---

Extensions Pro eliminates boilerplate by adding expressive, chainable helpers directly onto Flutter's built-in types — String, int, DateTime, List, Widget, and BuildContext. Write less, ship faster.

• Zero setup — pure Dart/Flutter extension methods, no code generation, no context providers.
• Chainable API — widget extensions compose naturally (.withPadding().withBorder().withShadow()).
• Null-safe — built for modern Dart with sound null safety throughout.
• Lightweight — only two runtime dependencies (intl, cached_network_image).

Table of Contents

• Requirements
• Installation
• Extensions Overview
• Screen & Theme Extensions
• Dialog Extensions
• Color Extensions
• Duration Extensions
• Map Extensions
• Toast Extensions
• Clipboard Extensions
• Highlight Extensions
• Nullable Safety Extensions
• Date Extensions
• Time Extensions
• Clock Extensions
• Image Network Extensions
• Local Image Extensions
• Validation Extensions
• Navigation Extensions
• Widget Extensions
• String Extensions
• Int Extensions
• SnackBar Extensions
• List Extensions
• Distance Calculator
• Unit Conversion Extensions
• Status Bar Extensions
• Contributing
• Author
• License
• Support

---

Requirements

	Minimum version
Dart SDK	^3.5.3
Flutter	>=1.17.0

Installation

Add to your pubspec.yaml:

dependencies:
  extensions_pro: ^1.0.32

Then import in your Dart file:

import 'package:extensions_pro/extensions_pro.dart';

---

Extensions Overview

Category	Extension Type	Highlights
Date	DateTime	format, age, pickers, date math
Time	DateTime	formatted strings, morning/afternoon/evening
Clock	DateTime	digital clock strings
Image (Network)	ImageNetworkExtensionsPro	progress, rounded, cached, shadow
Image (Local)	ImageLocalExtensionsPro	progress, rounded, shadow, fitted box
Validation	String	email, phone, password, OTP, card, hex, username, PIN code, IP, name
Navigation	BuildContext	push, pop, replace, clear stack, named routes
Widget	Widget	padding, border, shadow, rounded, tap, aspect ratio, safe area, hero
String	String	capitalize, reverse, palindrome, camelCase, base64, slug, initials
Int	int	roman, ordinal, words, file size, short, prime, currency, percentage
SnackBar	BuildContext	success, error, gradient, icon, persistent
List	List<T>	sort, find, chunk, dedup, toMap, groupBy, rotate, flatten
Distance	num	Haversine geo distance (km)
Unit Conversion	num	15 categories, 60+ conversions
Status Bar	BuildContext	color, brightness, show/hide
Screen & Theme	BuildContext	width, height, theme, dark mode, tablet check, keyboard, unfocus
Dialog	BuildContext	loading dialog, confirm dialog
Color	Color, String	hex conversion, lighten, darken, light/dark, blend, material swatch
Duration	Duration	mm:ss / HH:mm:ss formatting, human-readable, isZero
Map	Map<K, V>	filter by key/value, query string, isNullOrEmpty
Toast	BuildContext	lightweight overlay toast messages
Clipboard	String	copy to system clipboard
Highlight	String	highlight search matches as TextSpans
Nullable Safety	String?, List<T>?, Map<K,V>?	isNullOrEmpty, isNullOrBlank, orDefault

---

Date Extensions

// Date Picker
final date = await context.pickDate(
  dateFormatChange: 'yyyy-MM-dd',
  primaryColor: Colors.red,
  surfaceColor: Colors.white,
  headerTextColor: Colors.white,
);
// Output: "2024-11-06"

// Weekday from int (1 = Monday … 7 = Sunday)
3.toWeekDay();                    // "Wednesday"
3.toWeekDay(isHalfName: true);    // "Wed"

// Difference between two dates
final diff = DateTime(2024, 11, 19).differenceInDays(DateTime(2024, 11, 15));
diff.inDays;   // 4
diff.inHours;  // 96

// Format
DateTime.now().format('yyyy-MM-dd');   // "2024-11-25"
DateTime.now().format('dd MMM yyyy');  // "25 Nov 2024"

// Start / End of day
DateTime.now().startOfDay;  // 2024-11-25 00:00:00
DateTime.now().endOfDay;    // 2024-11-25 23:59:59

// Age
DateTime(1990, 11, 25).age;  // 34

// Relative checks
DateTime.now().isToday;      // true
DateTime.now().isYesterday;  // false
DateTime.now().isTomorrow;   // false

// Date arithmetic
DateTime.now().addDays(5);        // 5 days later
DateTime.now().subtractDays(10);  // 10 days earlier
DateTime.now().addMonths(3);      // 3 months later
DateTime.now().subtractYears(1);  // 1 year earlier

// Day name
DateTime.now().weekdayName;  // "Monday"

// Weekend / weekday checks
DateTime(2024, 11, 30).isWeekend;   // true  (Saturday)
DateTime(2024, 11, 25).isWeekday;   // true  (Monday)

// Leap year and days-in-month
DateTime(2024, 1, 1).isLeapYear;    // true
DateTime(2024, 2, 10).daysInMonth;  // 29

// Compare calendar day, ignoring time-of-day
DateTime(2024, 11, 25, 8, 0).isSameDay(DateTime(2024, 11, 25, 23, 30)); // true

// Relative time string
DateTime.now().subtract(const Duration(minutes: 5)).timeAgo;  // "5m ago"
DateTime.now().subtract(const Duration(days: 3)).timeAgo;     // "3d ago"

// Copy with modified fields
DateTime(2024, 11, 25, 10, 30).copyWith(year: 2025, hour: 8);
// 2025-11-25 08:30:00

// Past / future checks
DateTime.now().subtract(const Duration(days: 1)).isInPast;   // true
DateTime.now().add(const Duration(days: 1)).isInFuture;      // true

// Week boundaries (Monday start)
DateTime(2024, 11, 27).startOfWeek;  // 2024-11-25 (Monday)
DateTime(2024, 11, 27).endOfWeek;    // 2024-12-01 23:59:59 (Sunday)

// Month / year boundaries
DateTime(2024, 2, 15).startOfMonth;  // 2024-02-01
DateTime(2024, 2, 15).endOfMonth;    // 2024-02-29 23:59:59
DateTime(2024, 6, 15).startOfYear;   // 2024-01-01
DateTime(2024, 6, 15).endOfYear;     // 2024-12-31 23:59:59

// Add / subtract weeks
DateTime(2024, 11, 25).addWeeks(2);       // 2024-12-09
DateTime(2024, 11, 25).subtractWeeks(1);  // 2024-11-18

// Same month / year checks
DateTime(2024, 11, 5).isSameMonth(DateTime(2024, 11, 25));  // true
DateTime(2024, 3, 1).isSameYear(DateTime(2024, 11, 1));     // true

// ISO-8601 week number
DateTime(2024, 1, 1).weekOfYear;  // 1

// "Today" / "Yesterday" / "Tomorrow" or a formatted date
DateTime.now().toRelativeDateLabel();  // "Today"

---

Time Extensions

// Formatted strings
DateTime.now().currentDateFormatted;  // "2024-11-25"
DateTime.now().currentTimeFormatted;  // "14:30"

// Time-of-day checks
DateTime.now().isMorning;    // true  (before 12 PM)
DateTime.now().isAfternoon;  // false (12 PM – 6 PM)
DateTime.now().isEvening;    // false (after 6 PM)

// Time Picker
final picked = await context.pickTime();
picked?.format(context);  // "11:08 PM"

---

Clock Extensions

// Live digital clock — call inside a Timer.periodic(Duration(seconds: 1), ...)
DateTime.now().toDigitalTimeWithSeconds();  // "11:42:32"
DateTime.now().toDigitalTime();             // "11:42"

---

Image Network Extensions

// With progress indicator
ImageNetworkExtensionsPro.networkImageWithProgress(
  url: 'https://picsum.photos/200',
  width: 100,
  height: 100,
  fit: BoxFit.cover,
);

// With rounded corners
ImageNetworkExtensionsPro.networkImageWithRoundedCorners(
  url: 'https://picsum.photos/200',
  width: 100,
  height: 100,
  borderRadius: 16.0,
);

// With placeholder widget
ImageNetworkExtensionsPro.networkImageWithPlaceholder(
  url: 'https://picsum.photos/200',
  width: 100,
  height: 100,
  placeholder: const Center(child: Text('Loading...')),
);

// Cached (uses cached_network_image)
ImageNetworkExtensionsPro.cachedNetworkImage(
  url: 'https://picsum.photos/200',
  width: 100,
  height: 100,
);

// With drop shadow
ImageNetworkExtensionsPro.networkImageWithShadow(
  url: 'https://picsum.photos/200',
  width: 100,
  height: 100,
  elevation: 10.0,
  shadowColor: Colors.black45,
);

---

Local Image Extensions

// With progress indicator and error handling
ImageLocalExtensionsPro.assetImageWithProgress(
  'assets/logo.png',
  context: context,
  width: 150,
  height: 150,
);

// With rounded corners
ImageLocalExtensionsPro.assetImageWithRoundedCorners(
  'assets/logo.png',
  context: context,
  width: 150,
  height: 150,
  borderRadius: 16.0,
);

// With shadow
ImageLocalExtensionsPro.assetImageWithShadow(
  'assets/logo.png',
  context: context,
  width: 150,
  height: 150,
  elevation: 8.0,
  shadowColor: Colors.blueAccent,
);

// Scaled with FittedBox
ImageLocalExtensionsPro.assetImageWithFittedBox(
  'assets/logo.png',
  width: 150,
  height: 150,
);

---

Validation Extensions

// Email
'user@example.com'.isValidEmail();    // true
'invalid-email'.isValidEmail();       // false

// Phone (E.164 format)
'+1234567890'.isValidPhoneNumber();   // true

// Password (min 8 chars, upper + lower + digit)
'Flutter@123'.isStrongPassword();     // true
'weak'.isStrongPassword();            // false

// Password match
'Pass123'.isPasswordMatch('Pass123'); // true
'Pass123'.isPasswordMatch('pass123'); // false

// OTP (exactly 6 digits)
'123456'.isValidOTP();  // true
'12345a'.isValidOTP();  // false

// Credit card (Luhn algorithm — handles spaces/dashes)
'4532015112830366'.isValidCreditCardNumber();    // true
'4532 0151 1283 0366'.isValidCreditCardNumber(); // true

// Hex color
'#FF5733'.isValidHexColor();  // true
'ZZZ'.isValidHexColor();      // false

// Digits only (no decimals or signs)
'123456'.isDigitsOnly();  // true
'12.34'.isDigitsOnly();   // false

// Alphanumeric
'Abc123'.isAlphaNumeric();   // true
'Abc@123'.isAlphaNumeric();  // false

// Geo coordinates
'37.7749'.isValidLatitude();    // true
'100.0'.isValidLatitude();      // false  (out of range)
'-122.4194'.isValidLongitude(); // true
'200.0'.isValidLongitude();     // false

// URL
'https://flutter.dev'.isValidUrl();  // true
'not a url'.isValidUrl();            // false

// Username (3-20 chars: letters, digits, underscore)
'flutter_dev1'.isValidUsername();  // true
'ab'.isValidUsername();            // false

// Indian PIN code (6 digits, first non-zero)
'411001'.isValidPinCode();  // true
'011001'.isValidPinCode();  // false

// IPv4 address
'192.168.1.1'.isValidIPAddress();  // true
'256.1.1.1'.isValidIPAddress();    // false

// Person's name (letters, spaces, apostrophes, hyphens)
"Mary-Jane O'Brien".isValidName();  // true
'John123'.isValidName();            // false

---

Navigation Extensions

// Push a new screen
context.push(const DetailScreen());

// Replace the current screen
context.pushReplacement(const HomeScreen());

// Pop back
context.pop();

// Pop with a result
context.pop('result');

// Clear the entire stack and push a new screen
context.pushAndRemoveUntil(const LoginScreen());

