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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
- 1Drag & drop an image onto the upload area, or click to select a file from your device (JPEG, PNG, WebP).
- 2Click the "Generate Thumbnails" button.
- 3Once processing finishes, a ZIP archive containing the three thumbnails will download automatically.
Why use ShowPro's Image Thumbnail Generator?
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100% Private
Files never leave your browser. Zero server uploads.
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Instant Results
Processing happens locally — no waiting for uploads.
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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.
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