SnapCompress
Signature Resizer
Resize a signature to 20KB or 50KB, or use a signature resize 10KB-20KB. Set the signature size in pixels when the form prints one. Pixel buttons: 140 × 60 (IBPS preferred), 230 × 75 (TNPSC printed), 354 × 157 (NSDL calculated). RRB’s 140 × 60 is a minimum, not a fixed canvas. SSC states no pixels. The UTIITSL signature note states no pixels. Sizes that those notices do not state are not buttons on this page. TNPSC Signature: 230 × 75 px; 10–20 KB; Signature.jpg. JPEG, blue or black ink inside a 6.0 × 2.0 cm box. The notice also says 200 DPI. Those centimetre and DPI figures do not equal 230 × 75 px; the tool uses the printed pixel size and writes a 200 DPI tag. RRB NTPC Signature: At least 140 × 60 px; 30–49 KB; signature.jpg (editable). JPG/JPEG, black ink on white paper, scan at least 100 DPI. The 35 × 20 mm box is where the signature sits on the form. The tool may enlarge past 140 × 60, keeping that shape, because the file also has to reach 30 KB. PAN card NSDL signature: 354 × 157 px, calculated; Max 10 KB; signature.jpg (editable). Protean states 2 × 4.5 cm, 200 DPI, colour JPEG, max 10 KB, without saying which side is the width. 354 × 157 treats 4.5 cm as the width. The tool can swap the sides. PAN card UTIITSL signature: Pixels not stated; Under 60 KB; signature.jpg (editable). Same APT Online note: black and white, 600 DPI, JPEG, less than 60 KB. No pixel size is stated. 400 × 200 is an optional extra in the tool and is not an official figure. SSC CGL 6.0 × 2.0 cm: Pixels not stated (about 6.0 × 2.0 cm); 10–20 KB; signature.jpg (editable). Paragraph 9.6 of the CGL 2026 notice. The tool keeps a 3:1 frame and searches for a JPEG inside 10–20 KB. The pixel size it finds is not an official number. DPI is not stated, so no DPI tag is written. SSC CGL 4.0 × 2.0 cm: Pixels not stated (about 4.0 × 2.0 cm); 10–20 KB; signature.jpg (editable). Annexure-IV of the same CGL 2026 notice prints 4.0 cm × 2.0 cm instead of 6.0 cm. Same 10–20 KB JPEG rule. No official pixel size. IBPS Signature: 140 × 60 px (preferred); 10–20 KB; signature.jpg (editable). Preferred size in those same guidelines. Black ink on white paper, not in capital letters, JPEG, 10–20 KB. The tool does not enlarge past 140 × 60. 10 KB, 20 KB, and 50 KB mean at or below 10,240, 20,480, and 51,200 bytes. The 10–20 KB window is 10,240 to 20,000 bytes. Output is a JPG. No DPI tag is written. Processing stays in the browser. This page does not promise that a portal will accept the file.
Questions
How do I resize a signature to 20KB?
Select 20 KB, then create the JPG. That ceiling is 20 × 1,024 = 20,480 bytes, the same budget the image compressor uses, and the file must be at or below it. If you also select a pixel size, that canvas stays fixed and only JPEG quality changes. If the smallest JPEG is still over 20,480 bytes, the result says so. With no pixel size selected, the scan’s shape is kept and the longest side is reduced only when quality alone cannot fit.
How do I resize a signature to 50KB?
Select 50 KB. The ceiling is 50 × 1,024 = 51,200 bytes. A chosen canvas is not shrunk or enlarged to force the file under that ceiling. With no pixel size selected, the scan’s shape is kept and pixels change only when quality alone cannot fit.
What signature size in pixels should I use?
Only the size your own form prints. The buttons are exact figures checked on 3 November 2026: 140 × 60 (IBPS preferred), 230 × 75 (TNPSC printed), 354 × 157 (NSDL calculated). RRB’s 140 × 60 is a minimum, not a fixed canvas. SSC prints centimetres and no pixels. The UTIITSL signature note states no pixels. This page does not add sizes those sources do not state.
How does a signature resize of 10KB–20KB work?
The 10–20 KB button uses the exam window: at least 10 × 1,024 = 10,240 bytes and at most 20 × 1,000 = 20,000 bytes. A file inside both bounds is inside 10–20 KB whether a portal counts 1,000 or 1,024 bytes per KB. On a fixed canvas, the image is not enlarged to reach the floor. With no pixel size selected, the scan is not enlarged either. If it stays under 10,240 bytes, the result says so.
What DPI should a signature file use?
DPI does not change the pixel count. A 140 × 60 file is 140 × 60 pixels with or without a density tag. The notices checked here do not share one DPI: TNPSC, IBPS, and Protean say 200 DPI, RRB says at least 100 DPI, the UTIITSL signature note says 600 DPI, and SSC states none. This resizer does not write a DPI tag. The exam page writes one only when that notice states one.
Is the signature uploaded to SnapCompress?
No. The resize and the JPEG quality search run in your browser. The image is not uploaded.
Will a portal accept this file?
No. Portals change notices, and they also reject unclear faces, the wrong ink, or a signature that does not match later samples. Check the notification you are applying under. This page does not promise that an upload will be accepted.
Open SnapCompress · Exam photo and signature size chart · Image compressor · 20 KB compressor · 50 KB compressor · TNPSC Signature Resizer — 230×75 px, 10–20 KB · TNPSC Photo Resizer — 130×170 px, 20–50 KB · RRB Signature Resizer — 30–49 KB · PAN Card Photo & Signature Resizer (NSDL / UTIITSL) · SSC Signature Resizer — 10–20 KB · IBPS Photo & Signature Size Tool