DEV Community: Eldho Paulose

Hören Sie auf, Bilder einzeln zu bearbeiten — Dieses kostenlose Browser-Tool verarbeitet Hunderte auf einmal

Eldho Paulose — Sat, 16 May 2026 07:16:11 +0000

Wir kennen das alle.

Sie haben 200 Produktbilder, die auf 800×800 skaliert, in WebP konvertiert und mit einem passenden Präfix umbenannt werden müssen — und das vor einem Montags-Deadline. Sie öffnen Photoshop, bearbeiten ein Bild, merken, dass Sie eine Aktion aufzeichnen müssen, verpatzen das Batch-Skript, und zwei Stunden später sind Sie immer noch bei Bild 12.

Es gibt einen besseren Weg. Und er kostet nichts.

Das Resizo Batch Image Toolkit

Resizos Batch Image Toolkit ist eine Sammlung von fünf kostenlosen, spezialisierten Tools, die Hunderte von Bildern auf einmal verarbeiten — vollständig in Ihrem Browser mithilfe der HTML5 Canvas API.

🔒 Bilder verlassen Ihr Gerät niemals. Kein Server-Upload, kein Konto, kein Datenschutz-Kompromiss. Funktioniert offline, sobald die Seite geladen ist.

Die 5 Tools (+ 1 Power-Modus)

📐 Batch-Größenänderung

Ändern Sie die Größe vieler Bilder auf beliebige Breite × Höhe mit drei intelligenten Modi:

Smart — Größe ändern unter Beibehaltung des Seitenverhältnisses
Fit — In die Zieldimensionen einfügen mit Auffüllung
Stretch — Exakte Abmessungen erzwingen

Perfekt für E-Commerce-Thumbnails, Social-Media-Assets oder jeden Workflow, der einheitliche Pixelmaße über einen großen Datensatz hinweg benötigt.

🔏 Batch-Wasserzeichen

Fügen Sie jedem Bild auf einmal ein Text- oder Logo-Wasserzeichen hinzu. Sie kontrollieren:

Position — 9-Punkt-Anker-Auswahl (oben links, Mitte, unten rechts usw.)
Farbe & Deckkraft — damit Ihr Branding sichtbar bleibt, ohne das Bild zu ruinieren
Text oder Bild — laden Sie Ihr Logo hoch oder tippen Sie einfach Ihren Markennamen ein

Ideal für Fotografen, die ihr Portfolio schützen, oder Marken, die ihre Marketing-Assets absichern möchten.

✏️ Batch-Umbenennung

Massenumbenennung mit benutzerdefiniertem Präfix + fortlaufender Nummerierung — kein Qualitätsverlust, da kein Pixel berührt wird.

Wandeln Sie IMG_4823.jpg, IMG_4824.jpg… in Sekunden in produkt-001.jpg, produkt-002.jpg… um.

🔄 Batch-Konvertierung

Konvertieren Sie zwischen JPG, PNG und WebP mit voller Qualitätskontrolle. Das ist das Tool, das Sie brauchen, wenn:

Sie zu WebP migrieren möchten für bessere Core Web Vitals
Ein Kunde PNGs sendet, aber Ihr CMS nur JPGs akzeptiert
Sie die Transparenz für einen weißen Hintergrund-Export entfernen müssen

✂️ Batch-Zuschnitt

Schneiden Sie jedes Bild auf ein festes Seitenverhältnis zu — 1:1, 16:9, 9:16, 4:3 und mehr — mit Ankerkontrolle, sodass Sie entscheiden, ob der Zuschnitt oben, in der Mitte oder unten auf jedem Bild zentriert wird.

Ideal für Instagram-Grids, YouTube-Thumbnails oder jede Plattform mit strengen Verhältnisanforderungen.

🧰 All-in-One-Prozessor

Die Power-User-Funktion befindet sich direkt auf der Haupt-Toolkit-Seite. Kombinieren Sie Größenänderung + Konvertierung + Umbenennung in einem einzigen Durchgang:

Zieldimensionen festlegen
Ausgabeformat (JPG / PNG / WebP) und Qualität wählen
Dateinamenpräfix hinzufügen
Bilder ablegen → Verarbeiten → ZIP herunterladen

Kein Grund, drei separate Tools auszuführen, wenn ein Durchgang alles erledigen kann.

Warum Browser-only wirklich wichtig ist

Die meisten „kostenlosen" Bildtools sind kostenlos, bis Sie ein Limit erreichen — dann wollen sie Ihre E-Mail, ein Abonnement oder die Erlaubnis, Ihre Dateien auf ihren Servern zu speichern.

Resizo funktioniert anders:

Funktion	Resizo	Typische „kostenlose" Tools
Dateien auf Server hochgeladen	❌ Niemals	✅ Immer
Konto erforderlich	❌ Nein	✅ Meistens
Dateigrößenlimit	20 MB pro Datei	Oft niedriger
Batch-Größe	Hunderte auf einmal	Oft begrenzt
Kosten	Kostenlos für immer	Freemium

Das 20-MB-Limit pro Datei deckt die große Mehrheit der realen Anwendungsfälle ab — abgesehen von RAW-Fotos sind die meisten JPG/PNG/WebP-Dateien deutlich darunter.

