Gratuito Online Image Resizer — Exact Width and Height in Pixels

Resize any image to exact pixel dimensions with our free online image resizer on XConverters. Enter width and height, lock aspect ratio, choose JPEG PNG or WebP, adjust quality, and download — all processado localmente no seu browser with transformImage. Sem conta, sem carregamento, completamente gratuito.

O que esta ferramenta faz

Images rarely arrive at the exact size a platform requires. Social posts need specific aspect ratios, CMS thumbnails have pixel caps, email signatures want small footprints, and print-adjacent workflows sometimes need precise dimensions. A reliable resizer lets you hit those targets without opening desktop software or trusting a cloud service with your files.

The XConverters resize tool shows your image natural dimensions after upload and lets you type target width and height in pixels. Keep aspect ratio is enabled by default so changing one dimension automatically updates the other — ideal when you know the width a layout needs but want proportions preserved. Turn it off when you need exact non-proportional dimensions for specialized layouts.

An allow upscale toggle controls whether the tool enlarges images beyond their original resolution. Upscale is off by default to avoid blurry enlargements, but you can enable it when you intentionally need a larger canvas. Output format supports JPEG, PNG, and WebP with a controlo de qualidade for JPEG and WebP. transformImage handles decoding, scaling, and re-encoding entirely no seu browser.

Because nothing is uploaded, client photos, product shots, and personal images stay on o seu dispositivo. XConverters is free with sem registo, making this resizer suitable for quick one-off edits and repeated daily workflows alike.

Como usar

Resizing an image on XConverters demora apenas alguns passos:

1. Abra o Resize Image tool on XConverters — acesso gratuito sem registo.
2. Clique em Carregar or drag an image into the drop zone. Common formats like JPG, PNG, and WebP are supported.
3. Note the natural width and height displayed after the file loads.
4. Enter your target width and/or height in pixels. With keep aspect ratio on, updating one field adjusts the other.
5. Toggle allow upscale if you need output larger than the source; leave it off to prevent accidental blur.
6. Selecione o formato de saída: JPEG, PNG ou WebP.
7. Adjust the controlo de qualidade for JPEG or WebP output to balance size and visual fidelity.
8. Clique em Transferir to save the resized image with dimensions reflected in the filename.

Decode, scale, and re-encode all happen on o seu dispositivo. XConverters does not store your images or require an account.

Funcionalidades principais

• Width and height fields in pixels
• Keep aspect ratio toggle (on by default)
• Allow upscale toggle for intentional enlargement
• Output formats: JPEG, PNG, and WebP
• Quality slider for JPEG and WebP
• transformImage engine — local no browser processing
• Gratuito unlimited resizing with sem registo
• Natural dimensions shown on upload for reference

Privacidade e segurança

Tudo corre localmente no seu browser no XConverters. Os seus dados nunca são carregados para os nossos servidores, guardados numa base de dados ou partilhados com terceiros. Criámos esta ferramenta para programadores, designers e utilizadores que precisam de resultados rápidos sem sacrificar a privacidade.

Apenas análises anónimas do site podem ser recolhidas para melhorar o desempenho e a usabilidade. O texto, os ficheiros ou os dados que processa nunca saem do seu dispositivo no uso normal.

Formatos suportados e casos de uso

Common reasons to resize images on XConverters:

• Social media: Fit Instagram, LinkedIn, or X cover and post size requirements quickly.
• Website assets: Generate hero images, thumbnails, and card images at exact pixel widths.
• Email signatures: Shrink large photos to lightweight dimensions for corporate email.
• E-commerce: Standardize product image dimensions for marketplace listing templates.
• Documents and slides: Resize screenshots and diagrams before inserting into reports.
• App and game dev: Produce placeholder or sprite sizes for UI mockups and prototypes.

Dicas para melhores resultados

• Leave allow upscale off unless you deliberately need a larger file — upscaling cannot add real detail.
• Use WebP with quality 80–88 for web images where browsers support it.
• When only one dimension matters, enter it and let keep aspect ratio calculate the other.
• PNG is best when you need lossless output; JPEG when file size is the priority.
• Check the downloaded filename for the final width×height confirmation.

Perguntas frequentes

Is this image resizer free? Yes. XConverters offers unlimited resizing at no cost with sem conta necessária.

As minhas imagens são carregadas? Não. O transformImage corre totalmente no browser; os ficheiros nunca saem do seu dispositivo.

What does keep aspect ratio do? When enabled, changing width automatically updates height (and vice versa) to preserve proportions.

Should I enable allow upscale? Only if you need output larger than the original. Default off prevents blurry enlargements.

Which formats can I export? JPEG, PNG, and WebP. Quality slider applies to JPEG and WebP.

Preciso de instalar software? Não. Qualquer browser moderno no XConverters chega — o processamento é 100 % local e gratuito.