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WebP Converter

Image Tools

A free WebP converter that turns JPG and PNG into smaller WebP — or converts WebP back to PNG/JPG — entirely in your browser, with no upload and no signup.

Runs entirely in your browser
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About WebP Converter

This free WebP converter is bidirectional: it converts JPG and PNG to WebP for dramatic file-size savings, and converts WebP back to PNG or JPG when a legacy tool can't read it — all in your browser, with no upload. WebP is Google's image format, and it's one of the highest-impact page-weight wins available: WebP lossy images are 25–34% smaller than JPEG at equivalent quality, and WebP lossless images are about 26% smaller than PNG, while still supporting transparency. Because it now decodes natively in every modern browser, switching your site's images to WebP is mostly upside. Drop a file into this WebP converter, pick a direction, and download an optimized result in seconds.

The tool exposes two modes. Use “Convert to WebP” to re-encode a JPG, PNG, or even an existing WebP into a smaller WebP — this is where jpg to webp and png to webp conversions happen, and transparency from a PNG carries straight through to WebP's alpha channel. Use “Convert from WebP” when a downstream tool, older CMS, or print pipeline doesn't speak WebP yet, choosing PNG for a lossless result (webp to png) or JPG for a smaller lossy one (webp to jpg). A quality slider controls the lossy formats; 80–90% is a safe default that's usually indistinguishable from the original. Everything runs via the browser's Canvas API, and a live before/after byte comparison shows exactly how much you saved.

Because this WebP converter is 100% client-side, it's a private way to optimize sensitive images — internal screenshots, product mockups, document scans — none of which is transmitted to a server, unlike CloudConvert, Pixelied, or Elementor's hosted tools that upload your files. There is no signup, no watermark, no ads, and no rate limit; towebp.io is the closest comparable in that it also runs locally. Whether you're doing image optimization to shave seconds off page load, converting a batch of photos for a modern web build, or just need to convert to webp for a CMS that prefers it, this tool handles both directions without ever sending your images off your machine. For maximum savings, pair it with the Image Compressor; to move between JPG and PNG specifically, use the dedicated JPG to PNG and PNG to JPG converters.

How to use

  1. 1

    Pick a direction in the WebP converter

    Choose “Convert to WebP” or “Convert from WebP” using the tabs at the top. This free WebP converter handles both directions, so you never need a second tool for the round trip.

  2. 2

    Drop your file

    When converting to WebP, drop a JPG, PNG, or even a WebP. When converting from WebP, drop a .webp file. The file loads straight into your browser — nothing is uploaded.

  3. 3

    Pick the output format if applicable

    When converting from WebP, choose PNG (lossless, larger) or JPG (smaller, lossy) from the output format dropdown, depending on whether transparency or size matters more.

  4. 4

    Adjust quality for lossy outputs

    For JPG or lossy WebP output, use the quality slider. 80–90% is usually a good default — visually indistinguishable from the original at a fraction of the size.

  5. 5

    Download the converted file

    Check the before/after size comparison, then click Download to save the result. It's ready to drop into your site, CMS, or asset pipeline.

Examples

JPG to WebP at 85%

Typical photo conversion — significant savings with no visible quality loss.

Output

photo.jpg (450 KB) → photo.webp (290 KB) — 36% smaller

PNG to WebP (lossless)

WebP also has a lossless mode that beats PNG for many images.

Output

graphic.png (180 KB) → graphic.webp (110 KB) — 39% smaller

Frequently asked questions

How do I use this free WebP converter?+

Pick a direction with the tabs — “Convert to WebP” or “Convert from WebP” — then drop your file. When converting to WebP, drop a JPG, PNG, or WebP and adjust the quality slider. When converting from WebP, drop a .webp file and choose PNG or JPG as the output. The WebP converter processes everything in your browser and shows a before/after size comparison, then you click Download. No account, no install, and no quota on how many images you convert.

Is the WebP converter free, with no signup or watermark?+

Yes. No account, no email gate, no daily quota, no upgrade upsell, and no watermark stamped on your output. The WebP converter loads once and runs entirely in your browser, so the only cost is your own CPU. There are no ads injected into the page or your downloaded file, and no rate limit. It's a genuinely free tool, not a free tier that nags you to pay for more conversions.