// Named routes
context.pushNamed('/details', arguments: {'id': 42});
context.popUntil('/home');
context.canPop;  // true if there's a route to pop

---

Widget Extensions

All extensions are chainable:

// Individual usage
Text('Hello').withPadding(const EdgeInsets.all(16));
Text('Hello').withMargin(const EdgeInsets.all(8));
Text('Hello').centered();
Text('Hello').withBorder(color: Colors.blue, width: 2.0);
Text('Hello').withShadow(blurRadius: 8.0, color: Colors.black26);
Text('Hello').withRoundedCorners(radius: 12.0);
Text('Hello').withVisibility(isLoggedIn);
Text('Hello').onTap(() => print('tapped'));
Text('Hello').onLongPress(() => print('long pressed'));
Text('Hello').withOpacity(0.5);
Text('Hello').withAspectRatio(16 / 9);
Text('Hello').withSafeArea();
Text('Hello').withBackgroundColor(Colors.amber);
Text('Hello').withHero('hello-tag');

// Chained
Text('Hello World')
  .withPadding(const EdgeInsets.all(16))
  .withBorder(color: Colors.blue, width: 2.0)
  .withShadow(blurRadius: 8.0)
  .withRoundedCorners(radius: 12.0);

---

String Extensions

'flutter'.capitalize();                    // "Flutter"
'flutter'.reverse();                       // "rettulf"
'snake_case_string'.toCamelCase();         // "SnakeCaseString"
'Flutter is awesome'.removeWhitespace();   // "Flutterisawesome"
'Flutter is amazing'.truncate(10);         // "Flutter is..."
'Order1234'.extractNumbers();              // "1234"
'madam'.isPalindrome();                    // true
'flutter'.isPalindrome();                  // false
'flutter is fun'.countOccurrences('u');    // 2
'123'.isNumeric();                         // true  (parses as double)
'abc'.isNumeric();                         // false

// Title case
'flutter is awesome'.toTitleCase();        // "Flutter Is Awesome"

// Mask sensitive data (keeps first/last N characters visible)
'1234567890123456'.mask();                         // "************3456"
'user@example.com'.mask(visibleStart: 2, visibleEnd: 0); // "us**************"

// Initials (great for avatar placeholders)
'John Doe'.toInitials();  // "JD"

// URL-friendly slug
'Hello, Flutter World!'.toSlug();  // "hello-flutter-world"

// Case-insensitive comparison
'Flutter'.equalsIgnoreCase('flutter');  // true

// Base64 encode / decode
'Flutter'.toBase64();          // "Rmx1dHRlcg=="
'Rmx1dHRlcg=='.fromBase64();   // "Flutter"

// Word count
'Flutter is awesome'.wordCount();  // 3

// Strip everything except letters, digits, and spaces
'Hello, World! #2024'.removeSpecialCharacters();  // "Hello World 2024"

// Pluralize based on count
'item'.pluralize(1);                    // "item"
'item'.pluralize(5);                    // "items"
'box'.pluralize(2, plural: 'boxes');    // "boxes"

---

Int Extensions

// Duration string
125.toDurationString;   // "2m 5s"

// Roman numerals (1–3999)
1990.toRoman;           // "MCMXC"
4.toRoman;              // "IV"

// Ordinal
1.toOrdinal();          // "1st"
22.toOrdinal();         // "22nd"
103.toOrdinal();        // "103rd"
11.toOrdinal();         // "11th"

// File size
1024.toFileSize();      // "1.00 KB"
1048576.toFileSize();   // "1.00 MB"
512.toFileSize();       // "512 B"

// Short format
12340.toShortString();    // "12.3K"
1200000.toShortString();  // "1.2M"

// Number to words (Indian system)
1234.toWords();           // "one thousand two hundred thirty four"
100000.toWords();         // "one lakh"
10000000.toWords();       // "one crore"

// Weekday name (1 = Monday, 7 = Sunday)
3.toWeekDay();                 // "Wednesday"
3.toWeekDay(isHalfName: true); // "Wed"

