Tyagi
The Digital Operating System
for Modern Creators
TyagiHub isn't a website — it's a modular, installable digital ecosystem. PDF systems, AI utilities, security tools, editors, learning platforms, stock libraries, and knowledge quizzes — all converging into a unified, browser-native creative universe. Install any module as a standalone app. Work offline. No subscriptions.
PDF Tools
Edit, merge, sign, annotate
Image Studio
Convert, edit, optimize
Shield
Security & privacy tools
Learn
Courses & revision system
GK Quiz
Daily knowledge challenges
Editor
Canvas-style creative suite
Discover
Curated tools & content
Stock
Assets, fonts, SVGs, icons
Your entire creative toolkit — in the browser
TyagiHub Tools is the most comprehensive browser-native utility ecosystem ever assembled in a single platform. From professional-grade PDF editing — featuring real-time annotation layers, signature embedding, page management, watermarking, form filling, and flattened export using html2canvas and pdf-lib — to a universal image converter supporting over 70 input and output formats including PNG, WEBP, AVIF, HEIC, TIFF, TGA, EXR, and dozens of legacy and modern formats. Every operation executes entirely client-side using the Web APIs, Canvas API, and WebAssembly — nothing leaves your device, nothing is transmitted to any server. The privacy architecture is absolute. Beyond PDF and image tools, the ecosystem spans QR code generation, barcode creation, Base64 encoding and decoding, URL encoding for internationalized strings, password strength analysis, hash generation (MD5, SHA-256, SHA-512), ZIP compression utilities, OCR text extraction from scanned documents, text case converters, JSON formatters, and AI-assisted content utilities. Each tool is engineered with a professional dashboard interface, drag-and-drop upload zones, real-time progress feedback, toast notifications, keyboard shortcuts, and mobile-first responsive layouts. The entire tools suite is installable as a standalone PWA, enabling full offline operation without any native app store dependency.
- PDF editing with annotations, signatures, watermarks, page tools
- Universal image conversion — 70+ formats, batch processing
- OCR text extraction from scanned PDFs and images
- Zero server upload — all processing runs locally in browser
- Installable as offline-capable PWA — works without internet
- Encoders, decoders, generators, converters — 80+ tools total
Security-grade tools for developers, analysts & privacy advocates
TyagiHub Shield is a professional-grade cybersecurity and privacy utility ecosystem built entirely for browser-side operation. Every cryptographic operation — from AES encryption to SHA-512 hashing — executes locally using the native Web Crypto API, ensuring your sensitive data never traverses the network. Shield was engineered for developers who demand security tooling without the overhead of installing native applications, security researchers who need lightweight analysis utilities, and privacy-conscious individuals who require provably secure data transformation. The ecosystem includes advanced password generators with entropy scoring, full-spectrum hash utilities, Base64 encoding and decoding systems, URL encoding for internationalized data, integrity verification tools, symmetric encryption interfaces, and developer-grade data transformation pipelines. Every UI surface is crafted to match the precision of professional desktop security suites — with dark terminal-inspired aesthetics, monospaced readouts, real-time entropy indicators, and copy-to-clipboard workflows optimized for developer speed.
Password Generator
Cryptographically secure, entropy-scored passwords with customizable character sets, length, and complexity rules. Generates from Web Crypto API randomness — never pseudo-random.
Hash Generator
MD5, SHA-1, SHA-256, SHA-384, SHA-512, and BLAKE2 hashing via WebCrypto. Supports file hashing, text hashing, and HMAC generation for authentication workflows.
URL Encoder
Full RFC 3986 compliant URL encoding and decoding. Handles Unicode, emoji, non-Latin scripts, query parameter parsing, and special character escaping for API workflows.
Base64 Suite
UTF-8 safe Base64 encoding and decoding with full Unicode, emoji, and multi-language support via TextEncoder. Handles multiline content, data URIs, and MIME boundary encoding.
Privacy Auditor
Browser fingerprint analysis, cookie inspection, storage audit, network header review, and tracker detection — giving users visibility into their own browser's privacy posture.
Integrity Checker
File and text integrity verification using cryptographic signatures. Compare hashes across inputs, verify download authenticity, and detect data corruption with precision.
A professional editor that rivals Adobe — for free
The TyagiHub Editor Suite is a professional-grade, browser-native creative editing platform that brings Canva-level accessibility to Adobe Acrobat-level power. The PDF Editor is the centrepiece — a fully featured document editing environment built on PDF.js for pixel-perfect rendering and pdf-lib for standards-compliant PDF generation. It supports real-time text annotation with full typography controls (font family, size, weight, style, colour, alignment), freehand drawing with pressure-sensitive brush simulation, shape insertion across eight geometric forms with configurable stroke, fill, and dash properties, digital signature creation via draw-to-sign, type-to-sign, or image upload workflows, sticky note and comment threads, whiteout and redaction boxes, watermark layers with opacity and rotation controls, page management including rotation, duplication, deletion, extraction, and reordering, QR code embedding, interactive form field creation, and find-and-replace across annotation layers. The export engine uses html2canvas to capture every page — merging the original PDF render with all annotation overlays — producing a flattened PDF that displays correctly in every PDF viewer worldwide, with zero data transmitted externally.
