Images & Design

Social Image Resizer

Compose a local image for a chosen canvas size without guessing what will be cropped. Start with an editable aspect-ratio template, position the image, and export a newly encoded PNG or JPEG.

Free online tool

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Social image canvas

PNG, JPG, WebP, GIF, AVIF, BMP; up to 64 million source pixels. Animated images use a still frame.

These are editable design templates, not verified platform requirements. Check your destination’s current upload specification.

Composition preview

Choose an image or try the mountain example to compose your crop.

Image processing and generated artwork stay in your browser. Files are not uploaded by this tool.

GET STARTED

How to use the Social Image Resizer

  1. 01

    Choose a local raster image or load the original mountain example.

  2. 02

    Pick a generic starting size or type your own dimensions. Choose fill-and-crop or fit-with-background, then position the image with the two sliders.

  3. 03

    Check the live composition and download PNG or JPEG. The preview is scaled for display; the exported file uses your requested dimensions.

Examples

Square product card

Start at 1080 × 1080 and use fit-with-background to keep the complete product visible. Choose a background that matches the image edges.

Portrait crop with an off-center subject

Start at 1080 × 1350, choose fill-and-crop, and move horizontal placement toward the side containing the subject. The slider controls which part of an overflowing image stays visible.

Templates are editable design canvases

The named presets describe aspect ratios and pixel dimensions. They are generic starting points, not claims about any social platform’s current requirements. Confirm the destination’s upload rules, safe areas, file-size limit, and crop behavior before posting.

Crop, fit, and positioning

Fill-and-crop scales the image until it covers the canvas and removes overflow. Fit-with-background scales it until the full image is visible and fills the spare area with your selected color. Placement at 0% aligns the top or left edges; 100% aligns the bottom or right edges. Neither mode stretches the source.

What to know

  • Output is limited to 4,096 pixels per side and 12 million pixels.
  • A small source can be enlarged, which may soften details. JPEG is lossy; animation becomes a still image.

Common questions

Will the image be stretched?

No. Both composition modes keep the source aspect ratio. A different canvas shape results in cropping or background margins.

Can I export transparent padding?

The composition uses an opaque background color in both formats. Use the general Image Resizer if you need a transparent PNG fit without a fixed canvas.

Does it enforce platform file-size limits?

No. The tool sets pixel dimensions and offers JPEG at 92% encoder quality. File size varies with the artwork and browser encoder; check the downloaded file against your destination’s limits.

Sources & references