Faster pages
Smaller images download faster and help reduce page load times.
Free and private tool
Free image to WebP
Free image to WebP
converter.
Convert JPG and PNG to WebP online for free. Resize images, choose your quality, and compare file sizes—all in your browser, without uploading your files.
Processed in your browser
No file uploads
1
Add your images
Up to 30 images, maximum 50 MB per file
Drop your images here
or click to choose files
PNG · JPG · WebP · AVIF · GIF · BMP
0 images0 bytes
Your files stay private. No images are sent to a server. Everything is processed on your device.
Why WebP?
Smaller files. Quality you control.
WebP is designed for efficient image delivery on the web and is supported by modern browsers.
Fine-tune your output
Adjust quality and dimensions to match how each image will be used on your website.
Privacy built in
Conversion happens on your device. Your files are never uploaded or stored on a server.
A practical guide
How to convert images to WebP
Start with your original image, then choose settings for the place it will appear.
- Choose your images.
Drop JPG, PNG, WebP, AVIF, GIF, or BMP files into the converter. You can add up to 30 images, with a 50 MB limit per file. Decoding support depends on your browser.
- Set quality and dimensions.
Start at the default quality of 82. Enable resizing if the source is larger than you need. Use “Fit within bounds” to preserve proportions or “Crop to fill” for a specific shape.
- Convert and compare.
Check the resulting dimensions and file size. Inspect fine text, edges, and gradients before replacing your source. If the WebP is larger, lower quality deliberately, resize, or keep the original.
- Download your results.
Save an individual WebP or download multiple results as a ZIP. Keep your original files for future edits. The original-download option preserves the source without resizing or background changes.
JPG to WebP for photographs
Use this JPG to WebP converter for blog photos, product photography, and editorial images. JPEG and JPG refer to the same format here. Try a modest resize first when your source is much larger than its intended display size.
A highly compressed JPEG can become larger when encoded again at a higher quality setting. The extra bytes do not recover detail already lost. Compare the result at the size visitors will see, then inspect important details at full resolution.
PNG to WebP with transparency
Convert PNG to WebP for cutout product images, illustrations, and screenshots. Leave “Transparent areas” set to “Keep transparent” to retain transparent areas, or choose white or a custom color when you need a solid background.
Small icons, flat graphics, and text-heavy screenshots need special attention: the original PNG may be smaller or visibly sharper. Keep it when the conversion offers no useful tradeoff. This tool does not offer a dedicated lossless mode.
WebP quality: smaller is only half the job
A useful image is both efficient and clear enough for its purpose. A small card thumbnail and a product zoom image should not automatically use the same dimensions or quality.
- Photographs: try 80–85 as a starting point, then compare texture and gradients. These are suggested settings, not guaranteed quality scores.
- Text and line art: check small lettering and high-contrast edges for blur or halos. A higher setting or the original file may be preferable.
- Large source images: resize for the intended layout while allowing for high-density screens where appropriate.
- Already optimized images: a second conversion may add bytes or introduce another generation of compression artifacts.
The quality slider controls the browser's encoder. It is not a percentage of original visual quality, and results can differ between browsers.
Why can a WebP file be larger than the original?
A format change is not a guarantee of compression savings. A tiny source file has little room for improvement; a heavily compressed photo may be re-encoded with more data; an enlarged image contains more pixels. Complex textures and transparency also influence the result.
This tool shows both sizes and flags a result that is not smaller. It never silently reduces your selected quality. If file size is the priority, try reducing dimensions or lowering quality in small steps, then compare again. If you need WebP for compatibility, you can still download the larger conversion knowingly.
For example, our September 21, 2026 browser check converted a synthetic, previously compressed JPEG from 22,127 bytes to a 115,984-byte WebP at quality 82. That is a test case illustrating a possible increase, not a prediction for your images or a benchmark of equivalent visual quality.
| Mode | What it does | When to use it |
|---|---|---|
| Fit within bounds | Keeps the full image and its proportions within the requested box. | Article photos and product images that should not be cropped. |
| Crop to fill | Crops from the center to match the requested shape. With enlargement disabled, the result may be smaller than requested. | Square thumbnails or consistent image cards. Check that the subject stays visible. |
| Exact dimensions | Stretches the image, which can change its proportions. With enlargement disabled, each side is capped at the source size. | Assets that must fit a specific box and can tolerate distortion. |
Private batch conversion, with clear limits
The converter reads and processes selected files on your device. It does not upload image files to our server, and no account is required. Larger batches can still use significant memory, so try fewer images at a time if your browser becomes slow.
Output is limited to 40 megapixels and 16,383 pixels per side. Unreadable files are reported individually. GIF and other animated inputs become a single still frame; this is not an animated WebP converter. SVG, HEIC, and RAW files are not accepted.
For publishing, use descriptive filenames and meaningful alternative text where the image conveys information. Check the resulting page on a phone as well as a desktop. Smaller image downloads can help performance, but a format change alone does not guarantee better search rankings. Continue with our technical SEO audit checklist.
Before you download
Image to WebP converter FAQ
Is this image to WebP converter free?
Yes. You can convert images without an account or a conversion fee. Each batch supports up to 30 files, with a maximum of 50 MB per file.
Can I convert several PNG or JPG files at once?
Yes. Add multiple files and choose shared settings for the batch. Review each result, then download individual files or a ZIP containing the converted WebP files.
Will WebP always make my images smaller?
No. File size depends on the source, dimensions, image content, and encoding quality. If the result is not smaller, the tool displays a warning and offers the original file separately.
Does converting to WebP preserve transparency?
The converter retains transparent areas when “Keep transparent” is selected. Check the output edges against your intended page background. Choosing white or a custom color replaces transparent areas with that color.
Does 100 quality mean lossless conversion?
Do not treat 100 as a lossless guarantee. This tool uses the browser's quality control and has no dedicated lossless option. Keep an original master copy for editing.
Can I convert an animated GIF?
You can select a GIF, but this tool produces a still WebP image. It does not preserve the animation. Use a dedicated animation encoder when you need every frame.
Why is a file rejected or conversion unavailable?
Check the input format and the 50 MB limit. A supported extension does not guarantee that a damaged file can be decoded. Try a current browser with WebP encoding support, reduce the output dimensions, or process fewer files.