What happens to transparency when converting to JPG?

JPEG has no alpha channel, so transparent pixels are filled with a solid background colour. Use PNG or WebP if transparency matters.

Is WebP safe to use now?

Yes. Every current browser decodes it, including Safari since version 14. Keep a JPEG or PNG fallback only if you must support very old clients.

Can it convert HEIC files from an iPhone?

Not yet — browsers cannot decode HEIC natively. That tool is planned and will use a WebAssembly decoder rather than an upload.

Image Converter

Convert images between JPG, PNG and WebP, with quality control for the lossy formats.

Processing: This tool runs entirely in your browser. Your input and any file you open stay on your device — nothing is uploaded to a server. Limited by your device's memory rather than a server quota. Very large images may take several seconds.

How to use the image converter

Choose an image.
Select the output format, and a quality level for JPG or WebP.
Download the converted file.

About this tool

Each format is good at something different. JPEG is efficient for photographs and has no transparency. PNG is lossless with an alpha channel, ideal for logos, screenshots and anything with hard edges, but heavy for photos. WebP does both jobs and is typically 25–35% smaller than the equivalent JPEG or PNG, with support in every current browser.

One conversion needs care: PNG to JPEG discards transparency, and transparent areas have to become a solid colour. This tool fills them with white by default, which is right for most screenshots and wrong for a logo destined for a dark background — keep that as PNG or WebP.

Common uses

Converting screenshots to WebP to cut page weight.
Turning a PNG export into a JPEG for a system that rejects PNG.
Producing a transparent PNG from a WebP asset.

Frequently asked questions

What happens to transparency when converting to JPG?: JPEG has no alpha channel, so transparent pixels are filled with a solid background colour. Use PNG or WebP if transparency matters.
Is WebP safe to use now?: Yes. Every current browser decodes it, including Safari since version 14. Keep a JPEG or PNG fallback only if you must support very old clients.
Can it convert HEIC files from an iPhone?: Not yet — browsers cannot decode HEIC natively. That tool is planned and will use a WebAssembly decoder rather than an upload.

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