Check Image Size in KB and Pixels Online Free for Exam Forms

Exam, job and government portals are strict about photos. The form says something like "JPG, 20KB to 50KB, 200 x 230 pixels", and if your file misses any part of that rule, the upload fails. The quickest fix is to check the image size in KB and pixels before you upload, not after the portal says no.

What the form is really asking for

Most photo rules have two separate parts, and people often mix them up.

• File size in KB: how much space the file takes. A 35KB photo is inside a 20KB to 50KB range; a 2MB phone photo is far over it.
• Pixel dimensions: the width and height, such as 200 x 230. This is the shape and detail of the image, not its weight.

A photo can pass one test and fail the other. A tiny 30KB file can still be 1200 x 1600 pixels, and a 200 x 230 photo can still be too heavy if it is saved as PNG.

How to check image size in KB and pixels

1. Open the free Image Size Checker in your phone or computer browser. No account is needed.
2. Upload the photo, signature or thumb impression you plan to submit.
3. Read the results: width and height in pixels, and file size in KB or MB.
4. Tap Copy next to any value if you want to paste it into a note or a message.

Your file is processed in memory and is not stored on our servers. The checker only reads the numbers; it does not change your photo, so there is nothing to download.

Compare the numbers with the form

Write the form's rule next to what the checker shows:

• Is the width and height exactly what the form asks for, or inside its range?
• Is the KB value between the minimum and the maximum?
• Is the file in the format the form wants, usually JPG or JPEG?

If all three match, upload it. If one does not, fix that part and check again.

If the photo does not match

Fix the pixels first, then the KB, because resizing changes the file size but compressing does not change the dimensions.

1. Use Resize Image to set the exact width and height.
2. Use Compress Image to bring the file into the KB range. Our guide on compressing a photo to 20KB, 50KB or 100KB walks through that step.
3. Run the result through the Image Size Checker once more before you upload.

Why a portal still rejects a photo that looks right

• KB counted differently: some sites treat 1KB as 1000 bytes, others as 1024. A file at 50.5KB on one count can be over 50KB on the other. Aim a little under the maximum.
• Wrong format: iPhone photos are often HEIC and screenshots are often PNG. Save as JPG if the form asks for JPG.
• Signature at photo size: the signature usually has its own dimensions, such as a wide strip. Check it separately rather than reusing the photo settings.
• Too small: a minimum like 20KB matters too. Over-compressing a photo can push it under.

Need a clean ID-style photo first?

If your only photo is a casual selfie, the Professional Headshot collection can help. Standard ID Photo makes a plain, passport-style portrait, and Corporate Portrait Pro gives a neat formal look for job profiles. Check the official rules too: some forms need a real, recent photograph, so use AI portraits only where they are allowed.

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