InfyTool
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Resize images for Threads

Threads uses Instagram’s image sizes: 4:5 portraits look largest, squares and 1.91:1 landscapes also work — previewed live here.

Runs in your browser. Files are never uploaded — you can go offline after the page loads.

How to use the Threads Image Resizer

  1. Drop one image — a photo, logo or design export.
  2. Every size for this platform appears as a live preview with its dimensions and ratio.
  3. Slide between Fit and Fill on any card and drag the preview to reposition; nothing is stretched.
  4. Download a single size, or all of them as a ZIP.

Easy to use

Drop files, pick options, download. Whole folders at once, no signup, no daily limit.

Best quality

The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.

Private & secure

Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.

Threads shares Instagram’s image pipeline: 1080 px wide, an 8 MB limit, and 4:5 portrait posts (1080×1350) displayed largest in the feed. Squares (1080×1080) and 1.91:1 landscapes (1080×566) are shown in full; taller ratios are cropped in the feed and expanded on tap.

Every Threads size on this page, verified for 2026: Portrait post 1080×1350 px (4:5 · under 8 MB), Square post 1080×1080 px (1:1), Landscape post 1080×566 px (1.91:1), Profile photo 320×320 px (1:1). Each card is a live preview of your image in that frame — drag to reposition, slide between Fit (whole image, background added) and Fill (frame covered, edges cropped), then download the one you need or every size as a ZIP. Nothing is uploaded; the rendering runs in your browser.

This is a pre-set view of the Social Media Image Resizer. Every other platform is one tab away.

Frequently asked questions

What image size does Threads use?

1080 px wide, up to 8 MB. Portrait 1080×1350 (4:5) is recommended; 1080×1080 square and 1080×566 landscape are also displayed uncropped.

What size is a Threads portrait post in 2026?

1080×1350 pixels (4:5), under 8 MB — 4:5 · under 8 MB. Drop your image above and the portrait post card renders it at exactly that size; use the Fit/Fill slider to choose between showing the whole picture and filling the frame.

What size is a Threads square post in 2026?

1080×1080 pixels (1:1), under 8 MB — 1:1. Drop your image above and the square post card renders it at exactly that size; use the Fit/Fill slider to choose between showing the whole picture and filling the frame.

Other presets

Social Media Image ResizerEvery platform size, fit or fill Image ResizerPixels, cm, inches, crop, DPI Image CompressorSmaller files, same look

Your files never leave your device

Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.

  • No upload, ever. Turn off Wi-Fi after the page loads and every tool keeps working.
  • No limits. No file-size cap, no queue, no watermark, no account.
  • Runs on your CPU. Batches use several cores in parallel; nothing is throttled.

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