// Prime check
17.isPrime;  // true
4.isPrime;   // false

// Currency formatting (powered by intl)
1234567.toCurrencyString();               // "₹1,234,567"
1000.toCurrencyString(symbol: '\$');      // "$1,000"

// Percentage
45.toPercentageString();  // "45%"

// Treat as seconds and format as a clock string
125.secondsToTimeString();  // "02:05"

---

SnackBar Extensions

// Success (green)
context.showSuccessSnackBar('Saved successfully!');

// Error (red)
context.showErrorSnackBar('Something went wrong!');

// Custom color and duration
context.showCustomSnackBar(
  message: 'Custom message',
  backgroundColor: Colors.indigo,
  duration: const Duration(seconds: 4),
  action: SnackBarAction(label: 'UNDO', onPressed: () {}),
);

// With icon
context.showIconSnackBar(
  message: 'Data saved!',
  icon: Icons.check_circle,
  backgroundColor: Colors.green,
);

// Gradient (purple → blue)
context.showGradientSnackBar('Beautiful gradient!');

// Persistent (stays until dismissed)
context.showPersistentSnackBar(
  message: 'Tap DISMISS to close.',
  dismissColor: Colors.white,
);

---

List Extensions

final numbers = [1, 2, 3, 4, 5, 6, 6, 7, 8, 9];

numbers.firstOrDefault();         // 1
numbers.lastOrDefault();          // 9

numbers.addIfNotExists(10);       // adds 10 only if not present
numbers.removeDuplicates();       // [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

numbers.safeSublist(2, 5);        // [3, 4, 5]  — no RangeError
numbers.find((x) => x > 5);      // 6

// Sort by property
final names = ['Zara', 'Anna', 'Mike'];
names.sortBy((n) => n);                        // ['Anna', 'Mike', 'Zara']
names.sortBy((n) => n, descending: true);      // ['Zara', 'Mike', 'Anna']

// Convert to map
numbers.toMap((x) => x.toString());
// {'1': 1, '2': 2, '3': 3, ...}

// Indexed iteration
numbers.forEachIndexed((index, item) {
  print('[$index] $item');
});

// Split into chunks
numbers.chunked(3);
// [[1, 2, 3], [4, 5, 6], [7, 8, 9], [10]]

// Deduplicate by a derived key, keeping the first match
['apple', 'apricot', 'banana', 'blueberry'].distinctBy((s) => s[0]);
// ['apple', 'banana']

// Numeric aggregates
final scores = [1, 2, 3, 4, 5];
scores.sumPro;      // 15
scores.averagePro;  // 3.0
scores.maxPro;      // 5
scores.minPro;      // 1

// Random element
numbers.randomElement();  // a random item, or null if the list is empty

// Swap two elements in place
final letters = ['a', 'b', 'c'];
letters.swap(0, 2);  // ['c', 'b', 'a']

// Group elements by a derived key
['apple', 'apricot', 'banana'].groupBy((w) => w[0]);
// {'a': ['apple', 'apricot'], 'b': ['banana']}

// Rotate the list
[1, 2, 3, 4, 5].rotate(2);   // [4, 5, 1, 2, 3]
[1, 2, 3, 4, 5].rotate(-1);  // [2, 3, 4, 5, 1]

// Flatten a list of lists
[[1, 2], [3], [4, 5]].flatten();  // [1, 2, 3, 4, 5]

// Remove null elements
<int?>[1, null, 2, null, 3].whereNotNull();  // [1, 2, 3]

---

Distance Calculator

Uses the Haversine formula for accurate great-circle distance.

final distance = 0.calculateDistance(
  startLatitude: 28.7041,   // Delhi
  startLongitude: 77.1025,
  endLatitude: 19.0760,     // Mumbai
  endLongitude: 72.8777,
);

print('${distance.toStringAsFixed(2)} km');  // 1158.91 km

---

Unit Conversion Extensions

All conversions are extension getters/methods on num (works with int and double).

