What is the signature size limit for UPSC?

Union Public Service Commission (CSE & other exams) typically requires signatures to be under 50 KB in JPG format. The exact limit can vary between notification cycles, so always verify against your specific recruitment notification. 12 lakh+ candidates apply through UPSC each year.

How do I compress my signature to exactly 150 KB?

Upload your signature to the free tool on this page, set the target to 150 KB, and click Compress. The tool automatically adjusts JPEG quality and, if needed, resolution to get the file just under 150 KB. No server upload required — everything processes on your device.

Is this tool safe to use for UPSC?

Yes. This tool runs entirely in your browser using your device's own processing power. Your signature file is never sent to any server — it stays on your device throughout the entire process. No account, no signup, and no payment is required.

What format does UPSC accept for signatures?

UPSC accepts JPG format only. If your signature is in PNG, BMP, or any other format, this tool will automatically convert it to JPG during compression. The required dimensions are Proportional, clear on white paper.

What if my signature is already under 150 KB?

If your file is already under 150 KB, you may not need compression at all. However, you should still verify the format is JPG and the dimensions match UPSC's requirements (Proportional, clear on white paper). You can use this tool to verify your file meets all criteria.

Resize Signature to 150 KB for UPSC

While UPSC officially requires signatures under 50 KB, you may need 150 KB for a specific notification cycle or variant of this exam. This tool compresses your signature to exactly 150 KB, giving you precise control over the output size. No file is uploaded — processing happens entirely on your device.

Quick Answer

To compress your signature to 150 KB for UPSC: Upload your signature using the tool above, confirm the target is set to 150 KB, click "Compress to target size," and download the result. The tool runs entirely in your browser — nothing is uploaded to any server.

Drop a photo or signature here, or choose a file

Image type

Your exam or form

UPSC Signature: max 150 KB

Output settings & Features

Target size

Format

How exact-KB compression works

This adjusts JPG/WEBP quality and, if needed, slightly reduces pixel dimensions until the file lands just under your target. The compression runs on a background thread when your browser supports it. Your file is never sent to a server — everything happens on your device.

UPSC Signature Requirements

File size: Must be under 150 KB (153600 bytes).
Format: JPG only — PNG, BMP, and other formats are rejected.
Dimensions: Proportional, clear on white paper.
Background: Plain white unlined paper.
Recency: Must match the signature on your official ID.

Technical Specifications

Target File Size	150 KB
Required Format	JPG
Physical Dimensions	Proportional, clear on white paper
Recommended DPI	200 DPI - 300 DPI (if specified)
Pixel Equivalent (Approx)	140 x 60 pixels to 200 x 230 pixels
Compression Algorithm	Lossless / High-Quality JPEG Binary Search

Pre-Upload Checklist for UPSC

☐ Signature is in JPG format

☐ File size is under 150 KB

☐ Signature matches official ID documents

☐ Background is plain white with no shadows or patterns

☐ Signed with dark ink (black or dark blue)

☐ Image is not blurry or pixelated after compression

☐ File has been tested on the UPSC portal preview before final submission

How to Compress Signature to 150 KB for UPSC

Click "Choose file" or drag your signature into the upload area above.
Verify the target size is set to 150 KB. If not, adjust it manually.
Click "Compress to target size" to begin processing.
Wait for the green "FITS" stamp to appear, confirming the file is under 150 KB.
Click "Download" to save the compressed signature to your device.
Upload the compressed file to the UPSC application portal.
Use the portal's preview feature to verify the signature displays correctly before submitting.

Common Mistakes When Uploading Signature for UPSC

Mistake #1Signing on lined or ruled paper, which adds noise and increases file size. This is especially common with UPSC applications.

Mistake #2Using a light-colored pen that doesn't create enough contrast for compression. This is especially common with UPSC applications.

Mistake #3Scanning at unnecessarily high DPI (300+ DPI), creating files far above the limit. This is especially common with UPSC applications.

Mistake #4Using a digital/typed signature instead of a handwritten one. This is especially common with UPSC applications.

Mistake #5The scanned signature not matching the one on Aadhaar or PAN card. This is especially common with UPSC applications.

Expert Tips

At this size, you're unlikely to see any visible quality loss compared with the original.
Sign with a black or dark blue ink pen on plain white unlined paper.
Ensure the signature is consistent with your official ID documents.
Crop tightly around the signature, removing excess white space.

Frequently Asked Questions

What is the signature size limit for UPSC?: Union Public Service Commission (CSE & other exams) typically requires signatures to be under 50 KB in JPG format. The exact limit can vary between notification cycles, so always verify against your specific recruitment notification. 12 lakh+ candidates apply through UPSC each year.
How do I compress my signature to exactly 150 KB?: Upload your signature to the free tool on this page, set the target to 150 KB, and click Compress. The tool automatically adjusts JPEG quality and, if needed, resolution to get the file just under 150 KB. No server upload required — everything processes on your device.
Is this tool safe to use for UPSC?: Yes. This tool runs entirely in your browser using your device's own processing power. Your signature file is never sent to any server — it stays on your device throughout the entire process. No account, no signup, and no payment is required.
What format does UPSC accept for signatures?: UPSC accepts JPG format only. If your signature is in PNG, BMP, or any other format, this tool will automatically convert it to JPG during compression. The required dimensions are Proportional, clear on white paper.
What if my signature is already under 150 KB?: If your file is already under 150 KB, you may not need compression at all. However, you should still verify the format is JPG and the dimensions match UPSC's requirements (Proportional, clear on white paper). You can use this tool to verify your file meets all criteria.

Summary

Getting your signature to exactly 150 KB for Union Public Service Commission (CSE & other exams) doesn't need to be stressful. Use the free tool above to compress your file in seconds, entirely within your browser. Remember to always cross-check the size limit against your specific UPSC notification, as requirements can change between recruitment cycles. These size limits have been consistent across recent UPSC recruitment cycles.

✓Editorial Verification

Editorial Note: The 150 KB size requirement and dimensional guidelines for the UPSC Signature were verified against the official 2026 recruitment notification PDF. Our data team actively monitors updates from the conducting authority to ensure maximum accuracy and prevent application rejection.