Image Optimizer
Compress and resize JPEG, PNG, WebP, or GIF images up to 3MB, then export JPEG, PNG, WebP, or AVIF.
⭐ Ranked #31 most popular tool on Hostt
Start Optimizing Images
Upload one supported image, choose its dimensions and quality, and compare the result before downloading it.
Upload Your Image
Upload an image to optimize, compress, resize, and convert between formats
Drop your image here, or click to browse
Upload JPEG, PNG, WebP, or GIF • Max 3MB • Export JPEG, PNG, WebP, or AVIF
How to Optimize Images
- 1
Upload Your Image
Upload one JPEG, PNG, WebP, or GIF image of up to 3MB. Hostt sends the image to its server-side optimizer and does not store it.
Tip:AVIF, HEIC, and HEIF uploads are temporarily unavailable. You can still export an accepted image as AVIF. - 2
Choose Output Format
Choose JPEG, PNG, WebP, or AVIF output, or keep the source format when the optimizer supports it.
Tip:Use WebP for broad modern-browser support, AVIF for smaller web assets, JPEG for photos, or PNG when you need lossless output or transparency. - 3
Adjust Quality Settings
Set output quality from 1–100 and compare the preview and estimated file size before downloading.
Tip:80-90% quality is ideal for web images, 60-80% for thumbnails, and 90-95% for high-quality photography or print materials. - 4
Resize Dimensions
Enter custom dimensions or use presets for common sizes. Choose from multiple fit modes: cover, contain, fill, inside, or outside to control how images are resized.
Tip:Use 'contain' to preserve aspect ratio within bounds, 'cover' to fill dimensions with cropping, or 'fill' for exact dimensions regardless of ratio. - 5
Compare and Download
Review the input and output file sizes and visual result, then download the optimized image.
Tip:Check the output at 100% zoom before downloading, especially around text, edges, and gradients.
Security & Privacy
- Your image is sent to Hostt's Vercel serverless optimizer over HTTPS.
- The optimizer processes the image in memory and does not store it.
- Uploads are limited to 3MB. AVIF, HEIC, and HEIF input is temporarily unavailable.
Performance Tips
- Use WebP for broad modern-browser support or AVIF when a smaller web asset is worth a slower encode.
- Keep sources ≥ 2× target dimensions for best quality downscales.
- For favicons/thumbnails, prefer high contrast and simple shapes.
Features & Benefits
Advanced Format Support
Upload JPEG, PNG, WebP, or GIF and export JPEG, PNG, WebP, or AVIF.
Intelligent Compression
Sharp applies the selected quality setting with the encoder for the chosen output format.
Flexible Resizing Options
Multiple fit modes and custom dimensions let you resize images exactly as needed, from thumbnails to high-resolution displays.
Real-time Preview
Compare input and output previews and estimated file sizes while adjusting settings.
Privacy-First Processing
Hostt sends the selected image to its server-side optimizer but does not store it.
Single-image workflow
Optimize and download one image at a time with explicit output settings.
Frequently Asked Questions
Which image format should I use for my website?
WebP is a practical default for modern websites. AVIF can produce smaller files but takes longer to encode and may need a fallback for older clients. JPEG suits photos, while PNG suits graphics that need lossless output or transparency.
What quality setting provides the best balance?
For web images, 80-85% quality typically provides the optimal balance between file size and visual quality. Photography and hero images may benefit from 85-90%, while thumbnails can use 70-80%. Always preview at 100% zoom to ensure the quality meets your needs before finalizing.
How much can image optimization improve website speed?
Properly optimized images can reduce page weight by 50-80%, leading to 2-3x faster load times. This directly impacts SEO rankings, as Google uses page speed as a ranking factor. Studies show that a 1-second delay in load time can reduce conversions by up to 7%.
Are my images secure during processing?
Hostt sends the image to its Vercel serverless optimizer over HTTPS. The endpoint processes the image in memory and does not store it. Uploads are limited to 3MB, and AVIF, HEIC, and HEIF input remains blocked until the native decoder is patched.
What's the difference between resize modes?
Cover: Scales the image to cover the entire area, cropping if necessary. Contain: Scales to fit within dimensions, preserving aspect ratio. Fill: Stretches to exact dimensions, potentially distorting. Inside: Similar to contain but never enlarges. Outside: Similar to cover but ensures entire image is visible.
Can I optimize images for print quality?
While this tool is optimized for digital use, you can maintain print quality by using 95-100% quality settings and avoiding aggressive resizing. For professional print work, keep resolution at 300 DPI or higher. Consider using PNG format for graphics with text or sharp edges that need to remain crisp.
Use Cases & Applications
Website Performance Boost
Optimize hero images, product photos, and content graphics to dramatically improve page load times, Core Web Vitals scores, and overall user experience.
E-commerce Product Galleries
Create multiple optimized versions of product images for thumbnails, main views, and zoom features while maintaining quality and reducing bandwidth costs.
Email Campaign Assets
Compress newsletter images and marketing graphics to ensure fast loading in email clients while staying under attachment size limits.
Social Media Content
Resize and optimize images for different social platforms, meeting specific dimension requirements while maintaining visual impact and fast upload times.
Digital Asset Management
Batch convert legacy image libraries to modern formats, reducing storage costs and improving delivery speed for digital archives and media libraries.
Mobile App Resources
Generate optimized image assets for mobile applications, creating multiple resolutions for different screen densities while minimizing app size.