// ── Length ────────────────────────────────────
5000.toKilometersPro;             // m → km
5000.toMilesPro;                  // m → mi
5000.toMetersFromFeetPro;         // ft → m
5000.toCentimetersFromInchesPro;  // in → cm
5000.toInchesFromCentimetersPro;  // cm → in

// ── Temperature ───────────────────────────────
25.toFahrenheitPro;  // °C → °F  → 77.0
77.toCelsiusPro;     // °F → °C  → 25.0

// ── Area ──────────────────────────────────────
10000.toAcresPro;          // m² → acres
10000.toSquareMetersPro;   // ft² → m²

// ── Weight ────────────────────────────────────
70.toPoundsPro;      // kg → lb
154.toKilogramsPro;  // lb → kg
28.toGramsPro;       // oz → g
100.toOuncesPro;     // g  → oz

// ── Speed ─────────────────────────────────────
100.toMilesPerHourPro;       // km/h → mph
62.toKilometersPerHourPro;   // mph  → km/h

// ── Time ──────────────────────────────────────
3600.toMinutesPro;  // s  → min  → 60.0
3600.toHoursPro;    // s  → hr   → 1.0
24.toDaysPro;       // hr → days → 1.0

// ── Volume ────────────────────────────────────
100.toGallonsPro;                    // L  → gal
10.toLitersPro;                      // gal → L
1.toCubicFeetPro;                    // m³ → ft³
35.toCubicMetersFromCubicFeetPro;    // ft³ → m³

// ── Digital Storage ───────────────────────────
2048.toGBPro;         // MB → GB
2.toMBPro;            // GB → MB
500.toKilobytesPro;   // MB → KB
512.toMegabytesPro;   // KB → MB

// ── Energy ────────────────────────────────────
1000.toCaloriesPro;  // J   → cal
239.toJoulesPro;     // cal → J

// ── Pressure ──────────────────────────────────
101325.toBarPro;    // Pa  → bar
1.toPascalPro;      // atm → Pa

// ── Angle ─────────────────────────────────────
90.toRadiansPro;     // deg → rad  → 1.5708
1.5708.toDegreesPro; // rad → deg  → 90.0

// ── Currency (indicative rates) ───────────────
100.toEURPro;  // USD → EUR
92.toUSDPro;   // EUR → USD

// ── Electricity ───────────────────────────────
1.5.toMillivoltsPro;          // V  → mV
1500.toVoltsFromMillivoltsPro; // mV → V

// ── Fuel Efficiency ───────────────────────────
25.toLPer100kmPro;  // MPG  → L/100km
9.41.toMPGPro;      // L/100km → MPG

// ── Power ─────────────────────────────────────
500.toKilowattsPro;   // W  → kW
0.5.toWattsPro;       // kW → W

// ── Data Rate ─────────────────────────────────
10.toKbpsPro;    // Mbps → Kbps
10000.toMbpsPro; // Kbps → Mbps

// ── Power Consumption ─────────────────────────
1000.toKilowattHoursPro;  // Wh → kWh
1.toWattHoursPro;         // kWh → Wh

---

Status Bar Extensions

// Set color and icon brightness
context.setStatusBarColor(Colors.blue, darkIcons: false);

// Hide the status bar completely
context.hideStatusBar();

// Restore the status bar
context.showStatusBar();

// Set brightness
context.setStatusBarBrightness(Brightness.dark);

// Set icon color only
context.setStatusBarTextColor(true);   // dark icons
context.setStatusBarTextColor(false);  // light icons

---

Screen & Theme Extensions

// Screen dimensions
context.screenSize;    // Size(360.0, 800.0)
context.screenWidth;   // 360.0
context.screenHeight;  // 800.0

// Theme shortcuts
context.theme;         // Theme.of(context)
context.textTheme;     // Theme.of(context).textTheme
context.isDarkMode;    // true if the current theme brightness is dark

// Dismiss the keyboard from anywhere
context.unfocus();

// Orientation and device class
context.orientation;   // Orientation.portrait
context.isTablet;      // true if the shortest side is >= 600dp

// Safe area (notches, status/navigation bars)
context.safeAreaPadding;  // EdgeInsets(...)

