Image Compressor
Compress and resize JPEG, PNG and WebP images privately in your browser.
Convert between JPG, PNG and WebP in your browser.
Converted in your browser. Nothing is uploaded.
Ignored for PNG, which is lossless.
Used when converting to JPG, which has no transparency.
Image Format Converter moves a picture between the three formats the web actually uses. JPG to PNG, PNG to JPG, either to WebP, and WebP back to either: all directions work, and all of it happens in your browser.
Transparency is where conversions go wrong, so the tool handles it explicitly. JPG has no alpha channel, so converting a transparent PNG to JPG has to fill the transparent areas with something. You choose the colour, with white as the default, rather than discovering black squares after the fact. Converting in the other direction adds an alpha channel that is simply fully opaque.
The size comparison is worth watching, because the right format depends on the image. A photograph is far smaller as JPG or WebP than as PNG. A screenshot of text or a logo with flat colour is often smaller as PNG and looks better too, since JPG compression smears sharp edges.
The image format converter is used by writers, developers, students, marketers and anyone else who needs the job done once without installing software. Common cases include:
WebP for most web images: it is smaller than both at comparable quality and is supported everywhere that matters. JPG for photographs that need maximum compatibility. PNG for anything with transparency, or for flat-colour graphics and screenshots where JPG would blur the edges.
JPG cannot store it, so transparent areas are filled with the background colour you pick. White is the default because it suits most pages, but a colour matching your design often looks better.
Yes, because JPG is lossy. For a photograph the loss is invisible at reasonable quality settings. For text, screenshots or sharp-edged graphics it is clearly visible, and PNG or WebP is the better choice.
Converting JPG to PNG preserves exactly what the JPG contains, but it does not restore what the original JPG compression threw away. Each lossy save loses a little more, so avoid repeated round trips.
No. Re-encoding through a canvas drops all metadata, including camera details and GPS coordinates. That is usually a privacy benefit, but it also means orientation and copyright fields are lost.
No. Conversion happens in your browser.
If the image format converter is not quite what you need, these other free tools solve closely related problems.
Compress and resize JPEG, PNG and WebP images privately in your browser.
Resize images by pixels or percentage, with aspect ratio locking.
Crop images by dragging a selection, with fixed ratio presets.
Convert SVG to PNG at a chosen size, with transparency preserved.
Convert an image to a Base64 data URI for CSS, HTML or JSON.