How does FileSlim protect my privacy?

FileSlim processes all files locally in your browser using WebAssembly. No files are uploaded to any server, ensuring complete privacy. Your data never leaves your device.

Does FileSlim collect any personal data?

No, FileSlim does not collect, store, or transmit any personal information. We use anonymous analytics only to improve the service, with no personally identifiable data.

What data does FileSlim track?

FileSlim only tracks anonymous usage metrics like page views and feature usage. No file content, names, or personal information is ever collected or stored.

Does FileSlim share data with AI systems?

No personal user data, file content, or usage patterns are shared with AI systems. We only permit AI crawlers to index our public guides, tools, and SDK documentation through llms.txt.

What data does the FileSlim SDK collect?

The @fileslim/compress SDK collects zero data. It processes files entirely in the end user's browser with no telemetry, analytics, or server communication.

How Does FileSlim Protect Your Privacy?

Last updated: 8/30/2026

Basic Information

FileSlim is a file compression tool that works completely in your browser. We respect your privacy and protect your data.

File Processing

Local Processing: All your files are processed exclusively in your browser using WebAssembly. Files are never sent to our servers or any external services.

Security: Your files remain on your device at all times while using the application.

Storage: Files are not stored permanently. After closing the application or refreshing the page, all uploaded files are automatically removed from browser memory.

Supported Formats: Images (JPEG, PNG, WebP, AVIF), Documents (PDF, DOCX, PPTX, XLSX), Audio (MP3, WAV, M4A, FLAC, OGG), and Video (MP4, WebM, MKV, MOV). All formats are processed 100% client-side.

Personal Data

No personal data collection: The application does not require registration or entering personal information.

Anonymous usage: You can use FileSlim completely anonymously without providing any data.

Advertising data: For advertising purposes, anonymous identifiers and device information may be collected by our advertising partners.

IP address: Your IP address may be processed for ad serving and fraud prevention, but is not linked to your personal identity.

Device information: Basic device and browser information may be used to optimize ad delivery and application performance.

AI and Search Engine Access

AI crawlers: We permit AI search engines (GPTBot, ClaudeBot, PerplexityBot, etc.) to index our public guides, tools, and SDK documentation.

llms.txt: We publish a machine-readable file containing structured service information for AI systems.

No data sharing: No personal user data, file content, or usage patterns are shared with AI systems.

Privacy maintained: Your file processing remains completely private and local to your device, regardless of AI indexing.

SDK and Developer Integration

Client-side processing: When using @fileslim/compress, all file processing occurs in the end user's browser.

No telemetry: The SDK does not include any usage tracking or analytics.

No API keys: The SDK requires no authentication or external services.

Developer responsibility: Developers integrating the SDK are responsible for their own application's privacy practices.

Cookies and Local Storage

Essential cookies: The application may use basic technical cookies necessary for functionality.

Local storage: We may temporarily store compression settings in browser local storage for better user experience.

Advertising cookies: When using Google AdSense, third-party cookies may be placed to serve personalized advertisements.

Analytics cookies: We may use cookies to understand how users interact with our application to improve our services.

Third-party cookies: Our advertising partners may use cookies to track your activity across websites for ad personalization.

Cookie management: You can control cookie preferences through your browser settings or opt-out of personalized advertising.

Advertising and Third Parties

Google AdSense: We use Google AdSense to display advertisements. Google may use cookies and other tracking technologies to serve ads based on your interests.

Personalized advertising: Ads may be personalized based on your browsing history and preferences. You can opt-out of personalized advertising at any time.

Third-party partners: Our advertising partners may collect information about your visits to this and other websites to provide relevant advertisements.

Data sharing: We may share non-personal information with advertising partners to improve ad relevance and measure ad performance.

Your ad choices: You have control over the types of ads you see and can adjust your advertising preferences.

Your Choices and Control

You have control over your data and advertising experience:

• All files remain in your ownership and are processed locally
• You can delete browser local storage and cookies at any time
• You can opt-out of personalized advertising through Google Ad Settings
• You can disable cookies in your browser settings
• You can use ad blockers to prevent advertising cookies
• No personal data is transferred outside your device during file processing

Google Ad Settings: Visit Google Ad Settings to control personalized advertising preferences.

Browser settings: Use your browser's privacy settings to manage cookies and tracking.

Opt-out options: Visit the Digital Advertising Alliance or Network Advertising Initiative for additional opt-out choices.

Contact

If you have questions about privacy, you can contact us on our contact us.

For information about how Google uses data when you use our partners' sites or apps, visit:

How Google uses data when you use our partners' sites or apps

Google Privacy Policy and Google Ads Settings provide additional control over your advertising experience.Google Privacy Policy |Google Ads Settings