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PNG Converter

Portable Network Graphics. PNG is a lossless raster format with full alpha transparency, standardised by the W3C and ISO.

PNG is Portable Network Graphics, a lossless raster image format with an alpha channel for per-pixel transparency. It uses DEFLATE compression with per-scanline filtering, so nothing is discarded on save and repeated saves never degrade the image. Best for screenshots, logos, line art and anything with flat colour.

22 conversions available

Convert PNG to another format

Every conversion that takes PNG as the input.

Convert another format to PNG

Every conversion that produces PNG as the output.

Other tools that work with PNG

What a PNG file is

PNG stores pixels losslessly. Each scanline is filtered to make it more predictable, then the whole image data is compressed with DEFLATE. Nothing is thrown away, so saving a PNG a hundred times produces the same image a hundred times, unlike a lossy format that re-quantises on every write.

The alpha channel is the other reason PNG persists. Every pixel can carry its own opacity, which is what makes it the right format for logos, icons, UI assets and anything that has to sit on an unknown background. It also supports indexed colour for small palettes and a tRNS chunk for cheap single-colour transparency.

The weakness is photographs. Lossless compression on a photograph produces a file several times larger than a lossy one at a quality nobody can tell apart, which is why converting photographic PNGs to JPG or WebP is usually the right call, and converting a screenshot the other way usually is not.

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