NexusCompress · Image compressor FAQ
Answers about the free browser-based compressor — the same questions shown on the homepage accordion. Structured FAQ data lives on this URL only (not on /#photo-checker or other hash routes).
Frequently asked questions
How do I compress a JPEG without losing quality?
Use a quality setting between 75% and 85% for photos. For the web, try WebP or AVIF — they often beat JPEG at the same visual quality. See our JPEG compression guide and use the before/after slider before downloading.
Is it safe to upload my photos here?
Your photos are never uploaded. Compression runs in your browser with Web Workers; files stay on your device.
What is the best format to reduce image file size?
WebP for most sites (JPEG vs WebP), AVIF for smallest files where supported (AVIF vs WebP), JPEG for email, PNG for transparency.
Can I compress multiple images at once?
Yes. Drop multiple files or a folder, track progress per file, and download everything as a ZIP.
Does compressing remove EXIF or location data?
Re-encoding strips GPS, camera model, and timestamps. NexusCompress also corrects EXIF orientation automatically.
Is this tool really free?
Yes. Core compression is free with no account; processing runs entirely in your browser.