What is the Railway/RRB Signature size?
For RRB NTPC, Group D, ALP and RPF exams, the online application form accepts a signature as a JPG file of 140 x 60 pixels that falls inside the 10-20 KB range. The pixel size matters just as much as the file size – upload a photo that is too big or too small and the portal will reject it before you can continue.
This resizer builds your file to exactly 140 x 60 pixels and automatically lowers the JPEG quality until it lands under the 20 KB upper limit, so the file is accepted the first time.
How to resize your Railway/RRB signature
- Drop your image into the box above, or click to browse. JPG, PNG, WebP and BMP uploads all work.
- Check the required-size box: 140 x 60 px, 10-20 KB, JPG.
- Adjust the quality slider if you like – the tool shows a live estimate as you move it.
- Click Resize & Download. The JPEG quality drops automatically if needed to stay inside the size limit.
- Upload the downloaded JPG to the application portal and verify it appears correctly.
Tips for a signature that gets accepted
- Use a clear image on a plain white or light background, cropped close to the face or signature area.
- Make sure there are no watermarks, borders, or heavy shadows around the edges.
- Keep the original image sharp before resizing – shrinking a blurry photo keeps it blurry.
- Double-check the pixel size shown in the results before you upload, and cross-check it against the latest official notification.
Why use this signature resizer?
- Exact output – the image is resized to 140 x 60 pixels, not close to it.
- Auto file-size control – quality is reduced automatically to fit the 10-20 KB limit.
- 100% private – everything runs in your browser and your image is never uploaded to any server.
- Free and unlimited – resize as many times as you like, with no account and no watermark.
Frequently Asked Questions
The accepted signature size is 140 x 60 pixels. Some notifications also mention a size in centimetres - the pixel values here are the ones the upload portal checks.
The portal accepts a JPG between 10-20 KB. This resizer targets that range and lowers the JPEG quality automatically until the file fits.
No. Your image is processed locally in your browser using the Canvas API and never leaves your device, so it is safe to use with personal documents like photographs and signatures.
Yes, it is 100% free with no limits, no account and no watermark. Resize as many images as you like, as often as you like.
You can upload JPG, PNG, WebP, BMP or GIF images. The tool converts whatever you upload to the JPG format the application form requires.
Yes. The width and height boxes are editable, so you can type any size your specific notification asks for and the tool will resize to those exact pixels.
Shrinking the image keeps its sharpness thanks to high-quality smoothing. The tool then picks the highest JPEG quality that still fits the size limit, so the result looks as good as the file-size rule allows.