Requirements used
- 140×60
- 30–70 KB
- 300 DPI
These are starting values, not confirmed against an official notice. Requirements change between exam cycles, so compare them with your notification and edit any number in the Requirements panel before you download.
Everything runs in your browser. Your files are never uploaded, so it also works on a slow connection once the page has loaded.
How to do it
- 1 Choose your signature from the gallery or camera.
- 2 Drag to position it and use the zoom slider until the frame looks right.
- 3 Check the green badge shows the size is inside 30KB to 70KB, then download the JPG.
FAQ
What size is the RRB NTPC signature?
This preset starts at 140x60px, 30KB to 70KB, 300 DPI. Check your notification and edit the Requirements panel if your form says otherwise.
Is my file uploaded anywhere?
No. Cropping, resizing and compression run inside your browser on your own device. The file never leaves it.
How does it reach an exact KB range?
It searches JPEG quality to land just under the maximum. If the image is too small to reach the minimum, it adds harmless padding data without changing any pixel.
How is the DPI requirement met?
300 DPI is written into the JPEG header (JFIF density), which is what most upload portals read.