- Full PDF editor — text, draw, shapes, signatures, watermarks
- Canva-style drag-and-drop with layer system and snap grid
- html2canvas export — all edits embedded in downloaded PDF
- OCR text extraction from scanned documents
- Form filling, QR codes, page management, find & replace
- Undo/redo history, keyboard shortcuts, fullscreen mode
A structured learning system built for developers
TyagiHub Learn is a developer-centric knowledge platform engineered for focused, structured study without the distractions of traditional learning management systems. Built as a modular PWA, it delivers bite-sized coding tutorials, AI and machine learning foundations, cybersecurity learning paths, frontend engineering deep-dives, system design walkthroughs, and modern developer toolchain guides — all organized into concise, scannable formats designed for working professionals with limited study windows. The platform features a built-in revision system with spaced-repetition principles, allowing learners to surface weak topics automatically based on their quiz performance and note interactions. Each learning module includes interactive code sandboxes for hands-on practice, annotatable notes with markdown rendering, progress tracking dashboards showing completion rates across topics, and offline access via service workers — meaning your study materials are always available regardless of connectivity. The installable PWA wraps the entire experience in a native app shell, enabling home-screen access, push reminders for daily goals, and a distraction-free reading interface that rivals dedicated e-reader applications. Teachers and content creators can use the platform as a structured note-sharing and curriculum distribution system, with shareable links and print-optimized exports built in.
- Coding, AI, cybersecurity, and system design learning paths
- Spaced repetition revision system with progress tracking
- Interactive code sandboxes embedded in every module
- Offline-capable PWA — study without internet connection
- Markdown notes, annotations, and export to PDF
Daily knowledge challenges for competitive excellence
TyagiHub GK Quiz is a comprehensive general knowledge assessment and competitive preparation platform built for students, professionals, and lifelong learners who understand that breadth of knowledge is as valuable as depth. The platform delivers daily curated question sets spanning Indian history, geography, polity, economy, science and technology, international affairs, current events, sports, culture, literature, and environmental studies — all mapped to competitive examination syllabi for UPSC, SSC, IBPS, Railways, State PSC, and major entrance examinations. Each quiz session is dynamically generated with adaptive difficulty — questions become progressively harder as accuracy improves, ensuring continuous cognitive challenge rather than repetitive memorization. The platform records granular performance metrics: accuracy rates per topic, time-per-question analysis, streak tracking, and comparative benchmarking against the TyagiHub community. A smart revision engine surfaces previously incorrect answers on a scientifically calibrated schedule based on forgetting curve research. The installable PWA enables push notifications for daily quiz reminders, offline question access for commute-mode study, and a distraction-free full-screen quiz interface.
Curated content & resources for the modern creator
A hand-curated aggregation layer surfacing the best tools, tutorials, templates, articles, and community resources from across the TyagiHub ecosystem and the broader web — organized by topic, format, and skill level.
A comprehensive engineering walkthrough of building a professional-grade, browser-native PDF editing application from scratch. Covers PDF.js rendering pipeline, canvas overlay architecture, html2canvas export strategy, pdf-lib annotation embedding, and the complete annotation persistence system that powers the TyagiHub PDF Editor. Includes 3,200-word source commentary, architecture diagrams, and working code samples for every major subsystem.
Deep dive into the Canvas API toBlob pipeline, MIME type mapping, and UTF-8 safe encoding strategies behind TyagiHub's universal image converter.
A practitioner's guide to cryptographic operations in the browser — covering SHA-256 hashing, AES-GCM encryption, and secure random generation without libraries.
Production-ready service worker, manifest, and offline-first architecture for installable browser applications with background sync support.
Everything developers need to understand percent-encoding, query parameter escaping, internationalized domain names, and common encoding pitfalls.
A growing library of free creative assets
TyagiHub Stock is a curated, open-use creative asset repository featuring SVG icon sets, illustration packs, custom typefaces, color palette collections, UI component libraries, background texture sets, gradient libraries, and animated motion graphics — all available for free download and use in personal and commercial projects without attribution requirements. The library is organized into themed collections covering technology, education, finance, healthcare, nature, abstract geometry, and data visualization. Every asset is hand-reviewed for quality, optimized for web delivery, and tagged with comprehensive metadata enabling fast search across 5,000+ individual assets. New collections drop weekly, curated by the TyagiHub design team with input from the creator community. Designers can submit their own assets for inclusion through the community contribution portal, giving creators visibility within the ecosystem while enriching the shared library for everyone.
Install any module as a standalone app
Every section of TyagiHub is independently installable as a Progressive Web App. Add any module to your home screen for native app speed, offline access, and a distraction-free experience — no app store required, no account needed, no permissions requested beyond what you explicitly grant.
Tools App
The full TyagiHub utility suite as a standalone installable app. PDF editor, image converter, security tools, encoders, decoders, QR generators — 80+ utilities running entirely offline after first load. No permissions required. Works on desktop and mobile.
Shield App
The complete cybersecurity and privacy toolkit as a home-screen app. Password generation, hash computation, encryption utilities, and privacy auditing — all running locally with the Web Crypto API. Never transmits data externally by architectural design.
Editor App
The professional PDF and image editing suite as a standalone PWA. Full annotation, signature, watermark, shape, drawing, and export capabilities — comparable to Adobe Acrobat — available offline with a single install. Touch-optimised for tablet editing.
Learn App
Structured learning paths, coding tutorials, and revision systems as an offline-first study companion. Download course modules for commute-mode study. Syncs progress across devices. Push notifications for daily study goals and spaced-repetition reminders.
GK Quiz App
Daily general knowledge challenges, competitive exam preparation, and adaptive assessment — installed as a home-screen PWA. Offline question packs covering History, Geography, Science, Current Affairs, Polity, and Economy. Daily streak tracking with performance analytics.
Full Ecosystem App
Install the complete TyagiHub platform as a single unified PWA — giving you access to all tools, editors, learning modules, security utilities, quiz systems, stock assets, and discovery feeds in one cohesive home-screen application with unified navigation and cross-module workflows.