AllConvert — Free Online File Converter
Free, private file converter — runs entirely in your browser
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conbottle

AllConvert — Free Online File Converter - Free, private file converter — runs entirely in your browser

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AllConvert converts images, documents, spreadsheets, PDFs, subtitles and more — entirely inside your browser. Nothing is ever uploaded to a server, so your files stay completely private. No account, no signup, no usage limits beyond your device's memory. Supports 100+ format pairs: PNG/JPG/WEBP/HEIC/AVIF/ICO/SVG, PDF to PNG/TXT, DOCX, XLSX/CSV/JSON/YAML, SRT/VTT subtitles, ZIP/GZIP and more. Batch-convert multiple files at once and download everything with one click.

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conbottle
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Hi Product Hunt! I built AllConvert because I kept needing to convert random files (HEIC photos, PDFs, CSVs) and didn't want to upload them to some random website that promises to "delete files after 1 hour." So everything runs 100% client-side — Canvas API for images, WASM/JS libraries for HEIC, PDF, DOCX and Excel parsing. Your file is read, converted and saved on your own device. Nothing ever touches a server. It currently supports 100+ conversion pairs across images, documents, spreadsheets, subtitles and data formats (JSON/CSV/XML/YAML), plus batch conversion for multiple files at once. It's completely free, no account required. Would love feedback — especially on which formats/features to prioritize next!