// Keyboard visibility
context.keyboardHeight;     // height in logical pixels, 0 when hidden
context.isKeyboardVisible;  // true when the keyboard is open

---

Dialog Extensions

// Show a non-dismissible loading spinner, then close it later
context.showLoadingDialog();
await doSomeWork();
context.hideLoadingDialog();

// Yes/No confirmation dialog
final confirmed = await context.showConfirmDialog(
  title: 'Delete item?',
  message: 'This action cannot be undone.',
  confirmText: 'Delete',
  cancelText: 'Cancel',
);
if (confirmed) {
  // proceed with deletion
}

---

Color Extensions

// Color to hex string
const Color(0xFF336699).toHex();                        // "#336699"
const Color(0xFF336699).toHex(includeAlpha: true);       // "#ff336699"
const Color(0xFF336699).toHex(leadingHash: false);       // "336699"

// Hex string to Color
'#336699'.toColor();  // Color(0xff336699)
'369'.toColor();      // Color(0xff336699)  — shorthand hex

// Lighten / darken
const Color(0xFF336699).lighten(0.2);
const Color(0xFF336699).darken(0.2);

// Perceived brightness
Colors.white.isLight;  // true
Colors.black.isDark;   // true

// Blend two colors
Colors.black.blend(Colors.white, 0.5);  // a 50/50 mix

// Build a MaterialColor swatch (50–900) from any Color
const Color(0xFF336699).toMaterialColor();

---

Duration Extensions

// Formats as mm:ss, or HH:mm:ss once it reaches an hour
const Duration(seconds: 125).toFormattedString();               // "02:05"
const Duration(hours: 1, minutes: 2, seconds: 3).toFormattedString(); // "01:02:03"

// Human-readable duration
const Duration(days: 1, hours: 2, minutes: 3).toHumanReadable();  // "1d 2h 3m"
Duration.zero.toHumanReadable();  // "0s"

// Zero check
Duration.zero.isZero;  // true

---

Map Extensions

final map = {'a': 1, 'b': 2, 'c': 3};

// Filter by key or value
map.filterKeys((k) => k != 'b');   // {'a': 1, 'c': 3}
map.filterValues((v) => v > 1);    // {'b': 2, 'c': 3}

// Build a URL query string
{'q': 'flutter dev', 'page': 2}.toQueryString();  // "q=flutter+dev&page=2"

// Map<K, V>?
Map<String, int>? config;
config.isNullOrEmpty;  // true

---

Toast Extensions

// Shows a lightweight overlay toast — no Scaffold required
context.showToast('Saved!');
context.showToast(
  'Something went wrong',
  duration: const Duration(seconds: 3),
  backgroundColor: Colors.red,
);

---

Clipboard Extensions

// Copy any string to the system clipboard
await 'Referral code: FLUTTER25'.copyToClipboard();

---

Highlight Extensions

// Highlight every case-insensitive occurrence of a search term
RichText(
  text: TextSpan(
    children: 'Hello World Hello'.highlightOccurrences(
      'hello',
      baseStyle: const TextStyle(color: Colors.black),
      highlightStyle: const TextStyle(
        color: Colors.black,
        fontWeight: FontWeight.bold,
        backgroundColor: Colors.yellow,
      ),
    ),
  ),
);

---

Nullable Safety Extensions

// String?
String? name;
name.isNullOrEmpty;         // true
name.isNullOrBlank;         // true
name.orDefault('Guest');    // "Guest"

// List<T>?
List<int>? items;
items.isNullOrEmpty;        // true

// Map<K, V>?
Map<String, int>? settings;
settings.isNullOrEmpty;     // true

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Contributing

Contributions, issues, and feature requests are welcome!

1. Fork the repository.
2. Create a branch for your change (git checkout -b feature/my-feature).
3. Make your changes and add/update tests where relevant.
4. Run flutter analyze and flutter test to make sure everything passes.
5. Open a pull request describing what you changed and why.

Found a bug or have an idea? Open an issue.

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Author

Sanjay Sharma — Full-Stack & Cross-Platform Mobile Developer
Android · iOS · Swift · Flutter · Dart · Node.js

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License

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Support

If Extensions Pro saved you time, consider buying me a coffee — it keeps the extensions coming! ☕