Browser conversion note
ICO files are converted to a browser-friendly image format before compression so they are easier to preview and download.
Compress ICO
Optimize ICO favicon files. Reduce icon file size for faster website loading.
Select ICO files
or drop files here
Maximum file size: 50MB per file
Convert to a modern format for better compression. WebP is recommended for best results.
Super Fast
Process multiple files in seconds with our optimized browser-based tools.
100% Secure
All processing happens in your browser. Your files never leave your device.
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
Compress to Target Size
Quickly compress your files to specific file sizes
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About ICO Compression
ICO (Icon) is the standard format for favicons and application icons. Our ICO compression tool optimizes these small but important files, ensuring fast loading times for your website favicons and app icons without sacrificing sharpness and clarity. Whether you are preparing bilingual English and French documents, submitting files to CRA and Service Canada, or collaborating cross-border with US teams, this tool keeps your files lean and aligned with Canadian privacy expectations — nothing leaves your device.
Tailored for Users in Canada
Canadian users often juggle file sharing across provinces with varying broadband quality and between Canadian and US platforms. Whether you submit documents to federal and provincial portals, share files over Bell, Rogers, or Telus connections, or maintain bilingual English/French content, optimising file size keeps uploads reliable across the country's diverse network conditions.
- Canadian government portals (CRA, Service Canada, immigration forms) typically cap document uploads; compressing PDFs ahead of time avoids rejected submissions.
- When collaborating cross-border with the US, smaller files transfer faster over North American links and avoid email size rejections.
- For bilingual sites serving both English and French Canada, compressing media keeps pages fast for rural subscribers on slower plans.
- Canadian ISPs sometimes enforce data caps — smaller images and archives help users stay within monthly allowances.
How to Use This Tool
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1
Select Your Files
Click upload or drag your files into the area. Multiple files can be queued for batch processing — useful for bilingual document sets.
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2
Start Processing
Adjust the settings and start. All processing stays in your browser, keeping your files private and consistent with Canadian privacy expectations.
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3
Download the Results
Download files individually or all at once. Your originals remain unchanged, ready for cross-border sharing or government portal uploads.
Frequently Asked Questions
Will processing reduce quality?
It depends on the tool and the settings you choose. Many tools balance smaller file sizes with usable quality, and some actions like formatting or archive creation do not reduce quality at all.
Are my files safe and private?
Absolutely. All processing happens locally in your browser. Your files are never uploaded to our servers or transmitted over the internet, which helps keep your documents, media, and other files private.
What's the maximum file size?
Most tools accept files up to 50MB each. For larger files, try splitting them into smaller batches or using a different format.
How much can I reduce file size?
Results vary depending on the file type, content, and tool settings. Many files can often be reduced by 30-80%, while some tools focus on compatibility, cleanup, or conversion instead of maximum size reduction.
Can I use this for Canadian government portal uploads?
Yes. Federal and provincial portals (CRA, Service Canada, IRCC) often cap upload sizes. Our tools help you shrink PDFs and images to meet those limits before submitting.
Is this consistent with Canadian privacy law (PIPEDA)?
Since processing happens entirely in your browser and no files are uploaded, your data never leaves your device. This aligns well with PIPEDA's data-minimization principles.
Does it work for both English and French content?
Yes. Our tools handle text and documents in both English and French without issue — ideal for bilingual Canadian workplaces.
What is the maximum file size?
Most tools support files up to 50 MB each. For larger files, split them into smaller batches for reliable processing.
Why Choose Let Compress?
- Privacy-first — files never leave your device, consistent with PIPEDA expectations
- Free with no registration — no account, email, or payment required
- Great for cross-border work — compatible with both Canadian and US platforms
- Optimized for Canadian ISP connections (Bell, Rogers, Telus, Vidéotron)
- No upload limits or daily quotas, ever
- Handles both English and French content without issue
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.