Compress Image to 20KB
Compress files to 20KB directly in your browser with no upload required.
Select JPG/JPEG/PNG/WEBP/GIF/BMP/TIFF/HEIC/AVIF/SVG/ICO/JXL files
or drop files here
Maximum file size: 50MB per file
100% Secure
All processing happens in your browser. Your files never leave your device.
Super Fast
Process multiple files in seconds with our optimized browser-based tools.
High Quality
Keep your files clear and usable while reducing size or converting formats.
Compress, convert & crop images offline on iPhone - privacy-first, batch up to 200
Related Tools
Compressing Images to Under 20 KB
The 20 KB target converts each image to WebP at aggressive quality with dimensions near 800 px. This fits batch tiny thumbnails, placeholders, and low-bandwidth previews across any source format. The tool auto-detects and applies the right conversion per input, defaulting to WebP for maximum efficiency at this extreme. Expect visible softening; reserve it for small display contexts. Ideal for large sets of preview images that must share a tiny uniform budget.
How to Compress Images Online
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1
Upload your images
Choose one or more JPG, PNG, WebP, AVIF, HEIC, GIF, BMP, or TIFF files from your device.
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2
Choose output and quality
Pick the format and quality settings that match your use case, such as smaller website images or easier email sharing.
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3
Compress and download
Run compression in your browser, preview the results, and download the reduced images individually or in a ZIP file.
Frequently Asked Questions
Is 20 KB realistic for a batch of photos?
Only for thumbnails and previews. At full display size, 20 KB photos look soft — use 100 KB or more for anything viewers see large.
Why convert all formats to WebP at 20 KB?
WebP gets the most quality out of a tiny budget across format types, giving the most consistent results for a mixed batch.
Why Choose Let Compress?
- No file upload required - 100% client-side processing
- Free to use with no registration needed
- Batch compress multiple files at once
- Optimized compression algorithms for best results
- Works on all modern browsers and devices
- No file size limits or compression quotas
Learn More About Image Compression
Explore these authoritative resources to deepen your understanding of image compression and optimization.
MDN Web Docs: Image Optimization
Comprehensive guide on image optimization for web performance by Mozilla.
Google Web Fundamentals: Image Optimization
Best practices for image optimization from Google's web performance team.
W3C WebP Specification
Official W3C specification for the WebP image format.