WebP is an image format developed by Google and first announced in 2010. It compresses more efficiently than JPEG and PNG at comparable visual quality, and it supports lossy compression, lossless compression, transparency and animation in a single format. In practice that means noticeably smaller files without a visible drop in quality, which is why it has become a default choice for images on the web.

Why should I use WebP format images?

Images are usually the heaviest part of a web page, so reducing their size is the fastest way to make a site load quicker. Converting to WebP cuts file size significantly at comparable visual quality, which improves page load time and Core Web Vitals. WebP also supports transparency and animation, so it can replace both PNG and GIF. If you want the background first, read our breakdown of image formats and their differences . WebPImg exists to make the conversion itself quick, with no software or technical setup.

Is this image compression tool free to use?

Yes, completely free. There is no account to create, no premium tier, and no watermark added to converted files. You can convert JPG to WebP, PNG to WebP, GIF to WebP and other formats at no charge. To keep server load predictable there are two limits: 15MB per image, and 50 images per batch.

Is it safe to use this online image converter?

Yes. Your file is uploaded over HTTPS, converted to WebP in the server's memory, and sent straight back to your browser. Images are never written to disk or saved to a database, and nothing is retained once the converted file has been returned.

How do I convert JPG to WebP or PNG to WebP?

Click the 'Select Images' button and choose your JPG, PNG, GIF or HEIC files, up to 50 at a time. Set the quality slider — 75-85% is a good starting point for photographs, 85-95% for graphics containing text. Optionally set a target width or height, or lock the aspect ratio so the other dimension is calculated for you. Then click 'Convert'. Conversion usually takes a few seconds depending on file size. Download files individually, or use 'Export All' to get the whole batch as a single ZIP.

What quality setting should I use for image compression?

For photographs and detailed imagery, 75-85% is the usual sweet spot: roughly 30-40% smaller with differences that are hard to see. Graphics with text or logos hold up better at 85-95%, where edges stay crisp. Thumbnails and background images can go as low as 50-70%, since compression artifacts are less noticeable at small sizes. Start at 80% if you are unsure, and compare the results before downloading. Our guide on compressing images at the right quality covers the trade-offs in more detail.

Which browsers support WebP images?

WebP is supported by all major modern browsers, including Chrome, Firefox, Safari on macOS and iOS, and Microsoft Edge, as well as most mobile browsers. If you still need to support very old browsers, serve a JPEG or PNG fallback alongside the WebP version.

Can I resize images while converting to WebP?

Yes. Resizing happens in the same pass as the format conversion. Turn on 'Maintain Aspect Ratio' and set either a width or a height in pixels, and the other dimension is calculated to preserve proportions. Useful targets are 1200px for blog images, 800-1000px for product photos and 600px for email graphics. Use 'Fixed Resolution' when you need exact dimensions. Combining a resize with WebP conversion often reduces total file size by 70-90%.

How much smaller will my images be after WebP conversion?

It depends on the source image and the quality setting you choose. WebP typically reduces JPEG files by 25-35% at equivalent quality, so a 2MB photograph often lands around 1.3-1.5MB with no perceptible loss. PNG files usually drop 40-60%. Resizing changes the picture entirely: a 4000x3000 JPEG at 3MB, resized to 1500x1125 and converted at 80% quality, can come out around 250-350KB, roughly 90% smaller than the original.

Can I convert multiple images at once?

Yes, up to 50 images per batch. Select them all during upload, set your quality and resize options once, and every image is processed with identical settings. That consistency is useful for blog galleries, product catalogues and portfolio sites. Download the files one by one, or use 'Export All' to receive a single ZIP archive containing the whole batch.

Do I need to install software to convert images to WebP?

No. WebPImg runs entirely in the browser, so there is nothing to download or install. Conversion happens on the server in memory and the optimized files are returned to you directly. It works in Chrome, Firefox, Safari and Edge on Windows, macOS, Linux, iOS and Android. Updates are applied server-side, so you are always using the current version.

Convert and Compress Images to WebP Online Free

Free online tool to convert JPG, PNG, GIF, HEIC to WebP and compress up to 90%. Resize and batch process 50 images at once. No signup, no watermarks.

Settings

Quality: 50%Higher quality → bigger file

Fixed Resolution

Maintain Aspect Ratio

Max: 50 images, 15 MB per imageHi there! Sorry about the such a limited file size. TBH, It's a hobby project with free resources. And as you know, nothing is free in this world. If it's free then there's limitation. So, if this project is helpful to you, please consider supporting it by sharing it with others. If you have any suggestion please feel free to send an Email. Webpimg would love to hear from you.

