WebP (colloquially pronounced 'weppy') is actually quite old if you search for it. It was first announced back in 2010 and has since been upgrading and improving until its current state. WebP was developed by Google & offers strong compression compared other image formats out there AKA to lossy compressed true-color graphics on the web along with producing files that were smaller than JPEG files for comparable image quality.

Why should I use webp format image?

Before we start explaining why you need to use WebP formatted image file, you need to understand all the image formats and their differences . However, to speed things along let's say converting to WebP can reduce file size significantly for comparable visual quality. Which can help pages load faster and improves overall website performance. That's why WebPImg was built — to make this process smooth without any technical setup. WebP image format supports both lossy and lossless compression, transparency, animation and also supported by most modern browsers out there.

This image compression tool, is it free to use?

Absolutely, it's completely free to use without any hidden costs or upgrade to premium account like other websites out there. That's why you can convert or compress images in any format from JPG to WebP, PNG to WebP, GIF to WebP etc. without any charges. WebPImg does not add any watermarks on converted files. However, to reduce pressure and payload on the server, the site has put a little bit of restrictions on image size. It's 4MB per image up to 50 images at a time and it's completely free without any account signin.

Is it safe to use this online image converter?

Of course, when images begin converting or compressing the system processes those in the server's memory (RAM). After you upload an image file it’s converted to WebP in server memory and then sent back to your browser. Any kind of image files are not stored on disk or in any database after processing. Transfers are protected over HTTPS. So you can optimize your images without any worry. Transfers are protected over HTTPS.

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

1st you need to click the 'Select Images' button and choose your JPG, PNG, GIF or any other image files (up to 50 images). Then adjust the quality from the slider (75-85% is a good starting point for photos while 85-95% pretty good for graphics with texts). Optionally there are the resize settings to set image height and width or set image size according to aspect ratio , then click 'Convert' button. Image conversion typically completes quickly depending on image file sizes. You can also download image files individually or click the 'Export All' button to download a ZIP file combining all images.

What quality setting should I use for image compression?

Hmm,,, that's an interesting question. If you have photographs and complex imagery then 75-85% can be an optimal balance, shrinking image by 30-40% while visual differences in compressing image with proper quality remain imperceptible.Then there’s graphics oriented images with text or logos, those will have decent quality from 85-95% to preserve clarity. Thumbnails and background images can use 50-70% since compression artifacts are less noticeable at smaller sizes. When uncertain, start at 80% as a reliable baseline. WebPImg makes it easy to experiment with these settings and see the results instantly before downloading.

Which browsers support WebP images?

WebP is supported by all major modern browsers, including Chrome, Firefox, Safari (macOS/iOS), and Microsoft Edge, as well as most mobile browsers. If you need legacy support, you can serve fallback formats (like JPEG/PNG) where necessary.

Can I resize images while converting to WebP?

Of course you can! The image 'Resize' feature works alongside different image format conversion. Which enables maintaining aspect ratio and specifying a target width/height calculated automatically to preserve proportions. This works well for blog images (e.g. 1200px width), product photos (e.g. 800-1000px) and email graphics (e.g. 600px maximum). Alternatively, using 'Fixed Resolution' for exact dimensions (height /width). Combining resizing with WebP conversion can achieve 70-90% total file size reduction.

How much smaller will my images be after WebP conversion?

Well you see, that depends on your image size & quality settings actually. However,generally WebP compression reduces JPEG/JPG images by 25-35% at equivalent quality levels. For example, a 2MB image in size might compress to 1.3-1.5MB as WebP without perceptible quality loss. PNG files often see 40-60% reduction. On the other hand when combining format conversion with resizing, results become more dramatic, like a 4000x3000 JPEG (3MB) resized to 1500x1125 and converted at 80% quality might reach 250-350KB, roughly 90% smaller than the original. If you're optimizing images for a website, our converter is a practical way to get those numbers without needing any dedicated software.

Can I convert multiple images at once?

Yep! Like other sites WebPImg does not restrict users to 5/10 images, it supports batch processing up to 50 images in a single conversion. You can select multiple images during upload then configure your preferred quality and resize settings and all images process with identical parameters. This proves useful for blog galleries, product catalogs, or portfolio websites. Download files individually or use Export All to receive a single ZIP archive containing all converted images.

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

Definitely not! WebPImg is an online base software application so there’s no need for any separate installation. To optimize image processing for everyone, this online image converter images entirely within the server’s memory(RAM) and your web browser like - Chrome, Firefox, Safari, Edge or any modern browser on Windows, macOS, Linux or mobile devices. Simply navigate to the website and begin converting immediately. Updates happen automatically on the server side without manual downloads.

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
Head to 'Settings' card -> click the 'Select Images' button. Next, choose your image file(s), either JPG, PNG, GIF, or another type and you can uploaded 50 photos at once, making it ideal for product photos or blog galleries. Your images will show in the preview panel （right side card） showing their current image file’s resolution & size.
Step 2: Set Quality Level
Drag the quality slider to control compression. You can get great balance of size and quality of your image adjusting to 75-85%, if you have logos or images with text adjusting to 85-95% will get more than decent quality, or 50-70% for thumbnails. The slider shows higher quality means bigger files. Not sure? Start at 80%.
Step 3: Resize Images (Optional)
Want to shrink those huge photos? Just toggle on 'Maintain Aspect Ratio' option and enter a width or height (in pixels) calculates automatically. You can try to use these resolutions (e.g. 1200px for blog images, 800px for product photos or 600px for emails) to get optimal results. Or use Fixed Resolution for exact dimensions like social media posts.
Step 4: Convert to WebP
Hit the Convert button and watch your images process in seconds. The tool uses your quality and resize settings to create optimized WebP files. Everything happens in RAM — we never save your files. You'll see the new file size and compression percentage for each image in real-time.
Step 5: Download Your WebP Images
You can Download images one at a time by clicking the download icon or clicking 'Export All' to download all images as a ZIP file. Each download shows the file size reduction achieved. Your optimize version of WebP images are ready to use on your website for faster loading and better SEO.

