Image to WebP Converter
Converted on your device. The file is never uploaded.
WebP is smaller for the same picture
WebP typically produces files 25–35 % smaller than JPEG at equivalent visual quality, and it supports transparency, which JPEG does not. For a website that is a straightforward win: same image, less to download.
Support is no longer a concern
Every current browser supports WebP — Chrome, Edge, Firefox, Safari and their mobile versions. The compatibility argument against it was real about a decade ago and is not now.
Where it still causes friction is outside browsers: some older desktop software, some print workflows and a few social platforms prefer JPEG. If you are sending a file to a person rather than publishing it on a website, JPEG is still the safer default.
Do not convert everything
WebP will not rescue an image that is simply too large in pixels. Resize first. And converting an existing JPEG to WebP re-encodes an already-compressed image, so some of the theoretical saving is lost — the best results come from an original.
Which format for what
- JPEG — photographs. Lossy, small, no transparency. Every re-save loses a little more, so avoid repeated round trips.
- PNG — screenshots, logos, anything with sharp edges or transparency. Lossless, so it never degrades, but photographs come out several times larger than JPEG.
- WebP — usually 25–35 % smaller than JPEG at the same visual quality, with transparency as well. Supported by every current browser.
- GIF — only worth it for animation. As a still image it is limited to 256 colours and beaten by PNG on both size and quality.
Common uses
- An upload form that rejects your format.
- Software that will not open the file.
- Reducing the size of a page full of images.
- Preparing something for print, where JPEG and PNG are still the safe choices.
Questions people ask
Is the image uploaded anywhere?
No. The conversion happens on a canvas in your browser.
Will I lose quality?
Converting to PNG is lossless from that point on. Converting to JPEG or WebP re-encodes the image, so keep the quality at 85 or above if it has already been compressed once.
What happens to transparency?
PNG and WebP keep it. JPEG has no alpha channel, so transparent areas become white.
Does WebP work everywhere?
In every current browser, yes. Outside the browser some older software still prefers JPEG or PNG.
Your image is not uploaded
This is the part worth being precise about, because almost every other site offering these tools works differently.
When you choose a file here, your browser reads it from your disk into memory and draws it onto a canvas. The work happens on your own machine. No copy is transmitted, because this site is a set of static files with no server behind it capable of receiving one.
The practical consequences: it works with no internet connection once the page has loaded, there is no file size limit beyond your own memory, there is no queue, nothing is retained on anyone's disk afterwards, and your photographs are not passing through a third party's infrastructure.
You do not have to take that on trust. The about page lists every network request this site makes, read live from your own browser.