Guides
The image compression library
Short, practical guides on getting images smaller without wrecking them — written by the team behind a compressor that never uploads your files. No fluff, no invented statistics; just how these formats and techniques actually behave.
WebP vs AVIF vs JPEG: which image format should you use?
A practical comparison of WebP, AVIF and JPEG — file size, quality, transparency and browser support — with a simple rule of thumb for choosing the right image format.
3 min readQualityHow to compress images without losing quality
Learn the difference between lossless and visually lossless compression, which quality settings to use, and how to verify results so your images stay sharp while getting smaller.
2 min readPrivacyHow to compress images online without uploading them
Most online image compressors upload your files to their servers. Here's how in-browser (client-side) compression keeps sensitive photos on your device — and when it matters.
2 min readPrivacyHow to strip EXIF metadata from photos (and why it matters)
Photos quietly carry GPS coordinates, camera serials and more in their EXIF metadata. Learn what's inside, the privacy risks, and how to remove it before sharing.
2 min readPerformanceHow to reduce image file size for a faster website
Images are usually the heaviest part of a web page. Learn how file size affects Core Web Vitals and the practical steps — resize, format, compress, lazy-load — to speed up.
3 min readPrivacyNo sign-up image compressors — and which of them still upload your files
“No sign-up” and “no upload” are different promises. A comparison of what free compressors actually allow, using each vendor’s own published limits, plus how to verify where your file goes.
7 min readReady to try it? Compress your images privately in the browser — no upload, no sign-up.