Converters
PNG to WebP Converter
Convert PNG to WebP for a smaller file that keeps full transparency — WebP compresses harder than PNG while still supporting an alpha channel.
Convert images
Converting PNG to WebP by default — drop a PNG file below, or any JPG, PNG or WebP image; the format picker underneath lets you change the target.
Drop images here, or click to choose files
JPG, PNG or WebP · up to 25.0 MB each · 12 files at a time. Large or very high-resolution images are capped so a decode can't lock this tab.
WebP keeps transparency — no background needed.
Why this is usually the biggest size reduction among these conversions
Of the format pairs this tool offers, PNG to WebP is generally the one where the file shrinks the most, because it combines two separate advantages: WebP's encoder is more efficient than PNG's at reproducing the same image, and — unlike converting to JPG — nothing about the image has to be flattened or discarded to make the format switch. A PNG full of flat colour, like an icon or a simple graphic, still gets noticeably smaller purely from WebP's better lossless compression; a PNG with photographic content or soft gradients gets smaller still if you allow WebP's lossy mode to do some of the work. Exactly how much smaller depends entirely on what's in the image — a highly detailed PNG has more to gain than a simple two-colour icon that was already small — but this pairing consistently comes out ahead of converting into a format that has to compromise on transparency to save the same space.
WebP keeps the alpha channel a JPG target would force you to flatten
Converting the same PNG toward JPG instead involves either accepting compression loss on a photograph or losing transparency altogether on a graphic. PNG to WebP avoids the second problem entirely: WebP supports a full alpha channel, so a transparent logo, an icon with rounded corners, or a screenshot with a soft drop shadow carries its see-through areas straight through the conversion with nothing to flatten and no background colour to choose. That makes this the direction to reach for whenever you want PNG's file-size problem solved without giving up the one thing PNG was probably being used for in the first place.
Lossless WebP versus lossy WebP, and which one this tool gives you
WebP is unusual among the formats here in that it genuinely supports two distinct modes: a true lossless mode that reproduces every pixel exactly, and a lossy mode that trades some fidelity for a smaller file, the same trade JPEG makes. Worth being precise about here: the browser's own canvas encoder, which is what powers every conversion this tool performs, only exposes WebP's lossy path — there's no bit-for-bit lossless output available through this tool even at the highest quality setting, because the browser API this converter relies on doesn't offer that switch. Pushed to the top of the quality range, the result is visually indistinguishable from the PNG source for almost any practical purpose, but a workflow that needs a provably exact lossless WebP file needs a dedicated command-line encoder, not a browser canvas.
Icons, logos and UI screenshots: where this pairing is the clear win
Interface assets — app icons, exported logos, button graphics, screenshots with transparent corners — are usually PNG by default because that's the format most design tools export transparency to, and they're also usually small, simple images with a lot of flat colour, exactly the content this conversion handles best. Converting a set of interface assets from PNG to WebP typically brings a real reduction in total download weight for a website or app with no visible change and no transparency lost, which is the specific combination that makes this pairing worth doing as a batch rather than case by case.
Is WebP safe to use for images everyone needs to see in 2026
Yes, for anyone viewing the image in a current browser — WebP display support has been standard across every major browser for a long time now, and there's no meaningful audience left being served an unreadable image because of the format alone. The caveat is the same one that applies elsewhere on this tool: software outside the browser — some older desktop apps, specific upload forms, certain print workflows — can still lag behind. For anything destined purely for on-screen viewing in a browser, that caveat rarely applies; it matters more for files headed into other software.
Questions
- Is WebP actually smaller than PNG, or is it just a different format?
- Genuinely smaller in almost every case, not just different. WebP's compression algorithm is more efficient than PNG's at reproducing the same image, even in WebP's lossless mode, and that gap widens further if you allow WebP's lossy mode to trade a small, often invisible amount of fidelity for a much smaller file. The exact size reduction depends on what's in the image — a detailed photo-like PNG typically has more room to shrink than a simple two-colour icon that was already compact — but a genuine size win over the PNG original is the normal outcome of this conversion, not an edge case. This tool's before-and-after size readout shows the real number for your specific file rather than a general estimate.
- Will my transparent PNG logo still be transparent as a WebP?
- Yes. WebP supports a full alpha channel, the same as PNG, so any transparent or partially transparent pixels in the source carry straight through the conversion with nothing flattened and no background colour needed — unlike converting the same PNG to JPG, which would force every transparent pixel onto a solid fill. This is one of the format pairs on this tool where transparency survives the conversion completely, which is exactly why it's the better direction for a logo or icon than converting to JPG.
- Is WebP truly lossless, and does this tool produce lossless WebP?
- WebP the format supports a genuine lossless mode, reproducing every pixel exactly the way PNG does. This tool, though, converts through the browser's own canvas encoder, and that encoder only exposes WebP's lossy path — there's no way to request a bit-for-bit lossless WebP file through it, even with the quality setting pushed to its maximum. At the top of the quality range the visual result is effectively indistinguishable from the PNG source for normal viewing, so for most practical purposes it behaves like a lossless conversion, but it isn't provably pixel-exact the way a dedicated command-line WebP encoder's lossless flag would be. If bit-exact output is a hard requirement, that's outside what a browser-based converter can offer.
- Can every visitor's browser display a WebP image now?
- For all practical purposes, yes — every currently maintained major browser decodes and displays WebP natively, with no plugin, fallback image or special handling required. The compatibility gaps that remain are almost entirely outside the browser: certain older desktop software, some upload forms, and a handful of print or document workflows that haven't been updated to recognise the format. For anything that's simply going to be viewed on a web page, WebP support is no longer a real concern in the way it was several years ago.