Praxisnahe Anwendungsfälle

👨‍💻 Webentwickler — Konvertieren Sie einen Ordner mit PNGs eines Kunden in WebP, bevor Sie in die Produktion pushen. Ändern Sie die Größe auf maximal 1200px Breite. In einem Durchgang erledigt.

📸 Fotograf — Versehen Sie 300 Eventfotos mit Ihrem Studio-Logo unten rechts. Exportieren Sie als hochwertige JPGs. Ein ZIP-Download.

🛍️ E-Commerce-Manager — Benennen Sie 150 Produktbilder mit einem passenden SKU-Präfix um, schneiden Sie sie alle auf 1:1 zu und skalieren Sie auf 800×800 für die Produktlistenseite.

📱 Social-Media-Manager — Querformataufnahmen auf 9:16 für Stories zuschneiden, auf Plattformspezifikationen skalieren, in JPG konvertieren. Alles vor dem Morgenpost.

Schnelllinks — Alle Tools

Tool	Was es tut	Link
Batch-Größenänderung	Auf beliebige Dimension skalieren	Öffnen →
Batch-Wasserzeichen	Text- oder Logo-Wasserzeichen	Öffnen →
Batch-Umbenennung	Präfix + fortlaufende Nummerierung	Öffnen →
Batch-Konvertierung	JPG ↔ PNG ↔ WebP	Öffnen →
Batch-Zuschnitt	Festes Seitenverhältnis zuschneiden	Öffnen →
All-in-One	Größenänderung + Konvertierung + Umbenennung	Öffnen →

Das Fazit

Wenn Sie regelmäßig Bilder für das Web verarbeiten — ob als Entwickler, Designer, Fotograf oder Content Creator — ist Resizos Batch Image Toolkit einen Lesezeichen wert. Es erledigt die mühsame Massenarbeit sofort, hält Ihre Dateien privat und kostet nichts.

Keine Photoshop-Aktionsskripte. Keine ImageMagick-Kommandozeilen-Akrobatik. Einfach Bilder ablegen und die ZIP herunterladen.

Haben Sie schon browserbasierte Batch-Bildtools ausprobiert? Teilen Sie Ihren Workflow in den Kommentaren — ich bin immer neugierig, wie andere Entwickler diese Art von Asset-Vorbereitung handhaben.

Kostenloser Online-Bildgrößenänderer (Kein Upload erforderlich) — JPG, PNG & WebP sofort anpassen

Eldho Paulose — Sat, 16 May 2026 07:12:43 +0000

Suchen Sie einen kostenlosen Online-Bildgrößenänderer, der sofort im Browser funktioniert?
Ändern Sie die Größe von JPG-, PNG- und WebP-Bildern, ohne Dateien hochzuladen oder Qualität zu verlieren.
Viele Online-Bildtools erfordern das Hochladen von Bildern auf einen Server, eine Registrierung oder Wartezeiten bei der Verarbeitung. Das kann Ihren Workflow verlangsamen und Datenschutzbedenken aufwerfen.
Deshalb habe ich Resizo entwickelt — ein einfaches browserbasiertes Bildtool, das Bilder direkt auf Ihrem Gerät skaliert und konvertiert.
👉 Jetzt ausprobieren
https://www.resizo.in/

Warum die Bildgröße wichtig ist

Zu große Bilder können:

Websites verlangsamen
Die Ladezeit von Seiten erhöhen
Die SEO-Performance beeinträchtigen
Unnötigen Speicherplatz verbrauchen

Für Entwickler, Blogger und Designer ist die Größenanpassung von Bildern eine häufige Aufgabe.
Herkömmliche Tools erfordern jedoch oft:

Das Hochladen von Bildern auf einen Server
Die Erstellung eines Kontos
Wartezeiten bei der Verarbeitung
Die Akzeptanz verringerter Bildqualität

Ein browserbasiertes Tool beseitigt all diese Probleme.

Was Resizo besonders macht

Resizo verarbeitet Bilder direkt in Ihrem Browser, das bedeutet:

Kein Upload erforderlich
Kein Konto notwendig
Schnellere Verarbeitung
Besserer Datenschutz
Sofortige Ergebnisse

Ihr Bild verlässt niemals Ihr Gerät.

Hauptfunktionen

Sofortige Bildgrößenanpassung

Ändern Sie die Bildgröße direkt in Ihrem Browser.
Unterstützte Formate:

JPG
PNG
WebP

Datenschutzorientiert

Da alles lokal in Ihrem Browser ausgeführt wird, bleiben Ihre Dateien privat.

Einfache Benutzeroberfläche

Das Tool ist übersichtlich und benutzerfreundlich gestaltet — ohne unnötige Zwischenschritte.

Verfügbare Bildtools

Resizo bietet außerdem mehrere Tools zur Bildoptimierung.

