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Convert PNG

Convert your PNG images to any image format online for free - 100% local. 100% local conversion · your files are never uploaded to the server

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PNG.png
JPG.jpg
JPEG.jpeg
BMP.bmp
WebP.webp
TIFF.tiff
TIF.tif
ICO.ico
JFIF.jfif
PJPEG.pjpeg
PJP.pjp
📋 PNG - Sin pérdida de calidad, soporta transparencia, ideal para logos y gráficos
PNG (Portable Network Graphics) is a lossless format that supports transparency. Perfect for logos, icons, and graphics with sharp edges.

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PNG format guide

Converting from PNG: transparency, file size and where to go next

What a PNG actually stores, why it is so heavy for photographs, and what happens to the alpha channel when you convert it

PNG was created in 1996 as an open answer to GIF, in the middle of the dispute over the LZW algorithm patent. The result was a better format in almost every respect: lossless compression, 24-bit true colour instead of 256 colours, and a full alpha channel. Today it is the de facto standard for logos, icons, screenshots and any image that needs a transparent background.
The practical consequence is that a PNG has lost nothing: the pixels it holds are exactly the ones that were saved. That makes converting it a different decision from converting a JPG — here you really are starting from the original, and what you choose determines what is kept and what is thrown away.

How PNG compresses without losing anything

PNG uses DEFLATE, the same algorithm as ZIP (LZ77 plus Huffman coding). On its own that would not do much for images, so before compressing it applies a per-scanline predictive filter: for each row of pixels it picks one of five methods — None, Sub, Up, Average or Paeth — that predicts each pixel from its neighbours and stores only the difference.
That detail explains PNG's behaviour in practice. Across a flat colour area the difference between neighbouring pixels is zero, and a long run of zeros compresses extraordinarily well. In a photograph, by contrast, nearly every pixel differs from the previous one because of sensor noise and texture, so there is very little to predict. PNG is brilliant with graphics and very inefficient with photos, and that is the technical reason why.

PNG-8, PNG-24, PNG-32: what they actually mean

VariantColour typeTransparencyTypical use
PNG-8Indexed palette, up to 256 coloursYes, alpha per palette entryIcons and flat graphics where size matters
PNG-24True colour, 8 bits per RGB channelNoIllustration and screenshots with no transparent background
PNG-32True colour plus an 8-bit alpha channelYes, 256 levels of opacityLogos and cut-outs placed over varying backgrounds
16-bit PNGUp to 16 bits per channelOptionalIntermediate editing work, height maps
These are not different file types: they are all PNG, with a different colour type and bit depth declared in the header. The distinction matters when converting because if your PNG is 16 bits per channel, almost no common destination format will preserve that and it will be reduced to 8 bits.

Which format should you convert your PNG to?

DestinationKeeps alphaEffect on sizeBest when
WebPYes, full alphaConsiderably smaller than PNG, in both lossless and lossy modeIt is the default choice for the web when transparency must survive
JPGNo — filled with a solid colourMuch smaller if the image is photographicThe image is a photo with no transparency and you need universal compatibility
TIFFYesGenerally larger than PNGYou are delivering to print or into a professional editing workflow
ICOYesSmall, designed for iconsYou want to generate a favicon from your logo
BMPNot in practiceEnormous: every pixel stored uncompressedLegacy software explicitly requires it

Semi-transparent edges, and why they end up looking dirty

PNG's alpha channel stores 256 levels of opacity, not just "yes or no". That is what lets the edge of a rounded logo blend smoothly into any background. When you convert to a format with binary transparency such as GIF, those in-between pixels have to commit: either fully opaque or gone. The result is the classic jagged edge with a halo in whatever colour the image was originally composited against.
It is the same reason a logo cut out against white shows a pale outline when placed on a dark background: the edge pixels have had that white mixed into them from the start.

What PNG cannot do

  • No CMYK support. PNG is an RGB format built for screens. Professional print workflows normally expect TIFF or PDF, not PNG.
  • No animation. Standard PNG holds a single frame; APNG is a later extension with uneven support outside browsers.
  • No layers. Exporting from an editor flattens everything into a single image.
  • Not efficient for photographs. For a photo, virtually any modern lossy format will produce a far smaller file at equivalent visual quality.

Converting your PNGs step by step

Check whether your image has transparency

If it is going to JPG or BMP, decide up front what should happen to the background: those formats will fill it with a solid colour and there is no way back.

Pick the output format

For the web with transparency, WebP. For photographs with no transparency, JPG. For desktop icons or a favicon, ICO.

Add your PNG files

Drag them onto the drop zone or click to select them. You can process several at once.

Convert and download

All processing happens in your browser. Check the result against an unusual background colour to confirm transparency came out the way you expected.

Almost always because it is a photograph. PNG's predictive filtering works beautifully on flat areas and clean edges, but in a photo every pixel differs from its neighbour through noise and texture, so there is barely anything to compress. If the content is photographic, WebP or JPG will give a far smaller file.

It is lost. JPEG has no alpha channel, so transparent areas are filled with a solid colour, usually white. Keep the original PNG: the cut-out cannot be recovered from the resulting JPG.

Only if you pick lossy mode. WebP also has a lossless mode that keeps the exact pixels just like PNG and still usually produces a considerably smaller file. For logos and graphics, that is the recommended conversion.

PNG-8 uses a palette of at most 256 colours; PNG-24 stores true colour at 8 bits per channel. For an icon with few colours, PNG-8 is much lighter with no visible difference; for a gradient or a photo, PNG-8 will produce obvious banding.

It is not the right choice. PNG only handles RGB and supports neither CMYK nor print marks, so a print shop will usually ask for TIFF or PDF. For a home printout it works fine.

APNG is an extension added after the standard. Modern browsers play it, but many desktop programs and editors only read the first frame. If you need animation with broad support, GIF or a short video are safer bets.

No. PNG preserves exactly what you hand it, including whatever defects the image already had. It is a good format for stopping further loss from here on, not for recovering loss that already happened.

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