Free Online Image Resizer

Resizea images a dimensiones exactas o por porcentaje - con lock de aspect-ratio

🔒 100% en el browser🆓 Gratis para siempre⚡ Sin sign-up
Nota: La interfaz de la herramienta de abajo por ahora solo está en inglés. Estamos traduciéndolas una a una. Ver esta herramienta en inglés →

Cómo funciona

  1. 1
    Subí una image

    Soltá o elegí un file JPG, PNG o WebP.

  2. 2
    Pick el tamaño objetivo

    Ingresa width y height (o scale %) - o elegí un preset como 1080×1080 (Instagram) o 1280×720 (YouTube thumbnail).

  3. 3
    Descarga la image resizeada

    Guardá el file resizeado. El aspect ratio original se preserva salvo que lo destrabás.

Sobre Free Online Image Resizer

Image resizer gratis online. Cambia cualquier JPG, PNG o WebP a un width y height exactos, o escalá por porcentaje, con lock de aspect-ratio opcional. Presets para Instagram, YouTube thumbnail, Twitter card y otros tamaños sociales. Corre entero en tu browser. Free Online Image Resizer en 712 Tools corre entero dentro de tu browser con APIs nativas de JavaScript - ningún server ve tus datos. Eso significa resultados al instante, privacidad total y sin límites de upload.

Ya sea para una sesión de debug, una comprobación rápida o un incidente en producción, esta herramienta es gratis y sin límite de usos. Sin watermarks, sin sign-up y sin ads dentro de la herramienta.

Preguntas frecuentes

¿Resizear pierde quality?

Achicar es lossless en la percepción - el resizer usa bilinear resampling de alta quality. Agrandar siempre pierde nitidez; para eso, un AI upscaler es mejor tool.

¿El formato de salida matchea el de entrada?

Por default sí. Opcionalmente exportá un PNG resizeado como JPG o WebP para menor file size.

¿Cuáles son los presets sociales?

Instagram cuadrado (1080×1080), Instagram story (1080×1920), YouTube thumbnail (1280×720), Twitter/X post (1600×900), LinkedIn banner (1584×396), Facebook cover (820×312).

¿Se suben mis images?

No. El resizeo corre en tu browser via Canvas API.

Leer más

8 min de lectura

How to blur part of an image online (free, no upload, no watermark)

The safe way to blur a face, license plate, credit card number, or address in a screenshot - with a browser-based blur brush that never uploads your image. Includes the mistakes that make blur reversible, and why pixelation is often the safer choice.

8 min de lectura

Canva's AI image generator is the best thing to happen to solo game devs - here's the honest review

I finally sat down with Canva Dream Lab (the one built on Leonardo Phoenix) to make a game logo, and it changed my mind about AI art for indie devs. Here's what it's actually good at, where it falls apart, and the tiny stack of free tools that turns its output into ship-ready assets.

8 min de lectura

The best free background remover that doesn't upload your image (2026)

Most "free" background removers upload your image to a server, cap you at three edits, and stamp a watermark on anything the free tier is allowed to keep. Here's the actual free option in 2026 - how it works, what quality to expect, and where it beats and loses to remove.bg, Canva and Photoshop.

9 min de lectura

The best free physics editor alternatives for 2D game devs in 2026

Every 2D game needs collision shapes, and every paid physics editor charges you for them. Here's what a physics body editor actually does, what to look for in a free one, and how the current free options - desktop and browser - stack up in 2026.

5 min de lectura

YouTube thumbnail sizes 2026: dimensions, HD download, and design that gets clicked

Every YouTube thumbnail resolution YouTube stores, the maxres trap, and the design rules that separate 3% click-through videos from 12% ones.

5 min de lectura

WebP vs JPG in 2026: why WebP won, and when JPG is still right

WebP files are 25-35% smaller than JPG at the same visual quality. Every browser supports it. Every CDN serves it. Here's why the JPG-vs-WebP debate is over - and the two edge cases where JPG still wins.

6 min de lectura

The best free tools for content creators in 2026 (no signup, no watermark)

Free tools for TikTok, Reels, YouTube Shorts, and Instagram - screen recording, hashtag research, sound effects, fancy fonts, resizing - that don't demand your email or slap a watermark on your work.

5 min de lectura

How to compress images without losing quality (JPG, PNG, WebP in 2026)

The math behind JPG quality, why WebP is now the smarter default, and the settings that give 60% file-size savings with no visible quality loss.

5 min de lectura

Every social media image size you actually need in 2026

TikTok, Reels, Shorts, Instagram, X, YouTube, LinkedIn, Facebook, Pinterest - the current image and video dimensions, updated for 2026, in one bookmarkable list.

6 min de lectura

Favicon and app icon complete guide 2026 (every size, every platform)

The favicon.ico that still matters, the apple-touch-icon that isn't optional, the PWA icons that make you installable, and the iOS + Android sets your app needs on day one.