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Upload images
Choose one or more JPG, PNG, HEIC, AVIF, BMP, GIF, WebP, or JPEG files.
Free · private · no upload
JPG · PNG · HEIC · WEBP20KB–500KB+RUNS LOCALLY
Upload or drop images here
orUp to 20 images
JPGPNGHEICAVIFBMPGIFWebP
WebP conversion runs locally in your browser. Nothing is uploaded.
WebP output options
Image Tools
Image to WebP Converter with KB Resize
Convert JPG, PNG, HEIC, AVIF, BMP, GIF, and WebP images to efficient WebP files. Process a batch, keep transparency where possible, set optional dimensions, resize to a target KB size, and download everything privately in your browser.
How to Convert an Image to WebP
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Keep WebP efficient
Convert to WebP for smaller web-ready files with transparency support where possible.
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Set optional KB resize
Use target-KB mode when a CMS, speed budget, or upload workflow needs smaller files.
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Download WebP
Preview each result, download one WebP file, or save the whole batch as a ZIP.
Why This Image to WebP Converter Is Different
Universal image input
Convert common image files, iPhone HEIC photos, and existing WebP files into optimized WebP output.
Batch and ZIP download
Convert up to 20 images together and package successful WebP files into one ZIP.
Transparency-friendly output
Use WebP when you want smaller image files while keeping transparency support for logos, graphics, and PNG-style assets.
Target KB optimization
Set optional width, height, or target-KB limits for CMS uploads and website performance workflows.
Private local processing
Image conversion and ZIP creation happen inside your browser without a server upload.
Web Performance
Convert Images to WebP for Smaller Web Files
WebP is useful when you want lighter images for websites, blogs, ecommerce pages, and CMS uploads. It often creates smaller files than JPG or PNG while keeping strong visual quality.
Batch
Batch Convert JPG and PNG to WebP
Add multiple images when you need a folder of assets converted. Download each WebP file individually or package every successful result as one ZIP.
Exact KB
Resize WebP Output to a Target KB Size
Turn on target-KB mode when a CMS, marketplace, or speed budget needs smaller assets. You can also use dedicated pages for 50KB, 100KB, 200KB, or 500KB requirements.
Transparency
Use WebP When You Need Smaller Files With Transparency
WebP supports transparent pixels, which makes it useful for logos, graphics, and PNG-style assets. If a form rejects WebP and asks for JPG, use the WebP to JPG converter.
Privacy
Private WebP Conversion in Your Browser
Source decoding, resizing, WebP encoding, comparison previews, and ZIP creation all happen locally. Your images are not uploaded to our server during normal conversion.
Local testing notes
Tested for image to WebP conversion
We test individual and batch conversion, transparent PNG input, output dimensions, target-KB accuracy, individual downloads, and ZIP creation. Built and tested by Mozammel Hoshen Chowdhury. Review process: Editorial Policy.
Frequently Asked Questions
Which image formats can I convert to WebP?
You can convert JPG, JPEG, PNG, WebP, HEIC, HEIF, AVIF, BMP, and GIF images. HEIC and HEIF use a browser-based decoder, while other formats use browser image support.
Can I batch convert images to WebP?
Yes. Add up to 20 images, convert them in one batch, download files individually, or download all successful WebP results in one ZIP file.
Can I resize WebP output to a target KB size?
Yes. Turn on target-KB resizing and enter a limit such as 50KB, 100KB, 200KB, or 500KB. The tool adjusts WebP quality and dimensions when needed.
Does WebP keep transparency?
WebP supports transparency. Transparent PNG and WebP images can keep transparent areas when converted to WebP, depending on browser decoding support.
Why convert images to WebP?
WebP often creates smaller files than JPG or PNG, which can help websites, blogs, ecommerce pages, and CMS uploads load faster.
Are my images uploaded to a server?
No. Decoding, resizing, WebP encoding, previews, and ZIP creation run locally in your browser. Your images stay on your device.