Alok Singh - DEV Community

Alok Singh

Nov 10

How to Extract Text From an Image or Screenshot (English and Hindi)

#ocr #webdev #tutorial #tooling

3 min read

Alok Singh

Nov 10

How to Compress a PDF Without Uploading It

#pdf #privacy #webdev #tutorial

3 min read

Alok Singh

Nov 10

CTC to In-Hand Salary: How to Work Out Your Monthly Take-Home in India

#career #productivity #tutorial #webdev

3 min read

Alok Singh

Nov 9

iOS Silent Push Notifications That Actually Arrive: content-available, Priority 5 and the Throttling Rules

#ios #swift #pushnotifications

1

4 min read

Alok Singh

Nov 8

How to Upscale an Image 2 or 4 With AI, Right in Your Browser

#ai #webdev #tutorial #tooling

3 min read

Alok Singh

Nov 8

Play Minesweeper Online: How to Read the Numbers and Win

#gamedev #tutorial #tooling #webdev

3 min read

Alok Singh

Nov 8

How Islamic Prayer Times Are Calculated (and Why Methods Differ)

#productivity #webdev #tutorial #tooling

3 min read

Alok Singh

Nov 7

How to Calculate Exact Age in Years, Months and Days

#webdev #tutorial #tooling

3 min read

Alok Singh

Nov 7

How to Test Your Internet Speed (and What the Numbers Mean)

#webdev #tutorial #tooling

3 min read

Alok Singh

Nov 7

How to Convert CSV to Excel (and Keep Leading Zeros and Numbers Intact)

#tooling #webdev #tutorial

3 min read

Alok Singh

Nov 6

How to Cut an MP3 and Make a Ringtone in Your Browser

#webdev #tutorial #tools

3 min read

Alok Singh

Nov 6

Why Your Universal Links Open Safari: Validating the apple-app-site-association File

#tooling #webdev #tutorial

3 min read

Alok Singh

Nov 4

How to Remove Location and EXIF Data From Photos Before You Share Them

#privacy #security #photography #webdev

3 min read

Alok Singh

Oct 28

How to Decode and Verify a JWT in Your Browser (Without Pasting It Into a Server)

#jwt #security #javascript #webdev

4 min read

Alok Singh

Oct 28

Writing PrivacyInfo.xcprivacy Without Guesswork: How My Browser-Based Privacy Manifest Generator Models Apple's Rules

#ios #security #privacy #webdev

10 min read

Alok Singh

Oct 28

Reading a .mobileprovision File in the Browser: Finding the Plist, Parsing It Without a DOM, and Decoding Certificates by Hand

#ios #security #webdev #tutorial

12 min read

Alok Singh

Oct 27

Background Removal in the Browser: U2-Net on ONNX Runtime Web, a Zoomed Second Pass and a Guided-Filter Matte

#javascript #machinelearning #webdev #ai

12 min read

Alok Singh

Oct 27

Generating Swift Codable Types from JSON in the Browser: Number Literals, Optional Merging and the convertFromSnakeCase Rules

#swift #ios #json #webdev

12 min read

Alok Singh

Oct 27

Redacting a PDF So the Text Is Really Gone: Rebuilding Pages with pdf.js and pdf-lib, Then Checking the Result

#pdf #privacy #javascript #webdev

11 min read

Alok Singh

Oct 24

How to Test iOS Push Notifications on a Real Device (APNs .p8 Keys, Sandbox vs Production, and the Errors You'll Hit)

#ios #swift #mobile #tutorial

1

5 min read

Alok Singh

Oct 22

Shipping a 4K Wallpaper App Without Running Out of Memory: ImageIO Downsampling, Core Image Blur and Add-Only Photos Access

#ios #mobile #performance #swift

9 min read

Alok Singh

Oct 22

The Sending Side of APNs: A Mac Push Tester with Keychain Certificates, URLSession Client Auth and HTTP/2

#api #ios #mobile #swift

9 min read

Alok Singh

Oct 22

From Barcode to PDF: Building a Private, Offline Medication Tracker with VisionKit, WidgetKit and PDFKit

#ios #mobile #swift #tutorial

11 min read

Alok Singh

Oct 22

Tic Tac Toe in SwiftUI, Done Properly: Value-Type Game State, Win Detection and an Unbeatable Minimax Opponent

