Size targets
Resize a photo to an exact KB target
Pick the number your form asks for. Every target below has its own page, uses the same engine, lands on the exact byte in either direction, and never uploads your photo. If your number is not listed, type it into the main tool and it works the same way.
Updated , written and tested by Rizwan Aslam
Every size target, and the largest photo each one can carry
The third column is the useful one. It is the biggest photo that still looks very good at that file size, measured rather than guessed.
| Target | Exact bytes | Largest photo at very good quality | Usually asked for |
|---|---|---|---|
| 10 KB | 10,240 | 280 x 370 | Thumbnail fields and very small signature boxes |
| 20 KB | 20,480 | 390 x 520 | Signature uploads on most application portals |
| 30 KB | 30,720 | 480 x 640 | Signature fields and small photo boxes |
| 40 KB | 40,960 | 550 x 740 | Mid range photo fields |
| 50 KB | 51,200 | 620 x 830 | The most common photo limit anywhere |
| 60 KB | 61,440 | 680 x 910 | Photo fields with a little more room |
| 75 KB | 76,800 | 760 x 1010 | Document scans and larger photo fields |
| 80 KB | 81,920 | 780 x 1050 | Photo fields on some state portals |
| 100 KB | 102,400 | 880 x 1170 | Photograph fields on many forms |
| 150 KB | 153,600 | 1070 x 1430 | Scanned certificates |
| 200 KB | 204,800 | 1240 x 1650 | Higher quality photo fields and scans |
| 300 KB | 307,200 | 1520 x 2020 | Multi page document uploads |
| 500 KB | 512,000 | 1960 x 2610 | Certificates and marksheets |
| 1 MB | 1,048,576 | 2800 x 3740 | Portals asking for a high resolution copy |
| 2 MB | 2,097,152 | 3970 x 5290 | Document bundles and photo ID scans |
The exact bytes column assumes 1 KB is 1024 bytes. Some systems use 1000 instead, so a 50 KB ceiling can mean 51,200 or 50,000. Where a limit is a maximum, aim at the smaller reading and you pass either way.
The largest photo column is the point where each target still delivers roughly 0.8 bits per pixel, which is where most people stop noticing compression damage. Go above it and quality drops whatever tool you use.
How to pick the right number
Three places, in this order. Stop at the first one that gives you a number.
- The official notification or brochure for your exam or application, usually a PDF.
- The upload page itself. Many portals print the accepted size and dimensions just above the file selector.
- The help desk listed on that portal, if the first two say nothing.
Coaching sites, news articles and tool blogs are not official sources, however confident they sound. Here is why this site refuses to publish exam size tables of its own.
What a target costs you, before you pick one
A smaller number is not automatically safer. Below a certain size, detail has to go, and no tool escapes that.
| Bits per pixel | What you see |
|---|---|
| 1.2 and above | Excellent, no visible difference |
| 0.8 to 1.2 | Very good, safe for any form |
| 0.55 to 0.8 | Acceptable, slightly soft up close |
| 0.35 to 0.55 | Visible artifacts around text and edges |
| Below 0.35 | Heavy artifacts, clearly degraded |
The practical rule: resize the pixel dimensions first, then compress to the KB target. Scaling to what the form actually asks for throws away pixels it never wanted, and the same KB then has far more room per pixel.
Common questions
What file size should I choose for my form?
Whatever your official notification or the upload page says, and nothing else. Sites that publish tidy tables of exam sizes disagree with each other, so a number copied from a blog can get an application rejected. If a range is given, aim for the middle of it.
Is 1 KB 1000 bytes or 1024 bytes?
Both readings are in use and forms almost never say which. When a limit is a maximum, aim at the smaller reading. Land at 50,000 bytes rather than 51,200 and you pass under either rule.
Why do these pages not list sizes for each exam?
Because the published numbers conflict. Three confident sources quote three different photo ranges for the same well known exam, so at least two are wrong. This site teaches you to read your own requirement instead.
Can I hit a size that is not on this list?
Yes. Every page here uses the same engine, and the engine accepts any number you type in KB or MB. The listed targets are simply the ones people ask for most.