Why portals check file size in KB at all
Why photo size limit in KB exists on government forms — storage, bandwidth, and legacy systems.
Why it exists
Portals and passport authorities align to international standards so automated checks can reject non-compliant files before manual review.
What it means for you, practically
You need the exact pixel size, KB range, background colour, and face proportion — not approximate social-media crops. See Indian passport photo size — 35×45 mm (2026 rules).
Where it applies
| Document | Typical size | Notes |
|---|---|---|
| Indian passport | 35×45 mm | White background |
| OCI | See notification | Light background |
| Exam forms | ~200×230 px | JPG, KB range |
Related
This applies across documents and exams — pick yours and we will set the exact size automatically.
Choose your document or examDocument photo rules look similar across portals but differ in pixels, KB, and background. Always read the current notification instead of copying last year's file. When a form rejects an upload, note the exact error text — "invalid dimensions" and "file too large" need different fixes. PhotoFix presets encode the published spec so you do not have to memorize each exam.
Before final submit, compare your export against the checklist: correct JPG, dimensions within range, KB inside the window, plain background, and face proportion where applicable. Keeping the original photo lets you re-export if a portal updates limits mid-cycle.
See also
- How to resize a photo to an exact KB size
Reduce a photo to 20 KB or any exact limit: crop first, resize to pixel dimensions, then compress iteratively.
- Your photo is too small in KB — the minimum nobody reads
Over-compressed photos below the portal minimum KB fail just like oversized files. Here is why and how to fix it.
Related guides
More PhotoFix articles on the same problem or document type.
- ExplainerHow Much Quality Do You Lose After Multiple Resizes?Image quality loss after multiple resizes stacks blur and JPEG artifacts — crop once, resize once, compress last from one master.
- ExplainerBackground Removal Accuracy: What the Edge Pixels RevealBackground removal accuracy comparison across passport tools: edge-pixel sampling, halo scores, hair-mask failure rates, and what validators actually read.
- TroubleshootingWhy your white background isn't white (and what to do)Background not white enough for passport or OCI? Shadows, grey walls, and halo edges from cheap removal — and how to fix each.