How much smaller are WebP files than JPG or PNG?+

WebP lossy images are typically 25–34% smaller than a JPEG at equivalent visual quality, and WebP lossless images are around 26% smaller than the equivalent PNG. Real-world savings vary with the image content and your quality setting, but for most photographs and graphics the reduction is substantial — which is why converting site images to WebP is one of the most effective page-weight optimizations you can make without any visible quality trade-off.

Can I convert WebP back to PNG or JPG?+

Yes — that's the whole point of the bidirectional design. Switch to “Convert from WebP”, drop your .webp file, and choose PNG for a lossless result (best when the image has transparency or sharp edges) or JPG for a smaller lossy result (best for photos). This is useful when an older application, a CMS, or a print pipeline doesn't yet support WebP and needs a more universally compatible format.

Is WebP supported in all browsers?+

All current browsers decode WebP natively — Chrome, Edge, Firefox, Opera, and Safari 14 and later. Very old Safari versions and some legacy or embedded environments don't, which is exactly when the “Convert from WebP” direction is handy for generating a fallback. Many modern sites ship WebP with a JPG or PNG fallback via the HTML `<picture>` element so every visitor gets a working image regardless of browser age.

Should I use lossy or lossless WebP?+

WebP supports both. Lossy (the default here) gives the smallest files and is ideal for photographs — at 80–90% quality the difference from the original is invisible. Lossless is better for graphics, logos, screenshots, and anything with sharp edges or text where compression artifacts would show. If you need pixel-perfect graphics, raise the quality toward 95% or keep the source as PNG and convert only where the savings justify it.

Does converting to WebP preserve transparency?+

Yes. WebP has an alpha channel just like PNG, so converting a transparent PNG to WebP keeps the transparency intact — you get the smaller file size without flattening the image onto a background. Converting a JPG to WebP produces an opaque WebP, simply because JPG had no transparency to begin with. If transparency matters, start from a PNG (or another WebP) rather than a JPG.

Should I switch all my site images to WebP?+

For most modern sites, yes — the file-size savings are substantial and browser support is effectively universal. The common pattern is to serve WebP as the primary format with a JPG or PNG fallback via `<picture>` for the small slice of visitors on older browsers. The one caveat: if a specific workflow or third-party tool in your pipeline can't read WebP, keep an original copy or use the “Convert from WebP” direction to regenerate a compatible version.

How does this compare to CloudConvert, Pixelied, and toWebP.io?+

CloudConvert, Pixelied, and Elementor's tool upload your image to their servers to convert it, then send the WebP back — convenient, but your file leaves your device. This WebP converter, like towebp.io, runs entirely client-side using the Canvas API: no upload, no signup, no watermark, and it works in both directions. The trade-off is that we skip cloud features like saved projects and huge bulk queues in favor of a fast, private conversion you can trust with sensitive images.

Are my images uploaded to a server, or converted in my browser?+

Everything is converted in your browser. The tool uses the Canvas API to decode and re-encode your image on your own device — there is no network call. Open DevTools, switch to the Network tab, and convert a file: you'll see zero requests. This is why the converter is safe for internal screenshots, product mockups, and document scans that must never be transmitted to a third-party server.

Can I convert JPG to WebP and PNG to WebP, or only one format?+

Both, plus WebP-to-WebP re-encoding. In the “Convert to WebP” direction the tool accepts JPG, PNG, and existing WebP files as input and outputs an optimized WebP. JPG to WebP is the most common path for photos; PNG to WebP is ideal when you want to keep transparency while shrinking the file. The quality slider lets you tune the lossy output, and the before/after readout confirms the savings for each conversion.

How big a file can I convert before the browser stalls?+

Tens of megapixels convert smoothly on a modern laptop. Very large images — a 50+ megapixel panorama, say — may briefly stall the browser while the full bitmap sits in memory during the Canvas step. If you hit a limit, downscale first with the Image Resize tool and then convert. For typical web images, photos, and screenshots you'll never notice a delay, and the WebP output will be markedly smaller than the source.