tinyWebpConv

tinyWebpConv is a small Go command-line tool that converts common image formats into .webp. It also includes a small local browser GUI.

• Easy to ship as a single Windows .exe
• End users do not need to install Go
• Good fit for a simple standalone converter

• PNG
• JPEG
• GIF
• BMP
• TIFF

You need Go installed only to build the binary.

go mod tidy
go build -o tinywebpconv .

On Windows:

go build -o tinywebpconv.exe .

Convert with default output name:

./tinywebpconv -in photo.png

Convert with explicit output and quality:

./tinywebpconv -in photo.jpg -out dist/photo.webp -quality 75

Lossless conversion:

./tinywebpconv -in logo.png -out logo.webp -lossless

Start the small GUI:

./tinywebpconv -gui

Then open:

http://127.0.0.1:8080

Custom GUI address:

./tinywebpconv -gui -addr 127.0.0.1:9090

• If -out is omitted, the tool writes next to the input file using the same base name and a .webp extension.
• GUI mode keeps everything local on your machine. Upload, conversion, and download are handled by the local Go app.
• This project uses github.com/chai2010/webp for WebP encoding.