Use it right here — already set up for this task

Redimensionador de Imágenes

Redimensione Imágenes Online

Redimensione imágenes a dimensiones personalizadas o ajustes preestablecidos para redes sociales. Funciona en su navegador - sin necesidad de subida.

Subir Imagen

Haga clic para subir o arrastre y suelte

PNG, JPG, WebP (máx. 50MB)

Suba una imagen para comenzar

Acerca del Redimensionador de Imágenes

Nuestra herramienta gratuita de redimensionamiento de imágenes le permite redimensionar imágenes a cualquier dimensión personalizada o elegir entre ajustes preestablecidos populares para redes sociales. Perfecto para optimizar imágenes para Instagram, Facebook, Twitter, YouTube y más.

Características:

Controles de ancho y alto personalizados
Opción de mantener relación de aspecto
Ajustes preestablecidos rápidos para plataformas de redes sociales
Soporte para formatos PNG, JPG y WebP
Funciona completamente en su navegador - las imágenes nunca se suben a servidores
Completamente gratis sin registro ni marcas de agua

Estándares y Referencias

Última actualización: 2026-03-10

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Open the full Image Resizer →

Why this matters

Instagram Stories display full-screen on a phone at a 9:16 ratio, and any image that doesn't match gets letterboxed with blank bars above and below, or cropped unpredictably by Instagram's own auto-fit. A landscape photo or a standard square post image looks noticeably worse dropped straight into a Story compared to one pre-cropped to 1080×1920 — the difference between a professional-looking Story and one with awkward black bars comes down entirely to getting this one dimension right before uploading.

Step by step

1
Open the Image Resizer
The dimensions are already set to 1080×1920 — drop in your photo.
2
Frame the crop
Drag the crop area to a tall 9:16 region — keep your subject in the middle third since Instagram overlays UI elements near the top and bottom.
3
Preview
Check the full-screen preview to confirm nothing important is cut off.
4
Download
Save the 1080×1920 image to your device.
5
Post to Stories
Upload directly — no letterboxing, no unexpected crop.

Frequently asked questions

What is the exact Instagram Story size?

1080×1920 pixels, a 9:16 portrait aspect ratio, matching a standard phone screen.

Why does my photo show black bars on Stories?

Instagram letterboxes any image that doesn't match the 9:16 ratio rather than stretching it. Resizing to exactly 1080×1920 first eliminates the bars.

Do my Story photos leave my device?

No. Resizing runs entirely in your browser using the Canvas API — nothing is uploaded, which matters for personal photos headed to social media.

Where should I keep the important content in the frame?

Instagram's own UI (profile name, reply bar, stickers) overlaps roughly the top and bottom 250px of a Story. Keep faces and text in the middle 70% of the frame.

Is this the same size as a Reel?

Yes — Reels use the same 1080×1920 (9:16) full-screen format as Stories.

Can I resize several photos to Story size at once?

Yes — use the Batch Photo Editor with a 1080×1920 crop applied to every image in a folder.

Try Image Resizer now

Free, private, no signup. Runs in your browser.

Open Image Resizer →

Resize Image for Instagram Story (1080×1920)