offlinewebtools.com — free, watermark-free browser tools that stay on your device with nothing uploading to our servers

Format Converter Hub

Find and access all file format conversion tools in one place - images, videos, audio, PDFs, and more

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

All Format Converters

Browse our complete collection of file format conversion tools. All conversions happen locally in your browser - your files never leave your device.

Conversion Tips

  • Quality vs Size: Higher quality settings produce larger files. Balance based on your needs.
  • Format Choice: WebP and AV1 offer better compression than JPG and H264, but have less compatibility.
  • Lossless vs Lossy: FLAC and PNG are lossless (preserve quality), MP3 and JPG are lossy (smaller files).
  • Batch Processing: Most tools support multiple files for efficient bulk conversions.
  • Browser Performance: Large files may take time to process. Desktop browsers generally perform better.

Privacy & Security

100% Client-Side Processing: All file conversions are performed entirely in your browser using WebAssembly and JavaScript. Your files are never uploaded to any server, transmitted over the internet, or stored anywhere except your own device. This ensures complete privacy, security, and faster processing for most operations.

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.