What this opens on
The File size panel, at your picture’s own pixel size with a 50 KB floor. Set the floor (and a ceiling, if the form has one) and press Save. The solve runs these steps, measuring the real file each time:
| Step | What changes | Why this order |
|---|---|---|
| 1 | JPEG at quality 0.92 | a normal, high-quality save |
| 2 | quality 0.97 if under the floor | keeps more of the picture, adds no pixels |
| 3 | pixels up by 10% at a time | the smallest enlargement that clears the floor |
| — | quality down to 0.70, then pixels down | only if a ceiling is set and the file is over it |
After the save the result shows the exact bytes, read from the file, in bytes and in KB with the unit stated, and lists every step it tried. Measured on this engine: a 640 × 480 test photo with a 300 KB floor stayed under it at quality 0.92 and 0.97, so the solve stepped the pixels up by 10% at a time and stopped at 1,030 × 773 — 312,171 bytes, 304.9 KB. Your picture never leaves this tab.
Where this falls down
- Flat pictures compress very small.A signature on white or a plain logo can stay under 10 KB even at quality 0.97 and several times the size. The page says the floor is unreachable rather than faking it.
- It always saves a JPEG.A minimum-KB rule is almost always a JPEG rule. For PNG or WebP use the main enlarger's Export panel.
- It cannot promise acceptance.The bench checks bytes and pixels. Whatever else a portal checks — the face, the background — is beyond what this page can see.
Questions people ask
- Why not just add empty bytes?
- Because it is a trick, and some portals check for it. Padding a JPEG with comment segments or junk data makes the number bigger without changing the picture. This page raises the JPEG quality first (less is thrown away), then the pixel size by the smallest step, and if the floor still cannot be reached it says so plainly with the closest real result.
- Does a bigger file mean a better photo?
- Only slightly, and only up to a point. A higher JPEG quality keeps more of what the picture already had; a bigger pixel size spreads it over more pixels. Neither adds detail. The file clears the floor because it is stored less lossily, not because it became a better photograph.
- Is 1 KB 1,000 or 1,024 bytes?
- Both are in use, and portals rarely say which they mean. This page counts 1 KB as 1,024 bytes by default, which is the safer reading of a minimum; a toggle switches to 1,000. The saved file's exact byte count is always shown, so you can check it against either.
- How is the size measured?
- From the saved file itself. Every step of the solve encodes a real JPEG in this tab and reads its length; nothing is estimated. The steps are listed after the save.
Better fit?
- Enlarge a photo for an online formSourced form presets: pixel floor, KB band and JPEG in one pass, then checked.
- Increase image size110%, 125%, 150% or any percent you type: the small enlargements the factor chips skip.
- Increase image resolutionType the exact width, height or long edge; the bench shows the factor that results and whether it fits.
- A rough small photoOpens with the clean-up pass on, because a 600-pixel JPEG carries more than a picture.
