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 Windows Media Video (WMV) files to Audio Video Interleave (AVI) format seamlessly. This tool is essential for users who need to make Microsoft-native media compatible with older playback devices or specific editing software.
WMV is a proprietary container developed by Microsoft, primarily optimized for streaming and online playback, while AVI is a legacy container format that supports various codecs and is widely recognized by older hardware and software systems. During the conversion from WMV to AVI, the underlying data is repackaged. Since both formats are lossy, the process requires re-encoding the video stream, which can lead to a slight degradation of visual information despite the container change.
Because both WMV and AVI use lossy compression, re-encoding during conversion inevitably leads to a minor loss of quality. The file size generally remains similar as the video bitrates are typically preserved.
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
