# One Day Developers (OD2) > One Day Developers (OD2) delivers high-quality software, mobile apps, and integration services in record time. Your partner for rapid innovation and reliable project delivery. ## Core Pages & Tools - [about](https://od2.in/about) - [about/company](https://od2.in/about/company) - [billing/admin/companies](https://od2.in/billing/admin/companies) - [billing/login](https://od2.in/billing/login) - [calculator](https://od2.in/calculator) - [calculator/attendance](https://od2.in/calculator/attendance) - [calculator/cgpa](https://od2.in/calculator/cgpa) - [calculator/gpa](https://od2.in/calculator/gpa) - [calculator/university](https://od2.in/calculator/university) - [calculator/university/compare](https://od2.in/calculator/university/compare) - [captcha](https://od2.in/captcha) - [captcha/v2](https://od2.in/captcha/v2) - [captcha/v3](https://od2.in/captcha/v3) - [changelog](https://od2.in/changelog) - [contact](https://od2.in/contact) - [contributions](https://od2.in/contributions) - [contributions/otp-detector](https://od2.in/contributions/otp-detector) - [contributions/trading-tools](https://od2.in/contributions/trading-tools) - [contributions/trading-tools/privacy](https://od2.in/contributions/trading-tools/privacy) - [contributions/windows-pid-manager](https://od2.in/contributions/windows-pid-manager) - [contributors](https://od2.in/contributors) - [convert-image-to-blob](https://od2.in/convert-image-to-blob) - [disclaimer](https://od2.in/disclaimer) - [discord-webhook](https://od2.in/discord-webhook) - [email-tester](https://od2.in/email-tester) - [game](https://od2.in/game) - [game/imposter](https://od2.in/game/imposter) - [game/imposter/app](https://od2.in/game/imposter/app) - [newsgrid](https://od2.in/newsgrid) - [passport-photo-printing](https://od2.in/passport-photo-printing) - [privacy](https://od2.in/privacy) - [privacy/android](https://od2.in/privacy/android) - [privacy/android/app/temp-mail](https://od2.in/privacy/android/app/temp-mail) - [privacy/android/game/imposter](https://od2.in/privacy/android/game/imposter) - [products](https://od2.in/products) - [products/od2-billing-system](https://od2.in/products/od2-billing-system) - [qr-generator](https://od2.in/qr-generator) - [tattoo](https://od2.in/tattoo) - [tattoo/a4-export](https://od2.in/tattoo/a4-export) - [tattoo/generator](https://od2.in/tattoo/generator) - [tattoo/recommendations](https://od2.in/tattoo/recommendations) - [tattoo/upload](https://od2.in/tattoo/upload) - [temp-mail](https://od2.in/temp-mail) - [temp-mail/app](https://od2.in/temp-mail/app) - [terms](https://od2.in/terms) - [trending](https://od2.in/trending) - [trending/hashtags](https://od2.in/trending/hashtags) - [trending/keywords](https://od2.in/trending/keywords) - [updates](https://od2.in/updates) - [url-encoder-decoder](https://od2.in/url-encoder-decoder) ## University Calculators - [Main Calculator Home](https://od2.in/calculator) - [https://od2.in](https://od2.in) - [about](https://od2.in/about) - [about/company](https://od2.in/about/company) - [billing/admin/companies](https://od2.in/billing/admin/companies) - [billing/login](https://od2.in/billing/login) - [calculator/attendance](https://od2.in/calculator/attendance) - [calculator/cgpa](https://od2.in/calculator/cgpa) - [calculator/gpa](https://od2.in/calculator/gpa) - [calculator/university](https://od2.in/calculator/university) - [calculator/university/compare](https://od2.in/calculator/university/compare) - [captcha](https://od2.in/captcha) - [captcha/v2](https://od2.in/captcha/v2) - [captcha/v3](https://od2.in/captcha/v3) - [changelog](https://od2.in/changelog) - [contact](https://od2.in/contact) - [contributions](https://od2.in/contributions) - [contributions/otp-detector](https://od2.in/contributions/otp-detector) - [contributions/trading-tools](https://od2.in/contributions/trading-tools) - [contributions/trading-tools/privacy](https://od2.in/contributions/trading-tools/privacy) - [contributions/windows-pid-manager](https://od2.in/contributions/windows-pid-manager) - [contributors](https://od2.in/contributors) - [convert-image-to-blob](https://od2.in/convert-image-to-blob) - [disclaimer](https://od2.in/disclaimer) - [discord-webhook](https://od2.in/discord-webhook) - [email-tester](https://od2.in/email-tester) - [game](https://od2.in/game) - [game/imposter](https://od2.in/game/imposter) - [game/imposter/app](https://od2.in/game/imposter/app) - [newsgrid](https://od2.in/newsgrid) - [passport-photo-printing](https://od2.in/passport-photo-printing) - [privacy](https://od2.in/privacy) - [privacy/android](https://od2.in/privacy/android) - [privacy/android/app/temp-mail](https://od2.in/privacy/android/app/temp-mail) - [privacy/android/game/imposter](https://od2.in/privacy/android/game/imposter) - [products](https://od2.in/products) - [products/od2-billing-system](https://od2.in/products/od2-billing-system) - [qr-generator](https://od2.in/qr-generator) - [tattoo](https://od2.in/tattoo) - [tattoo/a4-export](https://od2.in/tattoo/a4-export) - [tattoo/generator](https://od2.in/tattoo/generator) - [tattoo/recommendations](https://od2.in/tattoo/recommendations) - [tattoo/upload](https://od2.in/tattoo/upload) - [temp-mail](https://od2.in/temp-mail) - [temp-mail/app](https://od2.in/temp-mail/app) - [terms](https://od2.in/terms) - [updates](https://od2.in/updates) - [url-encoder-decoder](https://od2.in/url-encoder-decoder) - [Anna