Convert PNG, JPG, and WebP

Convert between PNG, JPG, and WebP without uploading the file or installing anything. Pixel dimensions are carried over unchanged, a preview shows the new size before you commit, and the quality slider applies only to the lossy formats, since PNG is encoded losslessly whatever you set.

Choose by what the image contains rather than by habit. PNG holds flat colour and hard edges exactly, so screenshots, logos, diagrams, and anything with text in it stay crisp and legible. JPG is built for the continuous gradients of a photograph, where its compression is close to invisible but the same setting would leave visible fringing around lettering. WebP usually beats both on size at matching quality, which is worth having on a website and awkward to hand to a colleague whose older software still refuses to open it.

Transparency is the conversion that catches people out. JPG has no alpha channel at all, so a transparent background has to become some colour. This tool fills white before encoding, because a canvas left untouched writes those pixels as solid black, and a logo that came back with a black box behind it is the bug that made the fill explicit. Keep PNG or WebP whenever the transparency has to survive.

SVG files are refused rather than converted. An SVG is a document that can carry scripts and external references, so accepting one to rasterise means opening it, and the refusal message says so and points you at PNG or WebP instead. This is a deliberate choice, not a missing feature.

Converting does not undo damage already done. A JPG that was saved at low quality has lost that detail permanently, and moving it to PNG only preserves the artefacts at a larger file size. Each further lossy save adds a little more loss, so convert once from the best original you have rather than passing a file through several formats. The work happens in a browser worker, so the image itself never travels anywhere.