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 AVI video files to the FLV format quickly and securely. This tool is designed for users who need to prepare legacy video content for web-based Flash players.
AVI (Audio Video Interleave) is a classic container developed by Microsoft, often used for uncompressed or high-bitrate video storage. FLV (Flash Video) is a container specifically optimized for internet streaming via Adobe Flash Player. When converting from AVI to FLV, the underlying stream is repackaged or re-encoded to fit the structure required for Flash-based delivery, while the overall file size remains largely consistent due to the nature of these legacy codecs.
Since both AVI and FLV are lossy formats, the process of re-encoding will inevitably lead to a slight loss in visual fidelity.
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