University](https://od2.in/calculator/university/anna-university) - [Delhi University (CBCS Pattern)](https://od2.in/calculator/university/delhi-university-cbcs-pattern) - [Government College of Technology](https://od2.in/calculator/university/government-college-of-technology) - [Jawaharlal Nehru University](https://od2.in/calculator/university/jawaharlal-nehru-university) - [Kalasalingam University](https://od2.in/calculator/university/kalasalingam) - [Sri Eshwar college of Engineering ](https://od2.in/calculator/university/sri-eshwar-college-of-engineering-) - [Vellore Institute of Technology](https://od2.in/calculator/university/vellore-institute-of-technology) ## Trending Search & Insights - [Trending Home](https://od2.in/trending) - [https://od2.in](https://od2.in) - [about](https://od2.in/about) - [about/company](https://od2.in/about/company) - [billing/admin/companies](https://od2.in/billing/admin/companies) - [billing/login](https://od2.in/billing/login) - [captcha](https://od2.in/captcha) - [captcha/v2](https://od2.in/captcha/v2) - [captcha/v3](https://od2.in/captcha/v3) - [changelog](https://od2.in/changelog) - [contact](https://od2.in/contact) - [contributions](https://od2.in/contributions) - [contributions/otp-detector](https://od2.in/contributions/otp-detector) - [contributions/trading-tools](https://od2.in/contributions/trading-tools) - [contributions/trading-tools/privacy](https://od2.in/contributions/trading-tools/privacy) - [contributions/windows-pid-manager](https://od2.in/contributions/windows-pid-manager) - [contributors](https://od2.in/contributors) - [convert-image-to-blob](https://od2.in/convert-image-to-blob) - [disclaimer](https://od2.in/disclaimer) - [discord-webhook](https://od2.in/discord-webhook) - [email-tester](https://od2.in/email-tester) - [game](https://od2.in/game) - [game/imposter](https://od2.in/game/imposter) - [game/imposter/app](https://od2.in/game/imposter/app) - [newsgrid](https://od2.in/newsgrid) - [passport-photo-printing](https://od2.in/passport-photo-printing) - [privacy](https://od2.in/privacy) - [privacy/android](https://od2.in/privacy/android) - [privacy/android/app/temp-mail](https://od2.in/privacy/android/app/temp-mail) - [privacy/android/game/imposter](https://od2.in/privacy/android/game/imposter) - [products](https://od2.in/products) - [products/od2-billing-system](https://od2.in/products/od2-billing-system) - [qr-generator](https://od2.in/qr-generator) - [tattoo](https://od2.in/tattoo) - [tattoo/a4-export](https://od2.in/tattoo/a4-export) - [tattoo/generator](https://od2.in/tattoo/generator) - [tattoo/recommendations](https://od2.in/tattoo/recommendations) - [tattoo/upload](https://od2.in/tattoo/upload) - [temp-mail](https://od2.in/temp-mail) - [temp-mail/app](https://od2.in/temp-mail/app) - [terms](https://od2.in/terms) - [trending/hashtags](https://od2.in/trending/hashtags) - [trending/keywords](https://od2.in/trending/keywords) - [updates](https://od2.in/updates) - [url-encoder-decoder](https://od2.in/url-encoder-decoder) - [google](https://od2.in/trending/google) - [dev-to](https://od2.in/trending/dev-to) - [hacker-news](https://od2.in/trending/hacker-news) - [wikipedia](https://od2.in/trending/wikipedia) - [github](https://od2.in/trending/github) ## Articles & Guides - [How to Migrate and Export Data from Supabase with Node.js](https://blog.od2.in/developer-tools/how-to-migrate-and-export-data-from-supabase-with-node-js/) - [Real-Time Email Tracking: Enhance Your Communication Strategy](https://blog.od2.in/developer-tools/real-time-email-tracking-enhance-your-communication-strategy/) - [The Ultimate College Attendance Calculator: How Many Classes Can You Skip?](https://blog.od2.in/education/the-ultimate-college-attendance-calculator-how-many-classes-can-you-skip/) - [The Ultimate Guide to Calculating Your University CGPA & SGPA](https://blog.od2.in/education/the-ultimate-guide-to-calculating-your-university-cgpa-sgpa/) - [Comparing University Grading Schemas in India: How Strict is Your College?](https://blog.od2.in/education/comparing-university-grading-schemas-in-india-how-strict-is-your-college/) - [Mastering Imposter Party OD2: How to Win as Crewmate or Imposter](https://blog.od2.in/game-strategy/mastering-imposter-party-od2-how-to-win-as-crewmate-or-imposter/) - [Introducing OD2 Temp Mail App: The Ultimate Solution for Disposable Emails on Android](https://blog.od2.in/tools-utilities/introducing-od2-temp-mail-app-the-ultimate-solution-for-disposable-emails-on-android/) - [OTP Detector: The Intelligent JavaScript Library for OTP Extraction](https://blog.od2.in/contributions/otp-detector-the-intelligent-javascript-library-for-otp-extraction/) - [How to Test Email Content for Free: A Complete Guide to OD2’s Test Mail Tool](https://blog.od2.in/developer-tools/how-to-test-email-content-for-free-a-complete-guide-to-od2s-test-mail-tool/) - [100% Free Advanced QR Code Generator: Custom Logos, 4K Export & No Sign-up](https://blog.od2.in/tools-utilities/100-free-advanced-qr-code-generator-custom-logos-4k-export-no-sign-up/) ## Contact & Support - [Help & Contact](https://od2.in/contact) - [About One Day Developers](https://od2.in/about)