This guide explains the common photo and signature requirements for Kerala PSC, Indian passport/visa applications and university/exam portals. It includes practical pixel examples, recommended KB targets, format advice (JPG, PNG, WebP) and step-by-step instructions to prepare files that pass portal checks.
1. What portals commonly ask for
Most portals check a combination of:
- - pixel dimensions or aspect ratio (for example 35 x 45 mm or 350 x 450 px)
- - maximum file size in KB (common: 50 KB, 100 KB, 200 KB, sometimes up to 500 KB)
- - file format allowed (JPG, PNG; WebP accepted rarely)
- - background requirements (plain white or light background for passport-style photos)
2. Reliable KB targets for different use cases
- Very strict portals - aim for 50 KB (use 50 KB target and downscale carefully).
- Typical government & exam portals - 100 KB is commonly accepted and safe.
- Relaxed portals / email - 200 KB gives higher quality and is widely accepted.
3. Pixel examples and DPI notes
For prints and high-quality uploads, DPI matters for printing but online forms usually validate pixel dimensions:
- 35 x 45 mm at 300 DPI ≈ 413 x 531 px
- 350 x 450 px - commonly used in many Indian portals
- 600 x 800 px - higher quality for passport printing or larger displays
4. Format guidance
- JPEG (JPG): Best compatibility and generally smallest for photographs.
- WebP: Better compression efficiency; small files with good quality. Use when accepted.
- PNG: Use for signatures or images requiring exact transparency, but be aware of size.
5. Step-by-step: prepare a photo for Kerala PSC
- Make a clean crop with the subject centered and plain background.
- Resize to the portal pixel recommendation (350 x 450 px is a safe default).
- Compress to 100 KB using Compressly. If rejected by portal, try 90 KB and ensure pixel dimensions match portal rules.
- For signatures, crop tightly and try 30–60 KB targets for PNG (or convert to JPG if transparency not required).
6. Troubleshooting portal rejects
If your upload is rejected:
- - Confirm file format exactly (some portals only accept JPG or JPEG).
- - Confirm pixel dimensions and aspect ratio.
- - Check file name rules (some portals disallow special characters in filenames).
- - Try a slightly larger KB if the portal mentions compression artifacts (some portals prefer clearer images).
7. Accessibility & privacy note
Compressly processes images inside your browser only. Files are not uploaded to any server. This protects your privacy when preparing sensitive photos like passport and exam images.
8. Quick links
9. FAQ
Q: Which KB should I try first for KPSC?
A: 100 KB is a safe starting point.
Q: My portal needs exact pixel size — what now?
A: Resize to exact pixels first, then compress. Resizing after compressing can change
the file weight unpredictably.
If you want, download the image after compressing and test upload on the portal. If you have a specific portal link, I can give exact pixel and KB targets for it.
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