OSSC CGL Required Documents 2025: Photo, Signature & File Size Guide
By Dibash Barai • Updated 2025 • 9 min read
Preparing the correct documents is a crucial step while applying for the OSSC CGL examination. Many candidates face rejection due to incorrect photo size, signature format, or unsupported file types.
This article explains the complete OSSC CGL required documents list along with their image size, file format, and upload rules. You’ll also learn how to resize and compress documents easily using imazereduce.com.
OSSC CGL Required Documents List
- Passport-size photograph
- Signature image
- Educational certificates
- Identity proof (Aadhaar, PAN, etc.)
- Category or reservation certificate (if applicable)
OSSC CGL Photo Size, Format & File Type
The OSSC CGL application requires a recent passport-size color photograph.
- Format: JPG / JPEG
- File size: 20 KB to 100 KB
- Background: Plain white or light color
If your image is too large or in PNG format, use the Image Size Reducer or Image Cropper on imazereduce.com.
OSSC CGL Signature Upload Guidelines
- Format: JPG / JPEG
- Recommended size: 10 KB – 50 KB
- Sign on white paper using black or blue ink
Educational & Other Certificates
Candidates may be asked to upload scanned copies of educational, caste, or disability certificates.
- Ensure clarity and readability
- Compress large scanned files
- Use JPG or PDF format if allowed
Common OSSC CGL Document Upload Mistakes
- Uploading images larger than allowed size
- Using PNG, WEBP, or unsupported formats
- Blurry or cropped documents
Avoid these issues by resizing and compressing files before uploading.