Image Tools
Convert one JPG or PNG, or a batch of up to 20 images, to static WebP files at the same pixel dimensions. Apply one Quality setting, compare every result and download files separately or together as a ZIP. Processing stays in your browser.
Simple workflow
How to use Image to WebP
- 1Choose or drop one or more JPG, JPEG or PNG images. You can add more or remove an item before converting.
- 2Set one WebP Quality for the batch, then select Convert to WebP. Changing Quality clears earlier outputs so they cannot look current.
- 3Compare each source and result, download a file separately, or use Download all when at least two conversions succeed.
Good to know
Frequently asked questions
Which source formats can I convert to WebP here?
This tool accepts up to 20 JPG, JPEG and PNG images and creates static WebP outputs. Each image can be up to 25 MB and 40 megapixels, with a 100 MB combined limit. It does not accept GIF, HEIC or AVIF files or create animations.
Will a transparent PNG stay transparent in WebP?
When your browser supports WebP output, the conversion can retain the PNG's transparent areas. It does not add a solid background. An opaque JPG remains opaque; converting it does not remove its background.
Does Quality 100 guarantee lossless WebP?
No. Quality is passed to your browser's image encoder, and this tool has no separate lossless WebP setting. A value of 100 does not guarantee a lossless result. Compare fine details in the preview before saving.
Why can WebP results differ between browsers?
The browser supplies the encoder, so output support, file size and appearance can vary. UtilSprout verifies the returned MIME type and WebP signature before offering a download. If usable WebP output is unavailable, try a browser that supports it.
Will converting to WebP reduce the file size?
It may, but there is no guaranteed reduction or exact target size. The source image, Quality setting and browser encoder affect the result. A valid WebP is still available when it is larger, and the result labels that increase instead of calling it a saving.
Practical guide
Convert once, then compare the whole WebP batch
Convert several JPG or PNG images to WebP in one batch, compare each result with its source, then download files individually or together as a ZIP. The converter keeps each image's decoded pixel width and height and never runs the batch through resizing logic.
One quality value applies to the current batch. WebP is not guaranteed to be smaller, so each result says whether bytes were saved or whether the output became larger. Transparent PNG pixels can remain transparent when the browser encoder supports usable WebP output; an opaque JPG remains opaque.
Browser encoders can produce different file sizes or fine-detail results. Quality 100 does not guarantee lossless encoding. Keep the source files, inspect text and edges, and convert again after choosing another quality.
Worked example
Convert a small website image batch
- Start with
- banner.jpg is 1800 × 600 pixels and logo.png is 800 × 800 pixels with transparency.
- Choose
- Add both files, set Quality to 80% and select Convert 2 images to WebP.
- You get
- banner.webp remains 1800 × 600 and logo.webp remains 800 × 800. Compare each source and result size, inspect the images, then download them separately or together as a ZIP.
Tips for a useful result
- A rejected or failed file does not remove valid batch items. Review the item-specific message and download any successful results.
- Duplicate source basenames receive numbered WebP filenames so ZIP entries do not overwrite one another.
- If an image is much larger than its intended display size, resize it first or choose WebP directly in Image Resizer.
Understand the details
Related reference guide
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