This is the commonly used size: we found no requirement published by the institution. Confirm it before your application.
Tips to get it right the first time
Each recruitment body sets its own limits: always check the notice; some portals now capture a live photo.
Photo without cap or dark glasses, on a light background, taken recently.
Signatures usually go in a separate, smaller JPG: sign inside the box so it fills most of it.
How to do it with Requisito Listo
Open the «Exam application photo (SSC and others)» template in the app.
Take the photo with the on-screen guide (or pick one from your gallery).
The app centers your face, makes the background white and gets the exact size and file weight.
Check the checklist, then upload or save it.
At the end you'll see a checklist: size, file weight, background and format. If something doesn't comply, it tells you what to fix before the portal rejects it.