Compress & Convert
Video, Image & Audio

Supported Formats

Powered by FFmpeg — supports 100+ media formats.

Frequently Asked Questions About LocalSquash

Quick answers about privacy, file limits, supported formats, and how browser-based compression works.

Is LocalSquash really free to use?

Yes. LocalSquash is free to use with no subscriptions, premium tiers, watermarks, or account requirements. Privacy-focused file tools should be straightforward and accessible.

How does browser-based compression and conversion work?

Compression and conversion happen on your device. LocalSquash runs FFmpeg compiled to WebAssembly (WASM) in your browser, so files are processed locally instead of being uploaded to a server. This applies to both compression and format conversion.

What file types can I compress and convert with LocalSquash?

LocalSquash supports most common media formats and many other formats FFmpeg can decode. Video inputs include MP4, MOV, WebM, AVI, MKV, WMV, and FLV, with MP4 output. Image inputs include JPEG, PNG, WebP, HEIC, TIFF, BMP, GIF, and many camera formats, with WebP, JPEG, or PNG output. Audio inputs include MP3, WAV, FLAC, AAC, OGG, Opus, M4A, and AIFF, with MP3, AAC, or Opus output.

How much can I reduce my file size?

File size reduction varies by file type and settings, but typical results are 50-95% smaller files. Videos often achieve 70-90% reduction, images 50-80%, and audio 60-90%. The compression is adjustable so you can balance quality vs. file size.

Is there a file size limit?

There are no artificial limits. The only constraint is your device's available memory (RAM). For most modern devices, files up to 2GB work well. Larger files may be slower or require more RAM.

Can I use LocalSquash offline?

Yes! After the initial page load, LocalSquash works completely offline. The FFmpeg WebAssembly module is cached in your browser, allowing you to compress files without an internet connection.

Why should I use LocalSquash instead of other compressors?

The main difference is local processing. LocalSquash keeps files on your device, avoids upload and download delays, works offline after the initial load, and skips server-side file caps.

Is LocalSquash safe and secure?

Yes. LocalSquash is safe because your files stay on your device and are not uploaded to our servers. That local-first workflow reduces privacy risk for sensitive photos, videos, and recordings.