Image Converter
Convert between PNG, JPG and WebP right in your browser - batch several at once, control quality, download individually or as a zip.
PNG, JPG, WebP, GIF or BMP - multiple files welcome, all converted locally
One format in, another out
Image formats each have a job. PNG is lossless and keeps transparency, so it is ideal for logos, icons and screenshots. JPEG throws away a little detail to make photos far smaller. WebP is the modern all-rounder that beats both on file size. This converter redraws your image onto a canvas and re-encodes it in the format you pick, all in the browser, so nothing is uploaded and a batch of images converts in a moment.
The transparency trap
The one gotcha when converting to JPEG is transparency. JPEG has no alpha channel, so any transparent area would otherwise render as solid black. This tool fills those pixels with white first, which is what you almost always want. If keeping transparency matters - say a logo meant to sit on a coloured background - convert to PNG or WebP instead.
Quality and batching
For the lossy formats, JPEG and WebP, a quality slider appears. Around 90 is visually lossless for most images; drop toward 75 for smaller files when a slight softening is acceptable. PNG has no quality setting because it never discards detail. Converting a whole folder? Drop them all in, convert once, and hit Download all as zip. From here you might also want the image compressor to squeeze file size further, the image resizer to change dimensions, or the favicon generator to build a full icon set from one picture.