Skip to content
freeonlinefileconvert

Increase image size to 50 KB

Some uploads have a 50 KB floor, such as the IBPS handwritten declaration. If your scan comes out at 25 or 35 KB, this brings it to 50 KB without changing what it shows.

Set to: 50 KB

or drop them here · up to 50 MB per file, free

Bigger files? Pro converts files up to 500 MB

This is bigger than the free version

You can still do it: convert it now and pay €1.99 only if you want to download the result.

Free covers files up to 50 MB and up to 20 files at a time.

Sorry, that didn't work

We've noted the problem with Increase Image Size in KB. Leave your email and we'll write to you as soon as it's fixed.

Your file is not sent to us: we only know which tool failed and the type of error.

Free · No sign-up · No watermark · Your files never leave your device

Increase image size to 50 KB in 3 steps

  1. Select the image the form says is too small (JPG, PNG or WebP). 50 KB is already chosen.
  2. Click Increase size. Width, height and picture stay as they are.
  3. Download the JPG, now a little over 50 KB, and upload it.

Uploads with a minimum of 40 or 50 KB

IBPS handwritten declarationJPG, 800 × 400 px, 50 KB to 100 KB
Chinese visa online photoJPEG up to 354 × 472 px, 40 KB to 120 KB
UK passport digital photoAt least 600 × 750 px, 50 KB to 10 MB
This toolPads a JPG to just over 50 KB; pixels unchanged

Sources: IBPS PO/MT-XVI notification (2026) · Chinese Visa Application Service Center: photo FAQ · GOV.UK: photo requirements

Where a 50 KB minimum shows up

The handwritten declaration in bank exams is the classic case. IBPS wants it as an 800 × 400 pixel JPG between 50 and 100 KB. A page of black ink on white paper compresses extremely well, so a clean scan at that size often weighs 30 KB and is refused. Padding it to 50 KB keeps the scan crisp and inside the 100 KB ceiling.

The Chinese visa online photo has a 40 KB floor, so a file raised to 50 KB passes with room to spare. The UK passport service also starts at 50 KB, but there the photo must be unedited and is normally a full phone photo, which is far bigger already; you would rarely need this page for it.

Going from 20 KB to 50 KB

The tool adds bytes to a comment section inside the JPG, which viewers and portals ignore. It does not upscale, sharpen or recompress the picture, so text in a scan stays as sharp as it was and the pixel size the form checks does not move. Starting from 20 KB or from 45 KB, you get a file just over 50 KB.

If the form needs exact pixels as well, for example 800 × 400, resize the image first with Resize Image, then come back here. For photos, Exam & Visa Photo Resizer does pixels and a KB range in one step.

When 50 KB is not the only limit

Check the maximum too. Padding stops just over the minimum, so a 50 to 100 KB window is safe, but if your file already weighs more than 50 KB, it is returned unchanged and you may need Compress Image instead. For higher floors, the At least menu also offers 100, 200, 300 and 500 KB.

Frequently asked questions

How do I increase a JPG from 30 KB to 50 KB?

Select it, keep 50 KB chosen and click Increase size. The new file weighs just over 50 KB and looks identical.

Does it work for scanned documents?

Yes, for scans saved as JPG, PNG or WebP. The result is a JPG. For PDF documents, this tool does not apply.

Can I raise the size of a signature to 50 KB?

Yes, if the form asks for it. Most signature uploads want 10 to 20 KB, though; check the notice first.

Is my image uploaded to your site?

No. It is processed in your browser on your own device.

You are one of the first

FreeOnlineFileConvert has just launched. Create a free account now and join our Family & Friends list: the full Pro plan, free for life.

Pro0 €6,99 €
Join for free