When filling out online forms for government exams, bank accounts, or job applications, your signature image often needs to meet strict file size requirements — typically between 10KB and 50KB. Getting this wrong means your application will be rejected. This tool resizes your signature to any target KB instantly without uploading anything to a server.
FREE TOOL
Resize Signature for SSC Exams
10-20KB
Resize your signature for SSC CGL, CHSL, and MTS applications to the required 10-20KB size instantly.
Upload Your Signature Image
JPG, PNG, WEBP • Scanned or photographed signature accepted
KB
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Original Size
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Final Size
No Upload — 100% Private
Instant Processing
Mobile Friendly
Always Free
How to Use
How to Resize a Signature Image Online in 3 Steps
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1Select the target KB size. Use a preset (10KB, 20KB, 50KB, 100KB) or type a custom value. For SSC exams use 20KB, for UPSC use 20KB, for most bank forms use 50KB.
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2Upload your signature image. Click the upload area or drag-and-drop a scanned or photographed signature in JPG, PNG or WEBP format. The file is processed entirely inside your browser.
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3Download the resized signature. The tool compresses the image to your target KB with maximum quality retained. Click "Download Signature" and the file is saved instantly.
Signature images are usually long-horizontal (landscape) photographs or scans of your handwritten signature on white paper. The most common problem applicants face is that the scanned signature is too large (several MB) and needs to be brought down to 10–20KB for SSC or 20KB for UPSC. This tool uses a smart compression algorithm that reduces file size without making the signature blurry or unreadable.
For best results, sign on white paper using a black or dark blue pen, then photograph it in good lighting or scan it at 200 DPI. Crop the image so only the signature area is visible (removing excess white space reduces file size significantly). Then upload it here and select your target KB.
The tool is completely private — no image is ever sent to any server. Everything runs in your browser using JavaScript Canvas API, so you can safely use it with your personal signature. It works on desktop and mobile equally well.
Common requirements: SSC exams — signature between 4KB–20KB, JPEG format, dimensions 4.0×2.0cm. UPSC OTR — signature max 20KB, JPEG, 350×150 pixels. IBPS / SBI bank exams — signature 10–50KB. Railway RRB exams — signature 20KB max. Bank account openings — varies but typically 50KB max JPEG.
FAQ
Frequently Asked Questions
What size should a signature be for SSC exams?
For SSC exams (CGL, CHSL, MTS), the signature must be in JPEG/JPG
format, between 4KB and 20KB, with dimensions of approximately
4.0cm × 2.0cm. Select the "20 KB" preset on this tool to safely compress within that limit.
What is the signature size requirement for UPSC?
UPSC OTR (One Time Registration) requires a signature image in JPEG format with a
maximum file size of 20KB and dimensions of 350 × 150 pixels.
Use the 20KB preset to compress your signature accordingly.
Is my signature image uploaded to any server?
No. Everything is processed inside your browser using
JavaScript. Your signature is never uploaded, stored, or transmitted. This is especially
important for sensitive personal documents like signatures.
How do I photograph my signature correctly?
Sign on plain white A4 paper using a dark pen. Place the paper
on a flat surface with good lighting (avoid shadows). Photograph only the signature area. Crop
the image to remove excess space. This will produce a clean, small file that's easy to compress.
What signature size is needed for IBPS/SBI bank
exams?
IBPS PO, SBI PO, and other banking exams typically require a signature in JPG
format with a size between 10KB and 50KB. Some portals accept up to 100KB. Use
the 20KB or 50KB preset based on your specific form requirement.
Can I resize a PNG signature to JPEG?
Yes. Upload your PNG signature and this tool will compress and convert it to
high-quality JPEG format, which is the standard required by virtually all government and bank
portals.
What is the signature size for Railway (RRB) exams?
Railway Recruitment Board (RRB NTPC, Group D, ALP) typically requires a signature
in JPG format with a maximum file size of 20KB. Use the 20KB
preset on this tool to meet this requirement.
Why does my signature image get rejected after
upload?
Rejection usually happens because: (1) File size is too large —
use this tool to reduce it. (2) Format is wrong (must be JPEG).
(3) The signature is on a coloured or non-white background.
(4) The dimensions don't match the requirement. Try compressing to 15KB and
ensure the background is white.
Can I use this tool on a smartphone?
Yes. This tool works perfectly on Android and iOS browsers (Chrome, Safari). You
can take a photo of your signature directly from your phone camera, upload it here, and download
the compressed result — all without installing any app.
What dimensions should my signature image be?
Dimensions vary by exam: UPSC requires 350×150 pixels, SSC
recommends approximately 140×60 pixels or equivalent, and most bank exams
accept any rectangular signature that fits under 50KB. If the portal asks for specific
dimensions, use the custom KB field to size accordingly.