Convert Images to WebP

Turn JPG, PNG, GIF, AVIF, BMP and HEIC images into WebP and cut a quarter to a third of their weight, without uploading anything.

Drop your files here

.jpg, .jpeg, .png, .gif, .avif, .bmp, .heic · up to 100 MB

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How to Convert to WebP

1
Drop your images
Up to 100 files at once, mixed formats welcome. What matters is the content, not the extension, so a .heic that is really an AVIF is handled correctly.
2
Pick quality or lossless
Quality 80 is the default and matches JPG at 90 while weighing a third less. Turn on lossless for logos, icons and anything with flat colour.
3
Download the WebP files
One file downloads directly; a batch arrives as a ZIP with the total saving shown on the page.

What WebP actually buys you

For a photograph, WebP at quality 80 is visually the same as a JPG at quality 90 and about a third smaller. For flat graphics such as logos, screenshots and charts, lossless WebP is typically three to five times smaller than the equivalent PNG while storing exactly the same pixels. On a page with a dozen images that is the difference between a site that feels instant and one that does not, which is why WebP is now supported by every browser in current use. The quality slider is the main control; the effort setting decides how long the encoder is allowed to search for a better encoding of the same picture, trading seconds for a few percent of size.

Transparency, metadata and oversized images

Transparency is carried through from PNG, GIF and AVIF sources. The transparency quality setting exists because WebP compresses the alpha channel separately, but it is forced back to maximum whenever the alpha is a hard on-or-off mask, because anything less produces a visible fringe around cut-out shapes, and that trade is never worth it. Camera metadata is dropped by default and can be kept on request, in which case the file is rebuilt as an extended WebP container with a proper EXIF chunk. Orientation is always applied to the pixels themselves, because WebP has no orientation tag to pass the problem along with. And since the format tops out at 16383 pixels per side, very wide panoramas need the maximum size option, which resizes with a high-quality Lanczos filter and never enlarges.

Your file stays on your device

Every decoder and the WebP encoder itself are WebAssembly modules running in your browser tab. Photos are never uploaded, no server queue holds them, and nothing survives closing the page. HEIC files from an iPhone, which usually carry GPS coordinates, are decoded locally too.

Frequently asked questions

How much lighter is WebP than JPG?

Usually 25-35% at matched visual quality. The saving is largest on images with smooth areas and least on very noisy photographs. Against PNG the gap is far wider: lossless WebP is commonly three to five times smaller for the same exact pixels.

Do all browsers support WebP?

Yes, every browser in current use. Chrome, Firefox, Edge and Safari have all supported it for years, on desktop and mobile. The remaining gaps are outside the browser: some older desktop software, print services and upload forms still refuse it, which is what the WebP to JPG converter is for.

When should I use lossless mode?

For logos, icons, screenshots, charts and line art: anything with flat areas and sharp edges, where lossy compression shows as smudging around text and lines. For photographs lossless is a poor trade: the file often ends up larger than the original JPG for no visible gain. The page points it out when an image has few enough colours that lossless is likely to win.

Is transparency kept?

Yes. WebP has a full alpha channel, so transparency from PNG, GIF and AVIF sources comes across intact. Soft anti-aliased edges are preserved, and hard cut-out masks are encoded at maximum alpha quality automatically so their edges stay crisp.

What does the effort setting do?

It tells the encoder how much processor time it may spend searching for a smaller encoding of the same image. It never changes the quality target, only how close to it the encoder gets. Effort 0 is fast and a little larger, 4 is the balanced default, and 6 can take two to three times longer for a few percent more saving.

Are EXIF data and GPS coordinates kept?

Only if you turn on "Keep EXIF metadata", and only for sources that have it, such as JPG and HEIC. By default the metadata is dropped, which is what you want for images going onto a website. Orientation is a separate matter: it is always applied to the pixels so the photo is the right way up.

How many files can I convert at once?

Up to 100 files, 500 MB combined, mixing formats freely. They come back as a single ZIP named pulsarkit-webp.zip and the page shows the total saved across the whole batch. One failed file does not stop the rest.

What is the difference between WebP and AVIF?

AVIF is newer and roughly 20% smaller again at the same quality, but it encodes far more slowly and support in older software is thinner. WebP is the safer default today; if you want to push further, Convert to AVIF is the next step.