File Converter | OnlineOffice

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What this page does: OnlineOffice converters turn images, videos, audio, documents and structured data between dozens of formats — JPEG, PNG, WebP, AVIF, GIF, MP4, MOV, MP3, WAV, FLAC, OGG, PDF, DOCX, HTML, Markdown, JSON, YAML, XML, CSV and more. Everything runs locally with FFmpeg.wasm and ImageMagick.wasm — no upload, no waiting in queue.

Image converter — JPEG, PNG, WebP, AVIF, GIF, BMP, TIFF, ICO.
Video converter — MP4, MOV, WebM, AVI, MKV, GIF (powered by FFmpeg.wasm).
Audio converter — MP3, WAV, FLAC, OGG, AAC, M4A.
Document converter — DOCX, PDF, HTML, Markdown, plain text.
Data converter — JSON, YAML, XML, CSV, TOML.
Batch processing with quality and resize controls.

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File Converter — Convert Images, Video, Audio, Documents and Data Formats