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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.
🔒 File processing runs locally in your browserFree to start · 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.
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Need more power?
Upgrade to Pro for higher usage limits, premium features, and an ad-free experience.
Go Pro — $9/monthWhy use ShowPro's Image Thumbnail Generator?
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Private by Design
File-processing tools keep your files in the browser.
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Instant Results
Processing happens locally — no waiting for uploads.
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Free to Start
No account needed for the free tier. Limits are shown where they apply.
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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