Resize one image to every social size — free
Upload once, download a ZIP with every format: Instagram, Facebook, TikTok, LinkedIn, YouTube, and X. Runs entirely in your browser — your image never leaves your device.
Everything happens in your browser — the image is never uploaded or stored anywhere.
How it works
- 1
Upload your image
Drop in a PNG, JPG, or WebP. Start from the largest version you have — downscaling keeps quality, upscaling can't add it.
- 2
Pick sizes and fit
Tick the formats you need, then choose Fill (center-crop to the exact ratio) or Fit (pad with a background color).
- 3
Download the ZIP
One click renders every selected size at exact pixels and packs them into a single ZIP, named per platform.
Frequently asked questions
Is the image resizer really free?
Yes — no signup, no card, no watermark, no limits. It's one of Octonity's free tools for social media teams.
Does the tool upload my image?
No. Resizing happens entirely in your browser using the canvas API — the image never leaves your device, and nothing is stored.
Which social media image sizes are included?
All the everyday formats for Instagram (post, portrait, Story/Reel), Facebook (post, cover), TikTok, X (post, header), LinkedIn (post, cover), and YouTube (thumbnail, banner) — kept up to date as platforms change their specs.
Will my image lose quality?
Each size is rendered at its exact target pixels from your original. Quality stays sharp as long as your source is at least as large as the biggest size you export — so upload the largest version you have.
Designing posts every day?
This tool crops one image. Octonity's built-in editor goes further — brand kits, templates, and smart-resize that re-flows a full design across 10+ formats, next to your scheduler and inbox.