Bildgröße für soziale Medien anpassen

Instagram-Bildgrößenänderer https://www.resizo.in/resize-image-for-instagram/
YouTube-Bildgrößenänderer https://www.resizo.in/resize-image-for-youtube/
Facebook-Bildgrößenänderer https://www.resizo.in/resize-image-for-facebook/
Twitter-Bildgrößenänderer https://www.resizo.in/resize-image-for-twitter/
LinkedIn-Bildgrößenänderer https://www.resizo.in/resize-image-for-linkedin/
WhatsApp-Bildgrößenänderer https://www.resizo.in/resize-image-for-whatsapp/

Bildoptimierungstools

PNG-Kompressor https://www.resizo.in/compress-png-online/
JPG-zu-WebP-Konverter https://www.resizo.in/jpg-to-webp-converter/

Wer kann dieses Tool verwenden?

Resizo ist nützlich für:

Entwickler

Schnelles Anpassen von UI-Bildern, Thumbnails oder Assets.

Blogger

Optimierung von Blog-Bildern für schnellere Ladezeiten.

E-Commerce-Verkäufer

Produktbilder für Marktplätze und Online-Shops vorbereiten.

Social-Media-Ersteller

Bilder an die Anforderungen verschiedener Plattformen anpassen.

Warum browserbasierte Tools besser sind

Herkömmliche Bildtools laden Ihre Bilder auf einen Remote-Server hoch. Das kann folgende Probleme verursachen:

Datenschutzrisiken
Langsamere Leistung
Dateigrößenbeschränkungen

Mit browserbasierten Verarbeitung bleiben Bilder auf Ihrem Gerät und werden sofort verarbeitet.

Tool ausprobieren

Wenn Sie nach einer schnellen und datenschutzfreundlichen Möglichkeit suchen, Bilder zu skalieren, schauen Sie hier vorbei:
👉 https://www.resizo.in/

Abschließende Gedanken

Bildoptimierung ist unverzichtbar für Websites, soziale Medien und digitale Inhalte.
Ein browserbasierter Bildgrößenänderer macht den Prozess schneller, sicherer und einfacher — ohne Qualitätsverluste.
Wenn Sie regelmäßig mit Bildern arbeiten, können Tools wie Resizo Ihren Workflow erheblich vereinfachen.

Stop Wasting Time Editing Images One by One — This Free Browser Tool Does Hundreds at Once

Eldho Paulose — Fri, 15 May 2026 14:08:27 +0000

We've all been there.

You have 200 product images that need to be resized to 800×800, converted to WebP, and renamed with a proper prefix — before a Monday deadline. You open Photoshop, process one image, realize you need to record an action, mess up the batch script, and two hours later you're still on image 12.

There's a better way. And it costs nothing.

Meet the Resizo Batch Image Toolkit

Resizo's Batch Image Toolkit is a collection of five free, focused tools that process hundreds of images at once — entirely inside your browser using the HTML5 Canvas API.

🔒 Images never leave your device. No server upload, no account, no privacy trade-off. Works offline once the page loads.

The 5 Tools (+ 1 Power Mode)

📐 Batch Resize

Resize many images to any width × height with three smart modes:

Smart — resize while preserving aspect ratio
Fit — fit inside the target dimensions with padding
Stretch — force exact dimensions

Perfect for e-commerce thumbnails, social media assets, or any workflow that needs consistent pixel dimensions across a large set.

🔏 Batch Watermark

Add text or a logo watermark to every image in one go. You control:

Position — 9-point anchor picker (top-left, center, bottom-right, etc.)
Color & opacity — so your branding stays visible without killing the image
Text or image — upload your logo or just type your brand name

Great for photographers protecting their portfolio or brands protecting marketing assets.

✏️ Batch Rename

Mass rename with a custom prefix + sequential numbering — zero quality loss since no pixel is touched.

Turn IMG_4823.jpg, IMG_4824.jpg… into product-001.jpg, product-002.jpg… in seconds.

🔄 Batch Convert

Convert between JPG, PNG, and WebP with full quality control. This is the one you want when:

You're migrating to WebP for better Core Web Vitals
A client sends PNGs but your CMS only accepts JPGs
You need to strip transparency for a white-background export

✂️ Batch Crop

Crop every image to a fixed aspect ratio — 1:1, 16:9, 9:16, 4:3, and more — with anchor control so you decide whether the crop centers on the top, middle, or bottom of each image.

Ideal for Instagram grids, YouTube thumbnails, or any platform with strict ratio requirements.

🧰 All-in-One Processor

The power-user feature lives right on the main toolkit page. Combine resize + convert + rename in a single pass:

Set your target dimensions
Choose the output format (JPG / PNG / WebP) and quality
Add a filename prefix
Drop your images → Process → Download ZIP

No need to run three separate tools when one pass can do it all.

Why Browser-Only Actually Matters

Most "free" image tools are free until you hit a limit — then they want your email, a subscription, or permission to store your files on their servers.

