Actualizado en marzo de 2026

Free Image Resizer

Resize images to any dimension instantly. Choose from social media presets, set custom sizes, and export in PNG, JPG, or WebP - all processed in your browser for maximum privacy.

Drop images here or click to upload PNG, JPG or WebP

Tamaño máximo de archivo 10 MB. Inscribirse para más.

How to Resize Images in 3 Steps

Upload your image, set your target dimensions, and download the resized result instantly.

Upload Your Image

Choose a PNG, JPG, or WebP file from your device. Drag-and-drop or select multiple files for batch processing.

Set Your Dimensions

Enter custom width and height, or pick from social media presets like Instagram, Facebook, and YouTube sizes.

Download Resized Image

Get your resized image in PNG, JPG, or WebP format. Adjust quality settings for the perfect balance of size and clarity.

¿Por qué elegir nuestro redimensionador de imágenes?

Canvas API Resize Engine

El tamaño de las imágenes se cambia mediante las API de Canvas nativas del navegador con interpolación bilineal. Ajuste el control deslizante de calidad para equilibrar la nitidez y el tamaño del archivo para cada exportación.

Zero Server Contact

Your photos never leave your device — no upload, no bandwidth used, no waiting. Even batch resizing stays entirely in your browser.

Social Media Presets

One-click presets for Instagram, Facebook, Twitter/X, LinkedIn, YouTube, and Pinterest dimensions.

Múltiples formatos de salida

Exporte imágenes redimensionadas en PNG para obtener una calidad sin pérdidas, JPG para archivos más pequeños o WebP para un rendimiento web moderno.

Procesamiento por lotes

Upload multiple images at once and resize them all to the same dimensions in a single operation.

Desktop & Mobile Ready

Resize single images or entire batches on any device — phone, tablet, or desktop — with the same full-featured interface.

Comparación de formatos de imagen

Choose the right output format based on your use case. Each format has different strengths for quality, file size, and transparency support.

Formato	Mejor para	Transparencia	Compresión	Typical Size
PNG	Graphics, logos, screenshots	si	Sin pérdidas	Larger
JPG	Photographs, complex images	No	Lossy (adjustable)	Smaller
WebP	Web pages, all content types	si	Both lossy & lossless	Smallest

Preguntas frecuentes

How does the image resizer work?

Upload your image, set the target dimensions or pick a social media preset, and download the resized file in seconds. Everything runs in your browser — your photos never leave your device, so there is no upload wait and no privacy risk.

What image formats are supported?

You can upload PNG, JPG, JPEG, WebP, BMP, and GIF images. Output formats include PNG, JPG, and WebP with adjustable quality settings. PNG is ideal for graphics with transparency, JPG works best for photographs, and WebP offers smaller file sizes for web use.

Can I resize multiple images at once?

Yes! Our batch processing feature lets you upload and resize multiple images simultaneously with the same dimensions and settings. This is especially useful for preparing product photos, social media posts, or portfolio images where you need consistent sizing across a set of files.

Are there preset sizes for social media?

Sí, incluimos ajustes preestablecidos para plataformas populares, incluidas publicaciones de Instagram (1080 x 1080), portada de Facebook (820 x 312), encabezado de Twitter (1500 x 500), banner de LinkedIn (1584 x 396), miniatura de YouTube (1280 x 720) y más. Los ajustes preestablecidos se actualizan periódicamente para que coincidan con las dimensiones recomendadas actualmente de cada plataforma.

¿Los datos de mis imágenes son privados y seguros?

Absolutely. All image processing happens entirely in your browser using the HTML5 Canvas API. Your images are never uploaded to our servers or any third party. This client-side approach means your photos remain on your device at all times, making the tool safe for sensitive or personal images.

What is the maximum file size I can resize?

There is no strict file size limit since processing happens in your browser. However, very large images (over 50MB) may be slower depending on your device's processing power. For best performance, we recommend resizing images under 30MB on mobile devices and under 100MB on desktops.

Will resizing reduce my image quality?

Resizing to smaller dimensions preserves quality well because the algorithm samples from more pixel data. When enlarging images, some quality loss is expected due to interpolation. For JPG and WebP outputs, you can fine-tune quality with our adjustable slider to balance file size and visual clarity.

How do I resize an image without changing the aspect ratio?

Enable the aspect ratio lock toggle before entering your dimensions. When locked, changing the width automatically adjusts the height proportionally, and vice versa. This prevents your image from appearing stretched or squished, which is especially important for portraits and product photos.

Can I use this tool to reduce image file size for email or web?

Sí, cambiar el tamaño es una de las formas más efectivas de reducir el tamaño del archivo. Reduzca las dimensiones al tamaño de visualización objetivo, elija JPG o WebP como formato de salida y ajuste el control deslizante de calidad hacia abajo. Una foto de 4000 px redimensionada a 1200 px en JPG con una calidad del 80% puede reducirse de varios megabytes a menos de 200 KB.

¿El cambio de tamaño funciona en teléfonos móviles y tabletas?

Yes, the tool is fully responsive and works on any modern mobile browser including Safari on iOS and Chrome on Android. Processing happens on-device, so no app installation is needed. For very large images, a device with at least 3GB of RAM is recommended for smooth performance.

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