FAQs

What is WebP?
WebP (colloquially pronounced 'weppy') is actually quite old if you search for it. It was first announced back in 2010 and has since been upgrading and improving until its current state. WebP was developed by Google & offers strong compression compared other image formats out there AKA to lossy compressed true-color graphics on the web along with producing files that were smaller than JPEG files for comparable image quality.
Why should I use webp format image?
Before we start explaining why you need to use WebP formatted image file, you need to understand all the image formats and their differences. However, to speed things along let's say converting to WebP can reduce file size significantly for comparable visual quality. Which can help pages load faster and improves overall website performance. That's why WebPImg was built — to make this process smooth without any technical setup. WebP image format supports both lossy and lossless compression, transparency, animation and also supported by most modern browsers out there.
This image compression tool, is it free to use?
Absolutely, it's completely free to use without any hidden costs or upgrade to premium account like other websites out there. That's why you can convert or compress images in any format from JPG to WebP, PNG to WebP, GIF to WebP etc. without any charges. WebPImg does not add any watermarks on converted files. However, to reduce pressure and payload on the server, the site has put a little bit of restrictions on image size. It's 4MB per image up to 50 images at a time and it's completely free without any account signin.
Is it safe to use this online image converter?
Of course, when images begin converting or compressing the system processes those in the server's memory (RAM). After you upload an image file it’s converted to WebP in server memory and then sent back to your browser. Any kind of image files are not stored on disk or in any database after processing. Transfers are protected over HTTPS. So you can optimize your images without any worry. Transfers are protected over HTTPS.
How do I convert JPG to WebP or PNG to WebP?
1st you need to click the 'Select Images' button and choose your JPG, PNG, GIF or any other image files (up to 50 images). Then adjust the quality from the slider (75-85% is a good starting point for photos while 85-95% pretty good for graphics with texts). Optionally there are the resize settings to set image height and width or set image size according to aspect ratio, then click 'Convert' button. Image conversion typically completes quickly depending on image file sizes. You can also download image files individually or click the 'Export All' button to download a ZIP file combining all images.
What quality setting should I use for image compression?
Hmm,,, that's an interesting question. If you have photographs and complex imagery then 75-85% can be an optimal balance, shrinking image by 30-40% while visual differences in compressing image with proper quality remain imperceptible.Then there’s graphics oriented images with text or logos, those will have decent quality from 85-95% to preserve clarity. Thumbnails and background images can use 50-70% since compression artifacts are less noticeable at smaller sizes. When uncertain, start at 80% as a reliable baseline. WebPImg makes it easy to experiment with these settings and see the results instantly before downloading.
Which browsers support WebP images?
WebP is supported by all major modern browsers, including Chrome, Firefox, Safari (macOS/iOS), and Microsoft Edge, as well as most mobile browsers. If you need legacy support, you can serve fallback formats (like JPEG/PNG) where necessary.
Can I resize images while converting to WebP?
Of course you can! The image 'Resize' feature works alongside different image format conversion. Which enables maintaining aspect ratio and specifying a target width/height calculated automatically to preserve proportions. This works well for blog images (e.g. 1200px width), product photos (e.g. 800-1000px) and email graphics (e.g. 600px maximum). Alternatively, using 'Fixed Resolution' for exact dimensions (height /width). Combining resizing with WebP conversion can achieve 70-90% total file size reduction.
How much smaller will my images be after WebP conversion?
Well you see, that depends on your image size & quality settings actually. However,generally WebP compression reduces JPEG/JPG images by 25-35% at equivalent quality levels. For example, a 2MB image in size might compress to 1.3-1.5MB as WebP without perceptible quality loss. PNG files often see 40-60% reduction. On the other hand when combining format conversion with resizing, results become more dramatic, like a 4000x3000 JPEG (3MB) resized to 1500x1125 and converted at 80% quality might reach 250-350KB, roughly 90% smaller than the original. If you're optimizing images for a website, our converter is a practical way to get those numbers without needing any dedicated software.
Can I convert multiple images at once?
Yep! Like other sites WebPImg does not restrict users to 5/10 images, it supports batch processing up to 50 images in a single conversion. You can select multiple images during upload then configure your preferred quality and resize settings and all images process with identical parameters. This proves useful for blog galleries, product catalogs, or portfolio websites. Download files individually or use Export All to receive a single ZIP archive containing all converted images.
Do I need to install software to convert images to WebP?
Definitely not! WebPImg is an online base software application so there’s no need for any separate installation. To optimize image processing for everyone, this online image converter images entirely within the server’s memory(RAM) and your web browser like - Chrome, Firefox, Safari, Edge or any modern browser on Windows, macOS, Linux or mobile devices. Simply navigate to the website and begin converting immediately. Updates happen automatically on the server side without manual downloads.