Convert Image to WebP — Free, In Bulk
Convert JPG, PNG, GIF or any image to WebP — in bulk, with live previews, resize, crop, and color filters. Free, in your browser, from files or an image URL.
Converting images to WebP shrinks file size significantly compared to JPG or PNG, without giving up much visible quality — which is exactly why most modern websites default to it. This tool converts one image or an entire batch at once, with resize, crop, color filters, and sharpening available before export, and none of it ever leaves your browser or touches a server.
Why WebP is worth converting to
WebP typically produces files 25 to 35% smaller than an equivalent-quality JPG, and often more compared to PNG for photographic images. That difference compounds fast: a page with twenty product photos at even a modest 30% size reduction each shaves a meaningful chunk off total page weight — which directly affects how fast the page feels and how a search engine scores it. Image weight is usually the single biggest contributor to a slow page, which is why a bulk WebP converter is one of the highest-leverage, lowest-effort optimizations available.
What the resize and crop options actually do
Resize shrinks the image before conversion. Fill in only the width and the height scales automatically to match — same for height only. A photo displayed at 400 pixels wide gains nothing from being stored at its original 4000-pixel camera resolution; resizing down to the size it'll actually display at is consistently one of the biggest single file-size reductions available. Crop removes a fixed number of pixels from any edge before the resize step — useful for trimming a border or watermark strip without separate photo-editing software.
Color filters and pixel adjustments
Grayscale converts to black and white using a luminance formula that weights green most heavily, matching how the eye perceives brightness. Sepia applies a warm tone using a proper color matrix rather than a flat overlay. Sharpen increases contrast along edges — helpful after significant downsizing. Auto-enhance stretches the contrast range so a flat photo looks more vibrant. Despeckle applies a light smoothing pass for grainy low-light photos. All settings apply identically to every image in the batch in one pass.
Frequently asked questions
Does converting to WebP reduce image quality?
At the default quality setting, the difference is usually invisible while still cutting file size substantially. For most web use, somewhere between 75% and 85% quality is a good balance between size and appearance.
Can I convert a large batch of images at once?
Yes — add as many images as you need, by file or by URL, apply your settings once, and convert them together. Each gets an individual download link, or download every converted image as a single ZIP.
Will every browser display WebP images correctly?
Yes — WebP has been supported by all current versions of Chrome, Firefox, Safari, and Edge for years. Compatibility only becomes a concern with genuinely outdated browser versions.
Why did loading my image from a URL fail?
Some servers block cross-origin access to their images, which prevents any browser-based tool from reading the pixel data — a browser security restriction, not specific to this tool. If a URL won't load, downloading the image and uploading the file directly will work instead.
Should I use sharpen and despeckle together?
They can be combined, though they work in opposite directions — despeckle smooths detail to reduce noise, sharpen adds edge contrast back. Reasonable together on a noisy photo being scaled down significantly; for a clean source image, neither is usually necessary.