Resizo works differently:

Feature	Resizo	Typical "Free" Tools
Files uploaded to server	❌ Never	✅ Always
Account required	❌ No	✅ Usually
File size limit	20 MB per file	Often lower
Batch size	Hundreds at once	Often capped
Cost	Free forever	Freemium

The 20 MB per-file limit covers the vast majority of real-world use cases — RAW photos aside, most JPG/PNG/WebP files are well under that.

Real-World Use Cases

👨‍💻 Web developer — Convert a client's folder of PNGs to WebP before pushing to production. Batch Resize them to max 1200px width. Done in one pass.

📸 Photographer — Watermark 300 event photos with your studio logo at the bottom-right. Export as high-quality JPGs. One ZIP download.

🛍️ E-commerce manager — Rename 150 product images with a proper SKU prefix, crop them all to 1:1, and resize to 800×800 for the product listing page.

📱 Social media manager — Crop landscape shots to 9:16 for Stories, resize to platform specs, convert to JPG. All before the morning post.

Quick Links — All Tools

Tool	What it does	Link
Batch Resize	Resize to any dimension	Open →
Batch Watermark	Text or logo watermark	Open →
Batch Rename	Prefix + sequence numbering	Open →
Batch Convert	JPG ↔ PNG ↔ WebP	Open →
Batch Crop	Fixed aspect ratio cropping	Open →
All-in-One	Resize + Convert + Rename	Open →

The Bottom Line

If you regularly process images for the web — whether you're a developer, designer, photographer, or content creator — Resizo's Batch Image Toolkit is worth bookmarking. It handles the tedious bulk work instantly, keeps your files private, and costs nothing.

No Photoshop action scripts. No command-line ImageMagick gymnastics. Just drop your images and download the ZIP.

Have you tried any browser-based batch image tools? Drop your workflow in the comments — always curious how other devs handle this kind of asset prep.

RoutePilot — Flutter routing without the boilerplate

Eldho Paulose — Mon, 23 Mar 2026 06:47:59 +0000

Flutter's built-in navigation works fine for small apps. But the moment you need auth guards, deep links, typed arguments, and the ability to show a dialog without a BuildContext — you're either drowning in boilerplate or relying on a package that generates 500 lines of code every time you add a route.

I wanted something in between: a clean, composable API that covers 95% of real-world routing needs, ships as a single package, and stays out of the way.

That's RoutePilot — one singleton (routePilot) that handles push/pop, middleware, overlays, URL launching, and more.

✨ What's inside

Category	Capabilities
Navigation	Push, pop, replace, clear stack, pop-until by name or predicate
Transitions	9 built-in transitions with custom curves and durations
Deep Linking	Navigator 2.0 Router API with automatic browser URL sync
Middleware	Async guards with `FutureOr<String?>` redirect — auth, loading states
Typed Routes	`PilotRoute<TArgs, TReturn>` for compile-safe navigation
Route Groups	Shared prefix, middleware, and transition across related routes
Overlays	Dialogs, bottom sheets, snackbars, loading overlays — no `BuildContext`
URL Launcher	Browser, in-app WebView, phone calls, SMS, email
Observer	Built-in route stack tracking with `currentRoute` and `previousRoute`

🚀 Get started in 3 minutes

1. Install

# pubspec.yaml
dependencies:
  route_pilot: ^0.2.0

flutter pub get

2. Define your routes

abstract class PilotRoutes {
  static const String home    = '/';
  static const String profile = '/profile';
  static const String user    = '/user/:id';
}

final pages = [
  PilotPage(
    name: PilotRoutes.home,
    page: (ctx) => const HomePage(),
    transition: Transition.ios,
  ),
  PilotPage(
    name: PilotRoutes.profile,
    page: (ctx) => const ProfilePage(),
    transition: Transition.fadeIn,
    middlewares: [AuthGuard()], // 👈 guard this route
  ),
];

3. Wire up your app

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp.router(
      routerConfig: routePilot.getRouterConfig(
        pages: pages,
        initialRoute: PilotRoutes.home,
        notFoundPage: PilotPage(
          name: '/404',
          page: (ctx) => const NotFoundPage(),
        ),
      ),
    );
  }
}

That's it — deep linking, browser URL sync, and the full navigation API are ready.

🗺️ Navigation API

// Push / pop
routePilot.toNamed('/profile');
routePilot.back();

// Pass arguments
routePilot.toNamed('/profile', arguments: {'userId': 42});
final id = routePilot.arg<int>('userId');

// Replace or clear the stack
routePilot.off('/home');    // replace current route
routePilot.offAll('/home'); // clear stack + push

// Path + query params → /user/42?tab=settings
routePilot.toNamed('/user/42?tab=settings');
final uid = routePilot.param('id');   // '42'
final tab = routePilot.param('tab'); // 'settings'

// Navigate directly to a widget (no route name needed)
routePilot.to(
  const DetailsPage(),
  transition: Transition.bottomToTop,
  transitionDuration: const Duration(milliseconds: 400),
  curve: Curves.easeInOut,
);

🎞️ All 9 transitions, zero config

Transition	Effect
`Transition.ios`	Native Cupertino swipe-back
`Transition.fadeIn`	Cross-fade
`Transition.rightToLeft`	Standard push slide
`Transition.leftToRight`	Slide from left
`Transition.bottomToTop`	Sheet-style rise
`Transition.topToBottom`	Drop-down
`Transition.scale`	Scale up from center
`Transition.rotate`	Rotation
`Transition.size`	Size expansion

Every transition accepts a custom curve and transitionDuration.

