ImgExact

Resize an image for social media

Pick the platform and placement. The current size is applied with a center crop you can reposition first — presets are versioned and source-dated.

Images never leave your device No signup, no email No file limits or watermarks Works offline once loaded

Sizes are reviewed periodically; each preset cites its source in the table below.

Preset sources & review dates
PlatformPresetSizeConfidenceSource
Instagram Post — square 1080×1080 official source
Instagram Post — portrait 1080×1350 official source
Instagram Post — portrait (3:4 grid) 1080×1440 official source
Instagram Post — landscape 1080×566 official source
Instagram Story / Reel thumbnail 1080×1920 secondary source
Facebook Post — square 1080×1080 secondary source
Facebook Post — vertical 1080×1350 secondary source
Facebook Link preview 1200×630 secondary source
Facebook Story 1080×1920 secondary source
Facebook Cover — profile / page 851×315 secondary source
X Post — square 1080×1080 secondary source
X Post — landscape 1600×900 secondary source
X Profile header 1500×500 secondary source
X Profile picture 400×400 secondary source
LinkedIn Profile picture 400×400 secondary source
LinkedIn Cover — personal profile 1584×396 secondary source
LinkedIn Post — square 1080×1080 secondary source
LinkedIn Link preview 1200×627 secondary source
YouTube Video thumbnail 1280×720 official source
YouTube Channel banner 2560×1440 secondary source
YouTube Profile picture 800×800 secondary source
TikTok Post / Story 1080×1920 secondary source
TikTok Profile picture 200×200 secondary source

Last reviewed . Runs locally — your images never leave your device.

How it works

  1. Drop your image.
  2. Choose platform and format (for example Instagram post — 1080x1080).
  3. Reposition the crop if needed, then resize.
  4. Download the correctly sized file, plus a note of the exact spec used.

Supported formats

JPEG, PNG, WebP, AVIF and GIF (first frame).

Best with files up to 50 MB. Hard safety limit 200 MB.

Privacy

Everything happens in your browser: the image is decoded, transformed and encoded locally. Nothing is uploaded, and no filename, pixel data or metadata is sent anywhere. Read more on the privacy page.

Technical methodology

  • Presets live in a versioned config file (src/config/social-presets.ts) — each entry records the platform, dimensions, a source URL and the date it was last reviewed.
  • Crop-then-resize pipeline ensures exact output dimensions without distortion.
  • Platform names are used factually to describe sizes; there is no partnership or endorsement implied.

Known limitations

  • Platforms change their specifications. The review date on each preset tells you how fresh it is — if in doubt, check the linked source before posting something critical.
  • The tool sizes images; it cannot preview how the platform will re-compress them after upload.
Crop image Crop to 1:1, 4:5, 16:9 or any custom ratio with exact numeric control. Signature resizer Exact pixels + maximum KB + background — ready for form uploads.

Frequently asked questions

How current are these sizes?

Each preset shows when it was last reviewed and links its source. Presets are updated as platforms change, but always treat platform documentation as the final word — links are provided on the page.

Why does Instagram sometimes crop my image?

Instagram keeps uploads up to 1080 px wide as long as the aspect ratio is between 1.91:1 and 3:4. Choose a preset inside that range (for example 1080x1350) and your image will not be cropped by the platform.

Does this tool post to social media?

No. It prepares the image file; you upload it yourself in the app or site. No social accounts are involved.