Drag & Drop Images Here
Supports PNG, JPG, WEBP and more. Batch processing enabled.
Or try with these examples
Loaded Images
Preview shows the generated thumbnail
Thumbnail Settings
Higher quality results in larger file size.
Batch Apply
Same settings for all images
No login required for first 1000 images. Should be enough for you. If not, contact me and I'll add more for free.
Fast & Professional Thumbnail Creation
Generate perfect thumbnails for your website, social media, or video platforms. Batch process multiple images with precise control over size and quality.
Size Presets
Quickly apply standard sizes for YouTube, social media posts, and blog headers with one click.
Smart Cropping
Choose between Cover, Contain, or Stretch modes to ensure your thumbnail looks perfect every time.
Batch Processing
Convert dozens of images into thumbnails simultaneously and download them all in a single ZIP file.
How to Create Professional Thumbnails Online
Upload Your Images
Drag and drop one or multiple images into the upload area. We support PNG, JPG, WEBP, and many other formats.
Select a Preset or Custom Size
Choose from popular presets like YouTube (1280x720), Instagram Square (1080x1080), or enter your own custom dimensions.
Adjust Fit and Quality
Choose how your image fits the thumbnail (Cover, Contain, or Stretch) and adjust the quality/format for optimal file size.
Download Instantly
Download your processed thumbnails individually or as a batch ZIP file. All processing happens in your browser for maximum privacy.
Frequently Asked Questions
What is the best size for a YouTube thumbnail?
The recommended size for a YouTube thumbnail is 1280 x 720 pixels (16:9 aspect ratio). Our tool provides this preset to ensure your videos look professional and attract more clicks.
How to resize images for Instagram and TikTok?
Simply upload your photo, select the 'IG Post' (1080x1080) or 'TikTok/Story' (1080x1920) preset, and use the 'Cover' mode to fill the frame perfectly without distortion.
Is there a limit on batch processing?
You can process multiple images at once. For optimal performance, we recommend batches of up to 50 images. All images can be downloaded in a single, organized ZIP file.
Is this thumbnail maker really free and private?
Yes! All processing is done client-side using your browser's Canvas API. Your photos never leave your device, ensuring 100% privacy and security.