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Image Thumbnail Generator

Upload any image and instantly generate three square thumbnail sizes—100×100, 200×200, and 400×400—packaged neatly into a single ZIP file. Processing runs entirely in your browser, so your files stay private. Ideal for creating social media avatars, product gallery placeholders, or quick multi‑size exports.

🔒 Processing happens in your browser — files are never uploadedFree · No sign-up required

How to Use

  1. 1Drag & drop an image onto the upload area, or click to select a file from your device (JPEG, PNG, WebP).
  2. 2Click the "Generate Thumbnails" button.
  3. 3Once processing finishes, a ZIP archive containing the three thumbnails will download automatically.
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Need more power?

Upgrade to Pro for unlimited tasks, larger files, no watermarks.

Go Pro — $9/month

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Why use ShowPro's Image Thumbnail Generator?

🔒
100% Private
Files never leave your browser. Zero server uploads.
⚡
Instant Results
Processing happens locally — no waiting for uploads.
🆓
Completely Free
No account needed. Use 5 times per day, always free.

Frequently Asked Questions

Does it support HEIC images?

Most browsers cannot display HEIC natively. Convert to JPEG or PNG first with our [HEIC to PNG](/tools/heic-to-png) tool.

Can I get custom sizes instead of the three presets?

The free version provides the fixed sizes. Pro plan users will be able to enter custom dimensions in a future update.

Will my image leave my computer?

No. The entire workflow (resizing, cropping, ZIP packaging) runs in your browser. No server uploads.