Guides & deep-dives.
Image compression, PDF tools, web performance, and privacy — written by engineers who build these tools.
What to Look for in a Private Image Compression Tool
A practical checklist for evaluating whether an online image tool is genuinely private — covering client-side processing, network requests, and data retention policies.
What Is Image Metadata? (And Why You Should Remove It Before Sharing)
Every photo you take contains hidden data: your GPS location, camera model, exact timestamp, and more. Here's what EXIF metadata is and how to strip it.
How to Safely Compress Sensitive PDF Documents
Bank statements, contracts, and medical records should never be uploaded to a third-party server. Here's how to compress them safely without leaving your device.
How to Check If an Online File Converter Is Safe
Not all online file converters handle your data the same way. Here's what to look for — and how to verify a tool is actually processing files in your browser.