File Converter | Fernwork

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What this page does: Fernwork converters turn images, videos, audio, documents, spreadsheets and structured data between dozens of formats — JPEG, PNG, WebP, AVIF, GIF, MP4, MOV, MP3, WAV, FLAC, OGG, PDF, DOCX, ODT, RTF, EPUB, HTML, Markdown, XLSX, ODS, CSV, JSON, YAML, XML and more. Everything runs locally in your browser — 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, ODT, RTF, EPUB, PDF, HTML, Markdown, plain text.
Table converter — XLSX, XLS, ODS, CSV, TSV, JSON, NDJSON and HTML tables.
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, Tables and Data Formats