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.

Next-Gen WebP, AVIF & JPEG Compression Engine

Image Optimizer & Compressor

Compress and optimize your photos for web speed and portal compliance. Reduce file size up to 90% without noticeable quality loss. Convert to WebP, resize dimensions, and batch export with 100% in-browser privacy.

100% In-Browser RAM Privacy Instant Client-Side Processing Batch ZIP Archive Download

Drop your images here, or browse

Supports JPEG, PNG, WebP, AVIF, BMP, GIF. Batch upload up to 50 photos.

⚡ WebP & AVIF Ultra Compress🔒 100% In-Browser Privacy📦 ZIP Export

Image Format Compression Efficiency Matrix

Compare performance metrics across traditional and modern image codecs.

Format Codec	Typical Compression	Alpha Transparency	Browser Support	Best Use Case
WebP	65% – 85% reduction	Yes (Lossy & Lossless)	97.8% (All Modern Browsers)	High-speed websites, blogs, e-commerce
AVIF	75% – 92% reduction	Yes (HDR & 10/12-bit)	93.4% (Chrome, Safari, Firefox)	Hero headers, photography, modern PWAs
JPEG / JPG	40% – 60% reduction	No	100% Universal	Government exam portals, print lab submission
PNG	10% – 30% reduction	Yes (Lossless)	100% Universal	Logos, crisp typography, UI screenshots

Frequently Asked Questions

Everything you need to know about optimizing images with zero server risk.

How does Kagazo Image Optimizer compress images without losing visible quality?

Kagazo utilizes perceptual quantization and modern browser compression algorithms (WebP and AVIF). By discarding high-frequency pixel noise that is undetectable to the human eye while preserving sharp edges and color gradients, files can shrink by 70% to 90% with virtually zero perceptible quality loss.

Why should I convert my JPG and PNG images to WebP or AVIF?

WebP is supported by 97%+ of all modern web browsers and yields 25–35% smaller file sizes than traditional JPEG at comparable visual quality. AVIF offers even higher compression efficiency, drastically improving Google PageSpeed, Core Web Vitals, and mobile loading times.

Are my private photos uploaded to any external server or cloud?

Never. Kagazo guarantees 100% Sovereign In-Browser RAM Privacy. Every compression pass, resize transformation, and format conversion executes exclusively within your browser’s volatile memory via HTML5 Canvas and typed arrays. Zero bytes are transmitted to any server.

Can I compress images to an exact target file size, such as 100KB or 200KB?

Yes! Use the "Target Max KB" input to set a specific threshold (e.g. 200KB for government exam portals or SSC/UPSC uploads). The engine performs a multi-step binary bisection search to deliver the highest possible quality that strictly fits within your target limit.

Can I batch compress multiple images and download them as a single ZIP file?

Yes. You can drag and drop up to 50 images at once. The engine processes them in parallel and provides a 1-Click "Download All as ZIP" button powered by client-side JSZip.