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How to Use

Step 1: Upload Your Images
Click 'Select Images' in the Settings card, then choose your files. JPG, PNG, GIF, HEIC, TIFF, AVIF and WebP are all supported, and you can upload up to 50 images at once, which makes it practical for product photos and blog galleries. Each image appears in the preview panel on the right with its current resolution and file size.
Step 2: Set Quality Level
Drag the quality slider to control compression. Use 75-85% for photographs, 85-95% for logos and images containing text, and 50-70% for thumbnails. Higher quality means a larger file. If you are unsure, start at 80%.
Step 3: Resize Images (Optional)
To shrink oversized photos, turn on 'Maintain Aspect Ratio' and enter either a width or a height in pixels. The other dimension is calculated automatically to preserve proportions. Useful targets are 1200px for blog images, 800px for product photos and 600px for email graphics. Use 'Fixed Resolution' when you need exact dimensions, such as social media posts.
Step 4: Convert to WebP
Click 'Convert'. Each image is processed using the quality and resize settings you chose, in server memory only, and is never written to disk or stored in a database. As each file finishes you will see its new size and the percentage saved.
Step 5: Download Your WebP Images
Download images one at a time using the download icon, or click 'Export All' to package the whole batch into a single ZIP file. Each download shows how much the file size dropped. Your WebP images are then ready to upload to your site for faster page loads and stronger Core Web Vitals.

FAQs

What is WebP?
WebP is an image format developed by Google and first announced in 2010. It compresses more efficiently than JPEG and PNG at comparable visual quality, and it supports lossy compression, lossless compression, transparency and animation in a single format. In practice that means noticeably smaller files without a visible drop in quality, which is why it has become a default choice for images on the web.
Why should I use WebP format images?
Images are usually the heaviest part of a web page, so reducing their size is the fastest way to make a site load quicker. Converting to WebP cuts file size significantly at comparable visual quality, which improves page load time and Core Web Vitals. WebP also supports transparency and animation, so it can replace both PNG and GIF. If you want the background first, read our breakdown of image formats and their differences. WebPImg exists to make the conversion itself quick, with no software or technical setup.
Is this image compression tool free to use?
Yes, completely free. There is no account to create, no premium tier, and no watermark added to converted files. You can convert JPG to WebP, PNG to WebP, GIF to WebP and other formats at no charge. To keep server load predictable there are two limits: 15MB per image, and 50 images per batch.
Is it safe to use this online image converter?
Yes. Your file is uploaded over HTTPS, converted to WebP in the server's memory, and sent straight back to your browser. Images are never written to disk or saved to a database, and nothing is retained once the converted file has been returned.
How do I convert JPG to WebP or PNG to WebP?
Click the 'Select Images' button and choose your JPG, PNG, GIF or HEIC files, up to 50 at a time. Set the quality slider — 75-85% is a good starting point for photographs, 85-95% for graphics containing text. Optionally set a target width or height, or lock the aspect ratio so the other dimension is calculated for you. Then click 'Convert'. Conversion usually takes a few seconds depending on file size. Download files individually, or use 'Export All' to get the whole batch as a single ZIP.
What quality setting should I use for image compression?
For photographs and detailed imagery, 75-85% is the usual sweet spot: roughly 30-40% smaller with differences that are hard to see. Graphics with text or logos hold up better at 85-95%, where edges stay crisp. Thumbnails and background images can go as low as 50-70%, since compression artifacts are less noticeable at small sizes. Start at 80% if you are unsure, and compare the results before downloading. Our guide on compressing images at the right quality covers the trade-offs in more detail.
Which browsers support WebP images?
WebP is supported by all major modern browsers, including Chrome, Firefox, Safari on macOS and iOS, and Microsoft Edge, as well as most mobile browsers. If you still need to support very old browsers, serve a JPEG or PNG fallback alongside the WebP version.
Can I resize images while converting to WebP?
Yes. Resizing happens in the same pass as the format conversion. Turn on 'Maintain Aspect Ratio' and set either a width or a height in pixels, and the other dimension is calculated to preserve proportions. Useful targets are 1200px for blog images, 800-1000px for product photos and 600px for email graphics. Use 'Fixed Resolution' when you need exact dimensions. Combining a resize with WebP conversion often reduces total file size by 70-90%.
How much smaller will my images be after WebP conversion?
It depends on the source image and the quality setting you choose. WebP typically reduces JPEG files by 25-35% at equivalent quality, so a 2MB photograph often lands around 1.3-1.5MB with no perceptible loss. PNG files usually drop 40-60%. Resizing changes the picture entirely: a 4000x3000 JPEG at 3MB, resized to 1500x1125 and converted at 80% quality, can come out around 250-350KB, roughly 90% smaller than the original.
Can I convert multiple images at once?
Yes, up to 50 images per batch. Select them all during upload, set your quality and resize options once, and every image is processed with identical settings. That consistency is useful for blog galleries, product catalogues and portfolio sites. Download the files one by one, or use 'Export All' to receive a single ZIP archive containing the whole batch.
Do I need to install software to convert images to WebP?
No. WebPImg runs entirely in the browser, so there is nothing to download or install. Conversion happens on the server in memory and the optimized files are returned to you directly. It works in Chrome, Firefox, Safari and Edge on Windows, macOS, Linux, iOS and Android. Updates are applied server-side, so you are always using the current version.