PAN Card Photo and Signature Dimension Guide (NSDL / UTIITSL)
Step-by-step instructions to format candidate photo (200 DPI, 3.5x2.5cm, <50KB) and signature (200 DPI, 2x4.5cm, <20KB) for NSDL e-Gov and UTIITSL PAN applications.
NSDL and UTIITSL online PAN application portals require applicant photographs scanned at exactly 200 DPI in color (3.5cm × 2.5cm, under 50KB) and signatures scanned at 200 DPI in black and white (2.0cm × 4.5cm, under 20KB) in JPEG format.
Why It Matters
Because permanent account numbers (PAN) are printed onto physical PVC cards using automated industrial card embossers, the NSDL and UTIITSL portals run automated pre-upload validators. If an uploaded photo or signature does not match the mandatory 200 DPI header metadata or exceeds the strict 50KB/20KB size boundaries, the submission is rejected immediately.
Understanding the 200 DPI Header Requirement
Most digital cameras and smartphones save images with default 72 DPI or 96 DPI metadata headers. Even if the pixel dimensions are large, the NSDL upload validation script inspects the EXIF resolution tags inside the file header. If the resolution is not set to 200 DPI, the portal returns an error stating 'Invalid DPI or Resolution'.
Setting 200 DPI is not merely changing image size—it establishes the physical print density. At 200 DPI, a 3.5 cm × 2.5 cm photograph corresponds to exactly 276 pixels wide by 197 pixels high. ToolMela PAN Card Crop automatically writes the required 200 DPI EXIF tags directly into the JPEG file header during export.
- Photo DPI: Exactly 200 DPI color image (276 × 197 pixels).
- Signature DPI: Exactly 200 DPI monochrome image (157 × 354 pixels).
- Metadata Compliance: Valid JFIF/EXIF resolution density tags required.
Photo vs. Signature Sizing Specifications
The aspect ratio of a PAN photo differs from a standard passport photo. While passport photos are 3.5×4.5 cm (portrait), PAN card photos are 3.5 cm high by 2.5 cm wide (or 2.5×3.5 cm depending on the portal's orientation axis).
For signatures, NSDL mandates a wide horizontal box: 2.0 cm height by 4.5 cm width. The signature must occupy at least 80% of this box without touching the outer borders. Using black ink on clean white paper ensures that the signature engraves legibly onto the finished plastic card.
Digital Signature Contrast and Line Weight
During physical PAN card production, signatures are printed using thermal dye sublimation or laser engraving. Faint pencil strokes or thin ballpoint pens under poor lighting produce faded, broken signatures on the final card.
Use a medium or bold black pen to sign. When preparing the scan, increase the image contrast so that the paper background becomes pure 100% white, eliminating scanner gray haze and paper texture.
NSDL / UTIITSL PAN Card Document Upload Specifications
| Document | Dimensions | Resolution (DPI) | Max File Size | Color Mode |
|---|---|---|---|---|
| Applicant Photo | 3.5 cm × 2.5 cm | 200 DPI | 50 KB | 24-bit Color |
| Applicant Signature | 2.0 cm × 4.5 cm | 200 DPI | 20 KB | Monochrome / Grayscale |
| Proof of Identity (POI) | Standard A4 | 200 DPI | 300 KB | Black & White (PDF) |
| Proof of Address (POA) | Standard A4 | 200 DPI | 300 KB | Black & White (PDF) |
| Proof of Date of Birth | Standard A4 | 200 DPI | 300 KB | Black & White (PDF) |
Step-by-Step Workflow
1. Crop Applicant Photo
Use ToolMela PAN Card Crop to frame the headshot to 3.5×2.5 cm.
2. Clean Signature Scan
Crop handwritten signature to 2.0×4.5 cm and maximize black-and-white contrast.
3. Inject 200 DPI Headers
Confirm the export engine sets the internal EXIF resolution to exactly 200 DPI.
4. Verify Byte Limits
Check that the photo file is <50KB and the signature is <20KB.
5. Upload to NSDL / UTIITSL
Submit the compliant JPEG files directly into the online PAN application portal.
Professional Best Practices & Pro Tips
- •Do not sign across lines or grids; sign on pure white printer paper to prevent grid lines from appearing on your PAN card.
- •Keep signature file size between 12KB and 18KB; files under 8KB often trigger low-resolution compression warnings.
- •Check that your full face is visible with a neutral expression against a plain light background.
- •If you do not have a scanner, take a steady phone photo in daylight and use ToolMela's contrast booster to convert the background to clean white.
A citizen applying for an e-PAN card on the Protean (NSDL) portal was blocked by the error message 'Invalid DPI: Upload file at 200 DPI'. Their phone camera had saved the photo at 72 DPI. Using ToolMela's PAN Card Crop utility, they loaded the headshot, selected the NSDL preset, which automatically scaled the image to 2.5×3.5 cm at 200 DPI (38KB) and their signature to 2×4.5 cm at 200 DPI (16KB), allowing the application to complete smoothly.
Common Mistakes to Avoid
Technical Realities & Limitations
Physical verification and dispatch of the laminated PAN card typically takes 7–14 working days following successful digital document upload.
Apply This Workflow With ToolMela Utilities
Frequently Asked Questions
Why does NSDL require exactly 200 DPI for photos and signatures?
The 200 DPI standard aligns directly with the automated laser card engraving hardware used by the government to print physical PAN cards.
Can I sign in blue ink for a PAN card application?
While blue ink is technically accepted, NSDL and UTIITSL strongly recommend black ink because black ink provides superior contrast for digital card engraving.
What is the maximum file size for supporting documents on NSDL?
Supporting documents (Identity, Address, and DOB proofs) must be uploaded as PDF files under 300 KB each.
Can a minor sign the PAN card application form?
For minor applicants (under 18 years old), the parent or legal representative must sign. The minor's photograph is not printed; instead, the card displays 'Minor'.
How can I change the DPI of an existing image without photoshop?
ToolMela DPI Changer allows you to upload any JPEG or PNG and instantly rewrite the EXIF density metadata to 200, 300, or 600 DPI in your browser.