🔒 Async middleware — the right way to handle auth

Middleware runs before a route renders. Return a redirect path to block navigation, or null to allow it.

class AuthGuard extends PilotMiddleware {
  @override
  FutureOr<String?> redirect(String? route) async {
    final isLoggedIn = await checkAuthToken();
    if (!isLoggedIn) return '/login'; // redirect
    return null; // allow
  }
}

// Show a spinner while the guard resolves
routePilot.middlewareLoadingWidget =
    const Center(child: CircularProgressIndicator());

Middleware can be attached to individual PilotPages or shared across a PilotRouteGroup. Nested groups cascade automatically.

📦 Route groups — keep things organized

PilotRouteGroup(
  prefix: '/dashboard',
  middlewares: [AuthGuard()],
  transition: Transition.fadeIn,
  children: [
    PilotPage(name: '/home',     page: (ctx) => DashboardHome()),
    PilotPage(name: '/settings', page: (ctx) => SettingsPage()),
    // resolves to: /dashboard/home, /dashboard/settings
  ],
)

💬 Overlays without BuildContext

Show any overlay from a ViewModel, a service class, or anywhere else in your app — no context threading required.

// Dialog with a typed return value
final confirmed = await routePilot.dialog(AlertDialog(
  title: const Text('Delete item?'),
  actions: [
    TextButton(onPressed: () => routePilot.back(false), child: const Text('Cancel')),
    TextButton(onPressed: () => routePilot.back(true),  child: const Text('Delete')),
  ],
));

// SnackBar — queue-safe, clears any previous snackbar automatically
routePilot.snackBar('Saved!', backgroundColor: Colors.green);

// Non-dismissible full-screen loading overlay
routePilot.showLoading();
await uploadFile();
routePilot.hideLoading();

// Bottom sheet
routePilot.bottomSheet(
  const MyBottomSheetWidget(),
  isScrollControlled: true,
);

🧩 Typed routes — compile-time safety

// Define once
final userRoute = PilotRoute<PersonData, bool>('/user/:id');

// Push with type-safe args + auto path/query substitution
final result = await userRoute.push(
  arguments:   PersonData(id: 42, title: 'Eldho'),
  pathParams:  {'id': '42'},
  queryParams: {'tab': 'settings'},
);
// Navigates to: /user/42?tab=settings
// result is bool? — fully typed return value

🔗 URL Launcher & System Intents

// Open in browser / in-app browser / WebView
await routePilot.launchInBrowser(Uri.parse('https://flutter.dev'));
await routePilot.launchInAppBrowser(Uri.parse('https://dart.dev'));
await routePilot.launchInAppWebView(Uri.parse('https://pub.dev'));

// Phone, SMS, Email
await routePilot.makePhoneCall('+1-234-567-8900');
await routePilot.sendSms('+1-234-567-8900', body: 'Hello!');
await routePilot.sendEmail('hello@example.com', subject: 'Hi', body: 'From RoutePilot!');

🧭 Route observer

// Access current and previous route names from anywhere
final current  = routePilot.currentRoute;  // e.g. '/profile'
final previous = routePilot.previousRoute; // e.g. '/'

// Full route stack
final stack = routePilot.observer.routeStack;

Why not GetX or GoRouter?

GetX bundles state management, dependency injection, and routing together. If you only want routing, you're carrying a lot of extra weight.

GoRouter is the official recommendation, but middleware (redirects) requires working around the redirect callback in ways that don't handle async loading states well out of the box.

AutoRoute requires code generation — every time you add a route, you run the build runner.

RoutePilot is focused on routing only. Bring your own state manager. Zero code generation. Middleware is first-class, not a workaround.

By the numbers

9 built-in transitions
0 code generation steps
2 dependencies: flutter + url_launcher
MIT licensed

Try it

dependencies:
  route_pilot: ^0.2.0

The package ships with a full example app demonstrating:

Navigator 2.0 with deep linking
Typed routes and typed arguments
Auth guard middleware with redirect
Route groups with shared prefix
Every overlay type

Free Online Image Resizer (No Upload Required) — Resize JPG, PNG & WebP Instantly

Eldho Paulose — Sun, 01 Mar 2026 19:16:15 +0000

Looking for a free online image resizer that works instantly in your browser?

Resize JPG, PNG, and WebP images without uploading files or losing quality.

Many online image tools require uploading your images to a server, signing up, or waiting for processing. This can slow down your workflow and raise privacy concerns.