#gamedev #ios #swift #tutorial

1

9 min read

Alok Singh

Oct 22

Building an Offline-First Bible Reader on iOS: Bundled SQLite, Full-Text Search and iCloud-Synced Notes

#database #ios #mobile #softwaredevelopment

12 min read

Alok Singh

Oct 22

Stop Hand-Rolling Unit Conversions: Foundation's Measurement, Dimension and MeasurementFormatter in Practice

#ios #softwaredevelopment #swift #tutorial

9 min read

Alok Singh

Oct 22

Convert-As-You-Type Currency Conversion in Swift: Decimal Maths, Cached Rates and Locale-Aware Formatting

#ios #mobile #programming #swift

9 min read

Alok Singh

Oct 22

Building an Offline eBook Reader for iOS: Downloads, Typography Settings, Reading Progress That Survives Font Changes, and...

#ios #mobile #softwaredevelopment #swift

10 min read

Alok Singh

Oct 22

The Device Side of APNs: Building a Push Notification Test Client in Swift

#ios #mobile #programming #swift

10 min read

Alok Singh

Oct 22

Medication Reminders That Actually Fire: Local Notifications, the 64-Notification Limit and Supply Math

#ios #mobile #privacy #softwaredevelopment

10 min read

Alok Singh

Oct 22

Building a Real-Time Mic-to-Speaker App on iOS with AVAudioEngine

#ios #mobile #swift #tutorial

16 min read

Alok Singh

Oct 22

A Practical Guide to iOS Haptics: UIFeedbackGenerator, SwiftUI sensoryFeedback and Core Haptics with AHAP

#ios #mobile #swift #tutorial

10 min read

Alok Singh

Oct 22

Text Plus Audio, Fully Offline: Building a Prayer App with AVAudioPlayer and Lock-Screen Controls

#ios #mobile #swift #tutorial

10 min read

Alok Singh

Oct 22

A Document Scanner in an Afternoon: VisionKit's Camera, Core Image Clean-Up and AirPrint

#ios #mobile #swift #tutorial

9 min read

Alok Singh

Oct 22

Building a Chromatic Guitar Tuner on iOS: Real-Time Pitch Detection with AVAudioEngine and Accelerate

#ios #mobile #programming #softwaredevelopment

11 min read

Alok Singh

Oct 22

Building a Live iOS Component Catalogue: UIKit and SwiftUI Side by Side, Real Demos, and Code Snippets That Don't Rot

#ios #mobile #swift #ui

9 min read

Alok Singh

Oct 22

Building an AdMob Earnings Dashboard for iOS: Google OAuth with PKCE, the AdMob Reporting API, Pacific-Time 'Today', and...

#api #ios #mobile #softwaredevelopment

1

11 min read

Alok Singh

Oct 22

Drag-to-Connect and Game Center Leaderboards in a SwiftUI Puzzle Game, Updated for iOS 26

#gamedev #ios #mobile #swift

9 min read

Alok Singh

Oct 22

Building a Live Temple Darshan App for iOS: HLS Streaming, Picture-in-Picture, Time-Zone-Correct Aarti Reminders and...

#ios #mobile #streaming #swift

10 min read

Alok Singh

Oct 22

Building a Hashtag Copier for iOS: Clean Tags, Editable Lists, Clipboard Privacy and Instagram's New Five-Hashtag Limit

#ios #mobile #softwaredevelopment #tools

9 min read

Alok Singh

Oct 22

Building an Offline Quotes App in SwiftUI: a 50,000-Quote Library, a Daily Quote Without a Server, Honest Streaks and...

#ios #mobile #softwaredevelopment #swift

9 min read

Alok Singh

Oct 22

Animating Algorithms in SwiftUI: A Step-Recorder Pattern for Visualising Sorts, Searches and Graphs

#algorithms #computerscience #ios #swift

11 min read

Alok Singh

Oct 22

Building a Tap-to-Match Marble Game with SpriteKit and SwiftUI: Physics, Cluster Matching, Timers, Lives and Power-Ups

#gamedev #ios #swift #tutorial

10 min read

Alok Singh

Oct 22

Building a Low-Latency Virtual Piano and Drum Kit on iOS with AVAudioEngine

#ios #mobile #softwaredevelopment #swift

10 min read

Writing Debut