; everything else keeps following your global settings.
Try it: drag the box or its corners, or pick a preset.
Frequently asked questions
How much smaller is WEBP than JPG?
Usually 25 to 35% at the same visible quality. For images with transparency WEBP is often half the size of a PNG.
Does WEBP support transparency?
Yes. PNGs with a transparent background keep it as WEBP.
Is AVIF not even better?
AVIF is often smaller still, but slower to create and not viewable everywhere. For most websites WEBP is the safest choice. You can pick AVIF under Save as.
Can I turn WEBP back into JPG?
Yes, with WEBP to JPG.
verklein.nu in Chrome
Resize and compress straight from your browser: open the side panel, or right-click any image on the web. Free, no account.