Quick Summary
Most Government OTR portals ask for the same core set of documents, even though the exact upload size and format rules differ slightly by commission. Keep these ready before you start any registration.
Core Documents Needed for OTR
| Document | Why It's Needed |
|---|---|
| Passport-size photograph | Uploaded to your candidate profile; used on admit cards |
| Signature scan | Verifies your application at every future recruitment stage |
| Aadhaar card | Primary identity proof on most modern OTR portals |
| Educational certificates | Marksheets/certificates for qualifications you'll claim in applications |
| Category/caste certificate | Required only if you intend to claim reservation benefits |
| PwBD certificate | Required only for candidates claiming disability-related benefits |
| Domicile/local residence certificate | Needed on state portals with local-candidate quotas |
Common Format Requirements
Photograph and signature uploads are almost always JPG/JPEG files under a small size limit (commonly 20–50 KB), with fixed pixel dimensions specified on each portal. Certificates, where required at registration stage, are typically PDF scans under a set size limit. Always check the exact specification on the portal you're registering with — file-size and dimension errors are one of the most common reasons OTR submissions fail.
Prepare a folder in advance with correctly-sized photo, signature and certificate scans before you start any OTR form. This alone avoids most of the mid-form errors candidates run into near a deadline.
Frequently Asked Questions
OTR registration itself only needs scanned/digital copies. Original documents are usually required later, at the document verification stage after you clear an exam.
You can usually complete OTR as a general-category candidate and update your category later if a correction window is available, though rules vary by portal — check the specific commission's policy.
Most portals now use Aadhaar as the primary identity document, though a few still accept alternate ID proof. Check the specific portal's registration form for accepted documents.
Conclusion
The document list above covers what nearly every OTR portal asks for. For portal-specific format limits, always check the guide for that exact commission before you start filling the form.