SSC signature, 10–20 KB
Sign on white paper in running handwriting and crop the ink so it fills the frame. The export is a JPEG aimed at 10–20 KB.
SSC CGL and CHSL 2026 capture the photograph live inside the form. This page does not make that photo.
What usually goes wrong
SSC says the usual failure is a miniature signature. The dashed guide is about 80% of the frame. Do not send a photo of the whole page.
What this page checks
JPEG, 480×160 as a working size for about 6 cm × 2 cm, file between 10 KB and 20 KB. The notice often states centimetres and KB, not one pixel size.