That's why I built Resizo — a simple browser-based image tool that resizes and converts images directly on your device.

👉 Try it here

https://www.resizo.in/

Why Image Resizing Matters

Images that are too large can:

Slow down websites
Increase page load time
Affect SEO performance
Use unnecessary storage space

For developers, bloggers, and designers, resizing images is a frequent task.

But traditional tools often require:

Uploading images to a server
Creating an account
Waiting for processing
Accepting reduced image quality

A browser-based tool removes these problems.

What Makes Resizo Different

Resizo processes images directly in your browser, meaning:

No uploads required
No account needed
Faster processing
Better privacy
Instant results

Your image never leaves your device.

Key Features

Instant Image Resizing

Resize images directly in your browser.

Supported formats:

JPG
PNG
WebP

Privacy Focused

Since everything runs locally in your browser, your files remain private.

Simple Interface

The tool is designed to be clean and easy to use without unnecessary steps.

Available Image Tools

Resizo also includes multiple tools for image optimization.

Resize Image for Social Media

Instagram Image Resizer

https://www.resizo.in/resize-image-for-instagram/
YouTube Image Resizer

https://www.resizo.in/resize-image-for-youtube/
Facebook Image Resizer

https://www.resizo.in/resize-image-for-facebook/
Twitter Image Resizer

https://www.resizo.in/resize-image-for-twitter/
LinkedIn Image Resizer

https://www.resizo.in/resize-image-for-linkedin/
WhatsApp Image Resizer

https://www.resizo.in/resize-image-for-whatsapp/

Image Optimization Tools

PNG Compressor

https://www.resizo.in/compress-png-online/
JPG to WebP Converter

https://www.resizo.in/jpg-to-webp-converter/

Who Can Use This Tool?

Resizo is useful for:

Developers

Quickly resize UI images, thumbnails, or assets.

Bloggers

Optimize blog images for faster loading pages.

eCommerce Sellers

Prepare product images for marketplaces and stores.

Social Media Creators

Resize images for different platform requirements.

Why Browser-Based Tools Are Better

Traditional image tools upload your images to a remote server. This can cause:

privacy risks
slower performance
file size limitations

With browser-based processing, images stay on your device and are processed instantly.

Try the Tool

If you're looking for a fast and private way to resize images, check it out here:

👉 https://www.resizo.in/

Final Thoughts

Image optimization is essential for websites, social media, and digital content.

Using a browser-based image resizer makes the process faster, safer, and easier without sacrificing quality.

If you regularly work with images, tools like Resizo can help simplify your workflow.

Creating a Responsive Flutter Application for All Devices

Eldho Paulose — Mon, 10 Jun 2024 08:33:27 +0000

Building a responsive application in Flutter ensures that your app provides a seamless experience across different devices, whether it’s a mobile phone, tablet, or desktop. In this blog post, we will explore how to make your Flutter app responsive by using various techniques and widgets.

Introduction
Setting Up Your Flutter Environment
Understanding MediaQuery
Using LayoutBuilder for Adaptive Layouts
Leveraging Flex Widgets (Row and Column)
Utilizing the Expanded and Flexible Widgets
Responsive Text Scaling
Platform-Specific Adjustments
Testing Responsiveness
Conclusion

1. Introduction

Responsive design is crucial for creating applications that offer an optimal user experience regardless of the device being used. In Flutter, there are multiple approaches and widgets that facilitate the development of responsive layouts. Let's dive into these methods.

2. Setting Up Your Flutter Environment

Before we start, ensure that your Flutter environment is set up. You can follow the official Flutter installation guide if you haven’t already.

flutter create responsive_app
cd responsive_app

Open your project in your preferred IDE (VS Code, Android Studio, etc.).

3. Understanding MediaQuery

The MediaQuery widget is a powerful tool in Flutter that provides information about the size and orientation of the current screen. It allows you to adjust your layout based on the screen dimensions.

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: ResponsiveHomePage(),
    );
  }
}

class ResponsiveHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    var screenSize = MediaQuery.of(context).size;

    return Scaffold(
      appBar: AppBar(title: Text('Responsive App')),
      body: Center(
        child: Text(
          'Screen width: ${screenSize.width}, height: ${screenSize.height}',
          style: TextStyle(fontSize: 20),
        ),
      ),
    );
  }
}

4. Using LayoutBuilder for Adaptive Layouts

LayoutBuilder is another essential widget that builds a widget tree based on the parent widget's constraints.

class ResponsiveLayout extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: LayoutBuilder(
        builder: (context, constraints) {
          if (constraints.maxWidth > 600) {
            return _buildWideContainers();
          } else {
            return _buildNarrowContainers();
          }
        },
      ),
    );
  }

  Widget _buildWideContainers() {
    return Row(
      children: [
        Expanded(child: Container(color: Colors.red, height: 200)),
        Expanded(child: Container(color: Colors.blue, height: 200)),
      ],
    );
  }

