Switch between the formats the web uses, at the size and quality you need.
Every format makes a different trade: weight, quality, transparency. The right one depends on where the picture is going.
These two are the lightest formats a browser understands today. The same photo that weighs 400 KB as a JPG often lands near 150 KB as WebP at a quality no one can tell apart, and AVIF usually goes further still. Both keep transparency, so a cut-out product shot stays cut out.
A camera photo has soft gradients, noise and thousands of tones, which JPG was designed for. It is the safest choice for a picture that has to open anywhere, from an old email client to a print shop's order form, and quality around 80–90 is enough for a screen.
Screenshots, charts, icons, logos and anything with hard edges or a transparent background belong in PNG, which stores every pixel exactly. The price is size: a photographic PNG can be several times heavier than the same image as JPG.
Three steps, and nothing to install.
Drag it onto the box, click to choose a file, or paste it with Ctrl+V (Cmd+V on a Mac). PNG, JPG, WebP, AVIF, GIF, TIFF and SVG are all accepted, up to 25 MB each. An animated GIF is read as its first frame.
Pick the format you need, set the quality, and type a width if the image is bigger than the place it will be used. Leave the width empty to keep the original dimensions. When a transparent picture has to become a JPG, choose the background colour it should be flattened onto.
The preview shows the converted image with its pixel size and its weight next to the original, so you can see whether the change was worth it before you save. One click downloads the file with a sensible name.
A few defaults here do the fiddly work for you, and a little care saves real bytes.
Phone photos often carry an orientation tag instead of real rotated pixels. That tag is applied on the way through, so a picture that looked sideways in a file list comes out upright, with the width and height swapped when needed. The rest of the metadata — camera model, GPS position, editing history, thumbnails — is dropped, which protects your privacy and usually shaves a few kilobytes off the file as well.
A width in pixels is the biggest saving available: halving both sides of a 3000 pixel photo removes three quarters of its pixels before any encoder runs, and the picture still fills a normal page. Fit inside keeps the aspect ratio and never enlarges the image; fill and crop is for a fixed frame such as an avatar, and stretch is the one to avoid unless the distortion is intended.
PNG, WebP and AVIF store transparency, JPG cannot. Turning a transparent logo into a JPG gives it a solid rectangle instead, so keep the PNG or WebP when the image will sit on a coloured page, and pick white as the background when a JPG is unavoidable.
In: PNG, JPG, WebP, AVIF, GIF, TIFF and SVG. Out: WebP, PNG, JPG and AVIF, or the same format as the original. A GIF comes out as a still image, because the converter works on one frame rather than rebuilding an animation.
PNG and the other lossless paths keep every pixel. WebP, AVIF and JPG are lossy at any quality below 100, but at 80–90 the difference is very hard to see on screen while the file gets much smaller. Converting the same photo back and forth repeatedly does degrade it, so keep the original and convert once from that.
WebP is a safe default for anything on a web page: every current browser reads it, it handles transparency, and it is much lighter than JPG. AVIF usually saves another 20–30% on photos, but very old browsers and some desktop apps cannot open it. JPG remains the universal choice for email, print orders and anywhere the file leaves the web.
Each file can be up to 25 MB, the image itself up to 50 megapixels, which covers a full-frame camera photo, and a requested width up to 8000 pixels. If a picture is refused as too large, downscale it instead of asking for a bigger one — the width field does that, and the result is usually the file you wanted anyway.
Files are processed on our server and not stored.
