Make a JPG big enough for the form

Type the minimum (and a maximum, if there is one). The file is re-encoded at a higher quality first and then at more pixels, measuring the saved bytes after every step — never padded.

Corrected on your own machine — we never get a copy.
No photograph openCorrected on your own machine — we never get a copy.
One press

Drop a dull photo here and we'll take a first pass at it.

Drop a dull photo here and we'll take a first pass at it.
A photo or scan that a form says is too small. JPG, PNG, WebP, AVIF, BMP and HEIC open here; the result is JPEG.
Nothing has been measured yet, so there is nothing for the save control to write.

Quality first, then pixels

Raising the JPEG quality keeps more of each 8×8 block's detail and makes the file larger without changing what the picture is. It is the first lever. Only when quality 97 is not enough are the pixels increased, 10 per cent at a time, up to four times the frame — enlarging adds bytes, but it also adds nothing a reader of the photo would notice, so it comes second.

Why this never pads

A form's minimum exists to reject thumbnails and over-compressed copies. Padding a file defeats that check without fixing the picture, and some portals strip comment and metadata segments anyway, which would take the file back under the minimum after upload. Measuring the real file and growing it honestly avoids both problems.

Reading the result

What the checklist reports
RowExampleMeaning
File size52,317 bytes = 51.1 KBmeasured on the saved file
Pixels1,320 × 990the size it was saved at
FormatJPEGalways
Verdictpasses / too small by 3.4 KBin words, not only a tick

The example row shows the format of the reading; your own file's numbers appear after you press Fit and save.

Limits

  • A very plain picture at a small fixed size may not reach a minimum at any quality; the page reports the closest result instead of faking it.
  • Bigger is not better quality; it is only bigger.

Questions people ask

Why is my photo too small for the form?
Because it holds little information at its current size and quality: a heavily compressed copy, a small picture, or a very plain one such as a signature on white paper. A JPEG's size is a measure of how much detail it encodes, so the only honest ways to make it bigger are to keep more detail (higher quality) or to have more pixels.
Do you add junk data to reach the size?
No. Some tools pad a file with comment segments, fake metadata or invisible noise to inflate it. This page does not: every byte in the saved file is the picture, encoded at the quality and size shown. If the minimum cannot be reached within the limits you set, it says so and shows the closest result.
Is 1 KB 1,000 or 1,024 bytes?
It depends on the portal, and most do not say. The panel shows the exact byte count and lets you choose. For a minimum, counting 1 KB as 1,000 bytes is the safer side: a file that clears 50 × 1,024 bytes also clears 50 × 1,000.
Will this make my photo better quality?
Saving at a higher quality stops further loss; it does not undo compression that already happened. If the picture is dark or yellow, fix it first — the corrections on this page run before the file is fitted.
Can I set a maximum too?
Yes. With both, the solve stays inside the band, stepping quality and pixels whichever way the measured bytes need.

Related

Photographic visual for Increase Image Size In Kb
Increase Image Size In Kb