Compress Image
Compress image online for free. Reduce JPG, PNG, WebP, AVIF, HEIC, GIF, BMP, and TIFF files in your browser with no upload required.
or drop files here
Maximum file size: 50MB per file
Convert to a modern format for better compression. WebP is recommended for best results.
High Quality
Maintain file quality while reducing file size up to 80%.
100% Secure
All processing happens in your browser. Your files never leave your device.
Super Fast
Compress multiple files in seconds with our optimised algorithms.
Compress, convert & crop images offline on iPhone - privacy-first, batch up to 200
Compress to Target Size
Quickly compress your files to specific file sizes
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About the Image Compressor
Let Compress gives you one browser-based tool for reducing image size across popular formats such as JPG, PNG, WebP, AVIF, GIF, BMP, TIFF, and HEIC. Format-aware compression keeps images usable for websites, email, storage, and sharing while your files stay on your device.
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 this image compressor private?
Yes. Image compression happens locally in your browser, so your files are not uploaded to our servers.
Which image formats can I compress?
You can compress common image formats including JPG, PNG, WebP, AVIF, GIF, BMP, TIFF, and HEIC.
Will image quality change after compression?
Compression settings affect the final balance between file size and visual quality. In most cases you can reduce image size significantly while keeping the image clear enough for web, email, and everyday sharing.
Can I compress multiple images at once?
Yes. You can add multiple images, compress them together, and download the results one by one or as a ZIP archive.
How to compress photos online?
Upload your photos to our image compressor and adjust the quality slider. Supports JPG, PNG, WebP, HEIC, GIF, BMP, and more. All processing happens in your browser.
How to compress a picture for email?
Upload your picture, reduce quality until the file size is under your email limit, then download. Works with any image format and keeps your files private.
What is the best image compressor?
Our browser-based image compressor reduces file size by up to 80% while keeping visual quality. It supports all major formats and never uploads your images to any server.
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
- Optimised compression algorithms for best results
- Works on all modern browsers and devices
- No file size limits or compression quotas
Learn More About File Compression
Explore these authoritative resources to deepen your understanding of file compression and optimisation.
MDN Web Docs: Image Optimisation
Comprehensive guide on image optimisation for web performance by Mozilla.
Google Web Fundamentals: Image Optimisation
Best practices for image optimisation from Google's web performance team.
W3C WebP Specification
Official W3C specification for the WebP image format.