Why does my government PDF show a yellow question mark?

Indian government PDFs are digitally signed using certificates from NIC, eMudhra, or other CCA India licensed authorities. Adobe Acrobat and most PDF viewers don't include India's Root Certifying Authority (RCAI) in their default trusted certificate store. So even though the signature is completely valid and legally recognised under the Information Technology Act 2000, your PDF viewer shows a yellow question mark because it cannot automatically verify the issuer. Kagazo checks your PDF against the actual CCA India trust hierarchy and gives you a copy with a permanent green tick visible on any device.

Is my document safe? Do you store my PDF?

Your PDF is processed entirely in memory during verification. We never write your file to disk, never store it on our servers, and never share it with any third party. The file is deleted from memory immediately after verification is complete. You can also verify this by checking our open source backend code.

Which documents does Kagazo support?

Kagazo supports any PDF digitally signed under India's CCA certificate hierarchy. This includes e-Aadhaar, PAN card, DigiLocker documents, ITR-V, Form 16, and all state government certificates from Tamil Nadu e-District, AP and Telangana MeeSeva, Karnataka Nadakacheri and eJanma, Kerala Sevana portal, and more.

My Aadhaar PDF is password protected. Will it work?

Yes. Enter your Aadhaar password (first four letters of your name in capital letters followed by your birth year, for example RAMA1995) in the password field that appears after you upload your e-Aadhaar PDF. We decrypt it in memory, verify the signature, and return a verified copy.

What is the difference between "Signature Valid" and "Signature Unknown"?

Signature Valid means the document is genuinely issued by the government authority and has not been modified. Signature Unknown means your PDF viewer cannot verify the certificate chain — this is a viewer configuration issue, not a problem with your document. Signature Invalid means the document may have been tampered with or re-saved after signing.

Does this work on mobile?

Yes. Kagazo is fully mobile responsive and works on any Android or iOS browser. No app installation required. Simply open kagazo.in on your phone browser, upload your PDF and verify instantly.

IBPS & Railway RRB Biometric Standard

Left Thumb Impression (LTI) Resizer & Ridge Sharpener

Enhance papillary friction ridges, clean ink stamp smudges, and format your Left Thumb Impression photo strictly to 240×240 pixels (20KB–50KB) in JPEG format for IBPS, SBI PO, and Railway RRB recruitment.

100% In-Memory RAM Privacy: Biometric thumb impressions are processed exclusively in volatile computer RAM and instantly wiped upon download. Zero data persistence.

Upload Left Thumb Impression (LTI) Photo

Sharpens faint friction ridges, cleans smudges, and budgets strictly to 20KB–50KB at 240×240 px for IBPS, SBI, and Railway recruitment.

Choose Thumb Photo

Frequently Asked Questions

Q:Which hand thumb impression is required for IBPS and Bank PO exams?

IBPS, SBI, and most national banks strictly require the Left Thumb Impression (LTI). If a candidate does not have a left thumb, right thumb impression may be used with an explanatory note during document verification.

Q:What are the official dimensions and file size for IBPS thumb impressions?

IBPS requires 240 × 240 pixels at 200 DPI strictly between 20KB and 50KB in JPEG/JPG format. Our tool automatically applies these exact limits.

Q:What ink color should be used for the thumb print?

Blue or Black ink stamp pad impressions are standard and officially accepted across SSC, RRB, and IBPS portals.

Q:How does the tool sharpen faint or smudged thumb prints?

The engine applies Contrast Limited Adaptive Histogram Equalization (CLAHE) and unsharp masking to enhance the contrast between papillary friction ridges and valleys while cleaning off-white paper smudges.

Recruitment Portal Guidelines

IBPS PO / Clerk / SO

240 × 240 px • 20 KB to 50 KB • 200 DPI

Railway RRB NTPC / Group D

240 × 240 px • 20 KB to 50 KB • Clear Ridges

State Police Recruitment

Unsmudged clear print on white paper

Related Exam Tools

Black Ink Signature Extractor IBPS Photo & Signature Resizer RRB Photo & Signature Resizer

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