Compress BMP to 20KB
Compress files to 20KB directly in your browser with no upload required.
Select BMP 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
Compress multiple files in seconds with our optimised algorithms.
High Quality
Maintain file quality while reducing file size up to 80%.
Compress, convert & crop images offline on iPhone - privacy-first, batch up to 200
Related Tools
Compressing BMP to Under 20 KB
The 20 KB target converts the BMP to WebP at aggressive quality with dimensions near 800 px. Given how large raw BMPs are, hitting 20 KB means accepting visible softening, suitable only for tiny thumbnails, placeholders, and low-bandwidth previews. The tool defaults to WebP because it extracts the most quality from such a small budget. Reserve this target for genuinely small display contexts. Whether you are optimizing for the NBN, preparing myGov submissions, or sharing files across Australia's vast distances, this tool keeps your files light and quick to transfer — even on regional, fixed-wireless, and satellite connections, with no upload required.
Made for Users in Australia
Australian internet ranges from fast NBN fibre in the capitals to satellite and fixed-wireless in regional and remote areas. Keeping files small is essential for reliable sharing across the NBN, for uploads to myGov and state services, and for delivering content to audiences on Telstra, Optus, and Vodafone mobile networks across vast distances.
- myGov and state government portals enforce upload limits — compress scanned IDs and documents before lodging them.
- For regional users on fixed-wireless or satellite NBN, smaller files mean fewer timeouts on slower, higher-latency links.
- Australian mobile plans often include data caps; pre-compressed media saves data for end users on the go.
- When sharing with New Zealand and Southeast Asia, smaller attachments transfer more reliably across trans-Tasman links.
How to Compress :format Files
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1
Select Your Files
Click upload or drag your files into the area. Queue several at once for batch processing.
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2
Start Processing
Choose your settings and start. Everything runs locally in your browser — no upload, which is especially helpful on regional and satellite NBN.
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3
Download the Results
Save your files individually or all at once. Your originals are never changed, and you only use data on the final smaller download.
Frequently Asked Questions
Is 20 KB realistic for a BMP photo?
Only as a tiny preview. BMP photos are multi-megabyte; reaching 20 KB requires heavy lossy compression and small dimensions.
Why WebP rather than JPEG from a BMP?
WebP delivers better quality at 20 KB than JPEG. Since BMP has no compression of its own, the choice of output format determines the final quality.
Can I compress files for myGov and state government portals?
Yes. myGov and state services often limit document sizes. Our tools help you get scans and forms under those limits before you upload them.
Will this work on slow regional or satellite NBN?
Yes. Because files are processed locally and never uploaded, the tool works well even on fixed-wireless and satellite connections where upload speeds are limited.
Does it respect my data cap?
Absolutely. Since nothing is uploaded, you only use data for the final, smaller download — ideal for Australians on metered mobile and NBN plans.
What file formats are supported?
We support PNG, JPG, WebP, AVIF, GIF, BMP, PDF, and many more. Check each tool page for its specific format support.
Why Choose Let Compress?
- No upload — saves your NBN and mobile data allowance
- 100% free, no sign-up — no subscriptions or hidden fees
- Reliable on slower regional, fixed-wireless, and satellite NBN connections
- Batch processing for busy Australian workflows
- Works in any modern browser — nothing to install
- Privacy by design — your files stay on your device
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.