Pngyu

Spec sheet

Purpose

Pngyu is a PNG image compression tool for batch compressing multiple PNG files.Read 11 Oct 2026 · nukesaq88.github.io

Free plan

YesRead 24 Sep 2026 · nukesaq88.github.io

Integrations

The repository describes Pngyu as a front-end GUI application for pngquant.Read 11 Oct 2026 · github.com

Support

Bug reports, feedback, and feature requests are accepted through GitHub Issues, Twitter, and email.Read 11 Oct 2026 · nukesaq88.github.io

License

The project repository says Pngyu is distributed under the BSD license and that pre-built binaries include pngquant, licensed under GPL v3 or later.Read 11 Oct 2026 · github.com

API access

NoRead 24 Sep 2026 · nukesaq88.github.io

Batch processing

YesRead 24 Sep 2026 · nukesaq88.github.io

Batch workflow

Users can drag and drop multiple PNG files into the app and start compression with the Compress Start button.Read 11 Oct 2026 · nukesaq88.github.io

Compression engine

Pngyu uses pngquant as its compression engine.Read 11 Oct 2026 · nukesaq88.github.io

Compression modes

lossyRead 24 Sep 2026 · nukesaq88.github.io

Compression settings

The Compress Option can be changed to Custom for detailed compression settings.Read 11 Oct 2026 · nukesaq88.github.io

Default output

By default, compressed files overwrite the input files.Read 11 Oct 2026 · nukesaq88.github.io

Downloads

The homepage offers macOS and Windows versions, both listed as version 1.0.5.Read 11 Oct 2026 · nukesaq88.github.io

How compression works

pngquant converts 24-bit or 32-bit full-color PNG files to 8-bit indexed color.Read 11 Oct 2026 · nukesaq88.github.io

Irreversible processing

Compression includes color reduction, so the original image cannot be restored from the compressed image; the maker advises backing up important files first.Read 11 Oct 2026 · nukesaq88.github.io

macOS launch note

The maker says that because the app is independently distributed, macOS may require users to choose Open Anyway in Privacy & Security on first launch.Read 11 Oct 2026 · nukesaq88.github.io

Output settings

The Output Option can be changed to Custom to change the output destination or file name.Read 11 Oct 2026 · nukesaq88.github.io

Preview

Selecting a file and clicking Preview opens a window to check the result using the current settings.Read 11 Oct 2026 · nukesaq88.github.io

Supported formats

PNGRead 24 Sep 2026 · nukesaq88.github.io

Plans and prices

Every Pngyu plan and price →

Where Specifiction places it

• Image Compression Software#63 of 857.6