Increase Image Size in KB
Increase the file size of a photo to an exact KB or MB. Same picture, bigger file, free and online.
or browse filesdrop an image here or paste
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Increase the file size of a photo to an exact KB or MB. Same picture, bigger file, free and online.
or browse filesdrop an image here or paste
Some upload forms refuse a photo for being too small: an exam or job portal that wants a photograph between 20 KB and 50 KB, a signature of at least 10 KB, a document scan no smaller than 100 KB. This tool increases the image size in KB to the number you need. Select an image, type the size under "Make the file this big" or tap a preset such as 50 KB, 100 KB or 1 MB, switch between KB and MB if you need to, and download. The card at the top of the panel shows the file size now and the file size after, so you know the result before you save it.
Most ways to make a photo a bigger file change the photo: they stretch it to more pixels or save it again at a different quality. This one leaves the picture alone. When you upload a JPG and download a JPG, the image data in the new file is byte for byte the original, and the extra kilobytes are added beside it in a part of the file that viewers skip. The photo opens the same everywhere, with the same width, height and sharpness. If what you want is more pixels rather than more kilobytes, Resize image changes the dimensions. If the file is over the limit instead of under it, Compress image brings it down to a target size.
Download as JPG or PNG. The tool keeps the format you uploaded by default, because that is the path that never re-encodes the picture. Pick the other format and the image is converted once at high quality, then brought up to the target. Targets run from 1 KB to 50 MB, so going from a few hundred KB to 2 MB or 5 MB works the same way as going from 18 KB to 20 KB. The result is exact: ask for 100 KB and the file is 102,400 bytes. The details button on the image shows the pixel size, the original file size and the result in bytes.
The photos people run through a tool like this are ID pictures, signatures and scanned certificates, the kind of files that should not pass through someone else's server. Nothing is uploaded here. The file is read, enlarged and saved inside your browser, and it works offline once the page has loaded.
Select the photo, type the size you need in the box under "Make the file this big", for example 50, leave the unit on KB, and press Download. The saved file is exactly that size and the picture looks the same as before.
No. The picture stays exactly as it was, with the same pixels and the same quality. Only the file gets bigger. A larger file made this way is for meeting a minimum upload size, not for making a photo sharper.
It stays a valid JPG or PNG with the right structure, so forms that check the size and the file type accept it. A site that re-saves every picture after upload will shrink it again on its own side, but by then the size check has passed.
Yes. Switch the unit to MB and type the size, such as 1 or 2. Any target up to 50 MB works.
Then it needs to be made smaller, not bigger. The tool tells you when that happens and points to Compress image, which brings a photo down to a target size in KB.
No. The file is read and rebuilt in your browser and never leaves your device, which matters for ID photos, signatures and documents.