PNGGauntlet

Spec sheet

Purpose

PNGGauntlet is PNG compression software described as helping make faster sites.Read 12 Oct 2026 · pnggauntlet.com

Free plan

YesRead 20 Sep 2026 · pnggauntlet.com

Support

The site lists the maker’s email as [email protected].Read 11 Oct 2026 · pnggauntlet.com

License

The site says the license permits unlimited distribution provided nobody charges for it, modifies it, or packages it with other software without the maker's permission.Read 12 Oct 2026 · pnggauntlet.com

Batch processing

It supports parallel batch compression of multiple files at once.Read 12 Oct 2026 · pnggauntlet.com

Compression

It combines PNGOUT, OptiPNG, and DeflOpt to create smaller PNG files.Read 11 Oct 2026 · pnggauntlet.com

Compression modes

losslessRead 20 Sep 2026 · pnggauntlet.com

Compression speed

The help page says PNGOUT and OptiPNG can take time, and turning off OptiPNG can make compression faster while producing slightly larger files.Read 12 Oct 2026 · pnggauntlet.com

Compression tools

It combines PNGOUT, OptiPNG, and DeflOpt to create smaller PNG files.Read 12 Oct 2026 · pnggauntlet.com

Conversion behavior

By default, it may leave a non-PNG file in its original format when converting it to PNG would make it larger.Read 12 Oct 2026 · pnggauntlet.com

File conversion

It converts JPG, GIF, TIFF, and BMP files to PNG.Read 12 Oct 2026 · pnggauntlet.com

Input formats

It can convert JPG, GIF, TIFF, and BMP files to PNG.Read 11 Oct 2026 · pnggauntlet.com

Intended use

The site describes PNGGauntlet as a tool for making smaller PNGs for faster sites.Read 11 Oct 2026 · pnggauntlet.com

Lossless

The site says compression reduces file size without losing image quality.Read 11 Oct 2026 · pnggauntlet.com

Lossless compression

The site says compression reduces file size without losing image quality.Read 12 Oct 2026 · pnggauntlet.com

Maintenance

The maker says PNGGauntlet is no longer being updated, though it still works.Read 12 Oct 2026 · pnggauntlet.com

Metadata controls

YesRead 20 Sep 2026 · pnggauntlet.com

Support contact

The site provides [email protected] as a contact email and links to an FAQ help page.Read 12 Oct 2026 · pnggauntlet.com

Supported formats

PNG,JPG,GIF,TIFF,BMPRead 20 Sep 2026 · pnggauntlet.com

System requirement

PNGGauntlet requires .NET Framework 4.0 and is developed in C# using the .NET Framework.Read 11 Oct 2026 · pnggauntlet.com

Transparency limitation

The help page says paletted alpha images may not work in Photoshop, Gimp, or Paint Shop Pro, and recommends RGB+Alpha mode for editing in those programs.Read 12 Oct 2026 · pnggauntlet.com

Windows requirement

The download is for Windows and requires .NET Framework 4.0.Read 12 Oct 2026 · pnggauntlet.com

Where Specifiction places it

• Image Compression Software#83 of 856.9