Convert JPG to WebP

WebP is typically 25–35% smaller than JPG at the same visual quality — the cheapest page-speed win on a Malaysian 4G connection.

🔒 100% client-side · zero server upload

Input

Drop images here JPEG, PNG or WebP · several at once · nothing leaves this device Choose images

Output

Convert to Quality JPEG and WebP only. PNG is lossless, so the quality setting does nothing there. Background under transparency JPEG has no transparency: transparent pixels are painted with this colour.

Results

Everything runs in this browser tab. Nothing is uploaded.

Malaysian rules & edge cases

Nine conversions, one rule. Any of JPEG, PNG and WebP can become any of the three. The output type is read from the bytes the encoder actually produced — not from the label you picked — so a file named .webp is a real WebP or the tool says why not.

Output	Transparency	Quality dial	Typical size
JPEG	No — transparent pixels take the background colour you choose (white by default)	0.3–0.95	Smallest for photos; the format every form, portal and print shop accepts
PNG	Kept	None — lossless	Largest. A photo converted from JPEG to PNG is usually 3–5× bigger, because PNG cannot throw detail away
WebP	Kept	0.3–0.95	Smallest of the three at the same visual quality; every current browser reads it, older Office installs do not

What happens to the pixels. The EXIF orientation is read first and baked into the image, so a portrait photo stays portrait once the tag that described it is gone. Then the image is redrawn through a canvas and encoded again — which is why every conversion drops the camera model, the GPS fix, the timestamp, the software tag and the colour profile. Wide-gamut photos (Display P3, Adobe RGB) come back as sRGB: slightly less saturated, never shifted in hue.

What it does not do. It does not resize: 4000 px in stays 4000 px out, except an image above 16.7 megapixels, which is scaled into the canvas limit and says so on its row. It does not read HEIC, AVIF or GIF, and it cannot make a JPEG transparent — no tool can add an alpha channel that was never recorded.

Honest limit. WebP output needs a browser that can really encode it. Safari on iOS and macOS cannot, and asking for image/webp there silently returns a PNG — so this tool checks the type of the bytes it got and, when it is not WebP, saves a JPEG named .jpg and says so. AVIF output is not offered at all: no browser's canvas can encode it (Chrome answers a request for AVIF with a PNG), and a fake would be worse than an omission.

A batch is one download. Two or more images arrive as a single ZIP, built inside the tab, with duplicate names numbered (baju.jpg, baju-1.jpg) instead of overwriting each other. Nothing leaves the device: open the Network panel, press Run, and no request appears.

Before and after

Before

logo-kedai-kopi.png — 1000×1000 — transparent background
produk-shopee-01.jpg — 1200×900 stored, EXIF orientation 6 — iPhone 15 Pro — GPS 3.1390, 101.6869

After

logo-kedai-kopi.jpg — 1000×1000 — transparency filled with white
produk-shopee-01.webp — 900×1200 upright — camera, GPS and date removed

How it works

Drop your images, or press "Load sample data" for a transparent PNG logo and a product photo that really carries camera, GPS and orientation tags.
Choose the output format. For JPEG, pick the colour that goes under transparent pixels; quality applies to JPEG and WebP only, because PNG is lossless.
Press Run, check each row — real size, real dimensions, what was removed — then download one image or the whole batch as a ZIP. Nothing left this tab.

FAQ

How much smaller will the WebP be?

At the same quality setting, 25–35% smaller is typical for photographs, and more for flat graphics. The exact number is on each row and it is signed: a minus means smaller, a plus means this particular image did not benefit — usually because it was already well compressed. The demo photo saves around 70 % because it was stored at 94 % and comes back at 82 %, so part of the gain is the quality step, not the format alone.

Will older browsers show a blank image?

No current browser does: WebP has been readable in Chrome, Edge, Firefox and Safari since Safari 14 in 2020. What breaks is older software — Word before 2021, some print shops and many Malaysian government portals still accept only JPG, PNG or PDF.

What happens if I convert on my iPhone?

Safari on iOS cannot encode WebP in a canvas: it silently returns a PNG. This tool reads the bytes it actually received, saves a JPEG named .jpg instead, and says so on the row — a mislabelled file is worse than an honest fallback.