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Local processing has no fixed file-size limit and depends on browser memory. Server limits: video 100 MB, other files 10 MB · Up to 5 files per batch
No registration · Free to useWhen to use this tool
Compress screenshots and graphics while keeping PNG format, dimensions and transparency. Choose stronger compression for smaller files or High quality to keep all colors.
Example: when to use this tool
A PNG screenshot is too large for an attachment. Compress a copy and compare input and output sizes. If the result is not smaller, the original is kept.
Quality and output
Keeps format and dimensions. Stronger compression may reduce quality; PNG uses fewer colors, while High quality keeps all colors. Savings depend on the image.
How to use
- Upload a valid PNG file.
- Choose a compression setting and start processing.
- Download the result and check it before replacing your original.
Before you download
Download and compare byte sizes before replacing the original. Already optimized files can stay the same size or grow; compression is not a guaranteed reduction percentage.