Free online PCT to WEBP converter

Older Mac graphics may arrive as PCT files that current websites and image tools do not accept. Converting them to WEBP creates a browser-friendly image for sharing or web delivery, often at a smaller file size.

What the PCT format is

In the Graphics category, PCT refers to Macintosh PICT (Picture) files, used to store QuickDraw graphics on classic Mac systems. Files may contain bitmap images, drawing commands, or both; they commonly come from older Mac graphics and publishing applications or from archived Mac documents.

What the WEBP format is

WEBP is a raster image format used on websites and supported by current browsers. It supports lossy and lossless compression, and can preserve transparency when the source has an alpha channel. It is useful for web images where smaller downloads matter, but it does not retain editable PICT drawing commands.

How to convert PCT to WEBP

Online on 101convert.com

Upload the PCT file, choose WEBP, then convert and download the result. The page supports batch conversion and displays a per-file size limit. Before converting, you can set pages, resolution, quality, image size, maximum width, maximum height, auto orient, and strip metadata. The conversion runs on the service’s server with LibreOffice, then ImageMagick.

Offline with desktop software

ImageMagick is a free, open-source command-line option for Windows, macOS, and Linux. If the installed build can read PICT files, convert one with:

magick input.pct -quality 85 output.webp

For PICT artwork that needs a specific rasterization resolution, set density before the input filename, for example magick -density 150 input.pct -quality 85 output.webp. Adjust the quality value to trade file size against visible compression; confirm that the output dimensions and appearance are suitable.

GraphicConverter is a commercial macOS option. Open the PCT file, choose File → Export, select WEBP as the output format, set available export options, and save the converted image.

Quality and limitations

PICT drawing commands are rasterized during conversion, so the WEBP output is no longer resolution-independent or directly editable as vector artwork. Choose a sufficient output resolution before rasterization; increasing WEBP quality cannot recover detail omitted at that stage. Check transparency and edges in the result, since these depend on both the source content and the selected export settings.