  Widget _buildNarrowContainers() {
    return Column(
      children: [
        Container(color: Colors.red, height: 200),
        Container(color: Colors.blue, height: 200),
      ],
    );
  }
}

Mobile View:

desktop View:

5. Leveraging Flex Widgets (Row and Column)

Row and Column are flexible widgets that can adapt to different screen sizes. Using these widgets effectively can help create responsive layouts.

class FlexLayout extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: [
          Expanded(
            child: Row(
              children: [
                Expanded(child: Container(color: Colors.green)),
                Expanded(child: Container(color: Colors.orange)),
              ],
            ),
          ),
          Expanded(
            child: Row(
              children: [
                Expanded(child: Container(color: Colors.blue)),
                Expanded(child: Container(color: Colors.purple)),
              ],
            ),
          ),
        ],
      ),
    );
  }
}

Mobile View:

desktop View:

6. Utilizing the Expanded and Flexible Widgets

The Expanded and Flexible widgets control how a child of a Row, Column, or Flex flexes.

class ExpandedFlexibleExample extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: [
          Expanded(
            child: Container(color: Colors.red),
          ),
          Flexible(
            child: Container(color: Colors.blue),
          ),
        ],
      ),
    );
  }
}

Mobile View:

desktop View:

7. Responsive Text Scaling

Ensure that your text scales appropriately by using the textScaler.

class ResponsiveText extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Text(
          'Responsive Text',
          style: TextStyle(fontSize: 20),
          textScaler: MediaQuery.textScalerOf(context),
        ),
      ),
    );
  }
}

Mobile View:

desktop View:

8. Platform-Specific Adjustments

Adjust your layout based on the platform (iOS, Android, Web).

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Platform.isWindows ? _buildWindowsLayout() : _buildAndroidLayout(),
    );
  }

  Widget _buildWindowsLayout() {
    return Center(child: Text('Windows Layout'));
  }

  Widget _buildAndroidLayout() {
    return Center(child: Text('Android Layout'));
  }
}

Mobile View:

desktop View:

9. Testing Responsiveness

Test your app on multiple devices and screen sizes using the Flutter emulator or physical devices. You can also use tools like flutter_device_preview.

dependencies:
  flutter:
    sdk: flutter
  device_preview: ^0.8.0

import 'package:device_preview/device_preview.dart';

void main() {
  runApp(
    DevicePreview(
      enabled: !kReleaseMode,
      builder: (context) => MyApp(),
    ),
  );
}

10. Conclusion

Making a Flutter app responsive involves understanding and using widgets like MediaQuery, LayoutBuilder, Row, Column, and more. By following these practices, you can ensure that your app provides a great user experience on any device.

Connect with Me

If you enjoyed this post and want to see more of my work, feel free to check out my GitHub and personal website:

GitHub: eldhopaulose
Website: Eldho Paulose
Resizo: Resizo

Flutter Fundamentals: Unwrapping the Essentials of Basic Widgets

Eldho Paulose — Fri, 07 Jun 2024 16:41:44 +0000

Introduction

Flutter, Google’s UI toolkit for crafting natively compiled applications for mobile, web, and desktop from a single codebase, has gained immense popularity. At the heart of Flutter are its widgets, the building blocks of any Flutter app. Understanding these widgets is crucial for any Flutter developer. In this blog, we will unwrap the essentials of basic Flutter widgets and how to use them.

What are Widgets in Flutter?

Widgets in Flutter describe what their view should look like given their current configuration and state. When a widget’s state changes, Flutter rebuilds the widget to reflect the changes. This declarative approach to UI development makes the code more predictable and easier to manage.

Basic Flutter Widgets

Scaffold

The Scaffoldwidget is the base of the visual interface and provides a structure to the app, such as an AppBar, Drawer, BottomNavigationBar, and more.

Scaffold(
  appBar: AppBar(
    title: Text('Flutter Demo'),
  ),
  body: Center(
    child: Text('Hello, world!'),
  ),
  floatingActionButton: FloatingActionButton(
    onPressed: () {},
    child: Icon(Icons.add),
  ),
)

Text

The Text widget is used to display a string of text with a single style.

Text(
  'Hello, Flutter!',
  style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
)

Container

The Containerwidget is a versatile widget that can contain a single child widget, and allows you to customize its appearance with padding, margin, borders, and background color.

Container(
  padding: EdgeInsets.all(16.0),
  margin: EdgeInsets.all(10.0),
  decoration: BoxDecoration(
    color: Colors.blue,
    borderRadius: BorderRadius.circular(8.0),
  ),
  child: Text('I am inside a container'),
)

Row and Column

Row and Column widgets are used to arrange other widgets in a horizontal and vertical manner respectively.

Row Example:

Row(
  mainAxisAlignment: MainAxisAlignment.spaceEvenly,
  children:[
    Text('Item 1'),
    Text('Item 2'),
    Text('Item 3'),
  ],
)

Column Example:

Column(
  mainAxisAlignment: MainAxisAlignment.center,
  children:[
    Text('Item 1'),
    Text('Item 2'),
    Text('Item 3'),
  ],
)

Image

The Imagewidget is used to display images in your Flutter app.

