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Social Image Resizer

Instagram feed (1080x1350 portrait, 1080x1080 square), Story/Reel (1080x1920), X post (1600x900 or 1200x675), Facebook feed (1200x630), LinkedIn feed (1200x627), Pinterest pin (1000x1500), YouTube thumbnail (1280x720), and TikTok (1080x1920). The resizer outputs all sizes from a

Social Media Tools

We resize and crop (cover) to fit each platform's recommended dimensions. All processing is local - your image never leaves the browser.

Instagram feed (1080x1350 portrait, 1080x1080 square), Story/Reel (1080x1920), X post (1600x900 or 1200x675), Facebook feed (1200x630), LinkedIn feed (1200x627), Pinterest pin (1000x1500), YouTube thumbnail (1280x720), and TikTok (1080x1920). The resizer outputs all sizes from a

This free Social Image Resizer from KX Toolkit is part of our all-in-one online toolkit. It runs entirely in your browser, so your data never leaves your device for client-side operations. 100% free, forever - no paywall, no credit card, no trial.

How to use the Social Image Resizer

  1. Pick the platform you're posting to.
  2. Paste or write your copy.
  3. Run the tool - it shows the count, suggestions or formatted text.
  4. Copy the result and paste it into the platform composer.

What you can do with the Social Image Resizer

  • Hit Twitter's 280-character limit while keeping links intact.
  • Generate relevant hashtags for Instagram and TikTok.
  • Turn plain text into Unicode bold/italic for LinkedIn posts.
  • Find the right caption length for each platform.

Why use KX Toolkit's Social Image Resizer

  • Browser-based: Works on Windows, macOS, Linux, iOS and Android - no install, no extension.
  • Privacy-first: Client-side tools never upload your data; server-side tools delete files right after processing.
  • Mobile-friendly: Full feature parity on phones and tablets - not a stripped-down view.
  • Fast: Optimised for instant feedback. No artificial waiting screens, no email-gated downloads.
  • One hub for everything: 300+ tools across SEO, text, image, PDF, code, color, calculators and more - skip switching between sites.

Tips for the best results

Schedule batches of posts using the character counter side-by-side with your scheduling tool - saves a lot of editing later.

Related Social Media Tools

If you find this tool useful, explore the full Social Media Tools collection or browse our complete tool directory. KX Toolkit is built for marketers, developers, designers, students and anyone who needs a quick utility without signing up for yet another SaaS.

What sizes should I export for each social network?
Instagram feed (1080x1350 portrait, 1080x1080 square), Story/Reel (1080x1920), X post (1600x900 or 1200x675), Facebook feed (1200x630), LinkedIn feed (1200x627), Pinterest pin (1000x1500), YouTube thumbnail (1280x720), and TikTok (1080x1920). The resizer outputs all sizes from a single source so you do not need to crop manually.
Should I use square or portrait for Instagram?
1080x1350 portrait (4:5) takes 25% more vertical real estate in the feed than square and consistently earns higher engagement. Square (1080x1080) is fine for grids that need uniformity. Avoid landscape (16:9) on Instagram; it shrinks dramatically in feed and underperforms compared to portrait or square.
How does the resizer handle different aspect ratios?
Quality resizers offer smart-crop (focuses on the detected subject), center-crop (default), and letterbox/pillarbox modes (adds blurred or solid borders to preserve the original framing). For brand assets and product photography, smart-crop usually delivers the best result; for screenshots and infographics, letterboxing prevents losing content.
What format should I export each size in?
PNG for graphics with text, sharp edges, and transparency. JPG (quality 85 to 90) for photographs where file size matters. WebP is increasingly accepted on all major platforms and offers better compression than JPG; use it when your CMS supports it. Avoid HEIC; many platforms still struggle with it.
Will the resizer compress images too aggressively?
Reputable resizers preserve quality by re-encoding at high settings (JPG quality 85 to 95) rather than over-compressing. Always inspect output for visible banding, blocking, or softening before publishing. If you need archival-quality output, export PNG so the resize step is the only quality cost in the pipeline.
Should I export the same image for every platform?
Aspect-ratio resizing is fine for consistency, but consider tailoring text overlays per platform. A Pinterest pin benefits from a vertical text headline; an Instagram square may not need text at all; a LinkedIn image often uses smaller, professional captions. Use the resizer for sizing and an editor for platform-specific text variants.

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