Compress image to 50 KB

Squeeze a JPG, PNG, WebP or HEIC under 50 KB in your browser.

Make images or PDFs smaller.

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    Where 50 KB comes from

    This is a survivor rather than a decision. Forum avatars, email signature images and the upload forms of software written when a 50 KB image was a considered expense all cap here, and nobody has revisited the number since, because raising an upload limit is work and leaving it alone is not. A form still asking for 50 KB today is almost never doing it for a reason somebody could give you.

    What 50 KB costs you

    At this budget you are no longer choosing quality, you are choosing dimensions. A photograph from a phone is three to five megabytes; 50 KB is under a hundredth of that, which is past the point any encoder can reach by discarding detail alone. Expect the picture to come back physically smaller - often around a thousand pixels on its long edge - and to look right at that size while falling apart if you enlarge it again.

    What each format does at 50 KB

    At 50 KB the format decides whether you keep the picture or keep the pixels, and the four answers genuinely differ. Auto tries them all and keeps the least damaged result, which is the right default. Overrule it only when the far end insists:

    More on what compression actually throws away.

    Questions about 50 KB

    Can a photograph really fit in 50 KB?

    Only by giving up most of its pixels. 50 KB is enough for perhaps 400 by 300 pixels of photograph at a tolerable quality, so a 12 megapixel image has to shed around ninety-five per cent of its area to get there. The tool will do it, and the result is a small picture rather than a soft large one, which is the honest outcome. Flat artwork is a different story: a logo or an icon often fits at full size without being touched.

    The form wants 50 KB and a minimum width. Is that possible?

    Sometimes, and the way through is to remove pixels you do not need rather than quality you do. Crop tightly first: a headshot cropped to the head carries a fraction of the pixels of the same photo with a room behind it, and it will clear a width minimum at a much smaller file size. Check too whether the 50 KB applies to the image or to the whole upload, because the two get confused constantly and the second is far easier to meet. If both requirements are real and neither will bend, the photograph itself is the problem: a plain background compresses enormously better than a busy one.

    What is left of the picture at 50 KB?

    Enough to recognise a face, not enough to read a document or count leaves on a tree. Because the budget is past what quality alone can deliver, the tool spends it on fewer, better pixels rather than more, ruined ones - so what comes back looks correct at its new size and falls apart if you enlarge it. That is the right trade for an avatar or an ID photo and the wrong one for anything that will be printed.

    There is no slider to set. The quality is found by searching the range from the top downwards, and when even the lowest setting overshoots 50 KB the image is redrawn a quarter smaller and the search runs again - which at this budget is what usually happens.

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