Image.network('https://flutter.dev/images/flutter-logo-sharing.png')

Icons

The Iconwidget is used to display Material icons.

Icon(
  Icons.favorite,
  color: Colors.pink,
  size: 24.0,
)

Button Widgets

Buttons are used to capture user interactions and can come in various forms such as ElevatedButton, TextButton, and IconButton.

ElevatedButton Example:

ElevatedButton(
  onPressed: () {
    print('Pressed');
  },
  child: Text('Elevated Button'),
)

TextButton Example:

TextButton(
  onPressed: () {
    print('Pressed');
  },
  child: Text('Text Button'),
)

IconButton Example:

IconButton(
  icon: Icon(Icons.thumb_up),
  onPressed: () {
    print('Pressed');
  },
)

Conclusion

These basic widgets form the foundation of any Flutter application. By mastering these, you will be well-equipped to build more complex interfaces. Remember, Flutter’s true power lies in its widget composition, allowing you to create sophisticated UIs from simple building blocks.

Connect with Me

If you enjoyed this post and want to see more of my work, feel free to check out my GitHub and personal website:

GitHub: eldhopaulose
Website: Eldho Paulose
Resizo: Resizo

Understanding Flutter Widgets: Column vs Row

Eldho Paulose — Thu, 30 May 2024 05:09:39 +0000

In Flutter, the layout design revolves around widgets. Two of the most essential layout widgets are Columnand Row. They control how child widgets are positioned vertically and horizontally, respectively. Let’s dive into the details and see them in action with example code.

The Column Widget

The Columnwidget in Flutter is used to align child widgets in a vertical manner. It’s similar to a vertical LinearLayoutin Android or a vertical StackPanelin UWP. Here’s a simple example:

In this example, the mainAxisAlignment property is set to MainAxisAlignment.center, which centers the children vertically. The crossAxisAlignment is set to CrossAxisAlignment.start, aligning the children to the start of the cross axis (horizontally in this case).

The Row Widget

Conversely, the Rowwidget arranges its children horizontally. It’s akin to a horizontal LinearLayoutin Android or a horizontal StackPanelin UWP. Here’s an example:

Here, mainAxisAlignmentis set to MainAxisAlignment.spaceEvenly, which distributes the children evenly across the horizontal axis with equal spacing.

Combining Column and Row

You can nest Rowand Columnwidgets to create complex layouts. Here’s a nested example:

In this nested layout, a Rowis placed inside a Column, combining both horizontal and vertical alignment.

Conclusion

Understanding the Columnand Rowwidgets is crucial for effective layout design in Flutter. Experiment with the properties and nesting to create the desired UI for your app.

Contact with me
GitHub

Resizo: Resizo

TS-BoilerplateX

Eldho Paulose — Mon, 20 May 2024 10:17:59 +0000

TS-BoilerplateX is a meticulously crafted boilerplate tailored for developers seeking a seamless starting point for building powerful web applications with TypeScript and Express.js. With TS-BoilerplateX, harness the combined benefits of TypeScript's static typing and Express.js' flexibility to expedite your development process while ensuring code integrity and maintainability.

Starting off

I've documented my process and highlighted the main components in this article. If you're eager to dive into the code right away, you can head straight to the repository:github

Features

TypeScript support
Express.js integration
ESLint for code linting
Example controllers and routes
Comprehensive documentation
EditorConfig for consistent coding style

Installation

To quickly create an application skeleton, you can utilize the TS-BoilerplateX tool. You can run the application generator using the npx command.

npx ts-boilerplatex

To install TS-BoilerplateX, you can use npm:

npm install ts-boilerplatex

-> dev: Start the development server with nodemon.
-> start: Start the application using ts-node to execute src/main.ts.
-> lint: Run ESLint to lint source files in the src/ directory.
-> docs: Generate documentation using Typedoc from src/main.ts.
-> build: Compile TypeScript files using the TypeScript compiler (tsc) based on the tsconfig.json configuration.
-> build-all: Clean the build directory, then run build, esbuild-node, and esbuild-browser scripts.
-> clean: Remove build artifacts and generated documentation.

Project Structure

The project structure is organized as follows:

TS-BoilerplateX/
|-- bin/
|   -- server.ts
|-- controller/
|   -- indexController.ts
|-- routes/
|   -- index.ts
|-- README.md
|-- package.json
|-- tsconfig.json
`-- ...

bin/: Contains the server configuration.
controller/: Contains controller functions to handle route logic.
routes/: Contains route definitions.

Middleware

Morgan Morgan middleware is used for logging HTTP requests. It's configured to log requests in the "dev" format.
bodyParser bodyParser middleware is used to parse incoming JSON and URL-encoded requests. It's configured to handle JSON and URL-encoded requests with extended mode enabled.
compression compression middleware compresses HTTP responses before sending them to the client.
cookieParser cookieParser middleware is used to parse cookies attached to incoming requests.