Any file up to 500 MB. Drop several files and they come back as one ZIP. Many image, audio and video conversions run in your browser; anything else is uploaded and removed within the hour.
Convert your QuickTime MOV files into the FLV format to ensure compatibility with legacy Flash-based video players. This tool provides a direct conversion for developers and webmasters needing to integrate video content into older web environments.
MOV is a proprietary Apple multimedia container often containing high-bitrate video, while FLV was specifically engineered for the Adobe Flash Player environment. Converting from MOV to FLV involves repacking the stream into the Flash-compatible structure. Because both formats rely on lossy compression techniques, the underlying video data undergoes re-encoding during the process.
Since both MOV and FLV use lossy compression, each conversion cycle introduces generational loss; keep the bitrate settings close to the source to minimize degradation.
We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.
Every converter on ConvertX is free to use: no trials, no premium tiers, and no credit packs. We will never put core conversion features behind a subscription. Whether you convert one photo or a hundred files a week, the price stays zero.
Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.
A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.
Clips, streams, screen recordings, and movies.
Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG
Raster and vector graphics for web, print, and photography.
Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF
Office files, PDFs, ebooks, and plain text.
Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT
Music, podcasts, voice recordings, and sound effects.
Common extensions: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS
