Self-hosted projects tagged “File Conversion”

Calibre is a cross-platform e-book manager to organize libraries, edit and convert formats, fetch metadata, and sync content to e-readers.

GPL-3.0Actively maintained

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Adobe Digital Editions+3

Self-hostable tool to convert non-DRM eBooks into audiobooks with chapter support, metadata, multilingual TTS engines, and optional voice cloning via a web UI or CLI.

Apache-2.0Actively maintained

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Speechify+7

ConvertX is a self-hosted web file converter supporting 1000+ formats across documents, images, audio/video, ebooks, and 3D assets, with multi-file processing and accounts.

AGPL-3.0Actively maintained

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CloudConvert+7

WebAssembly-powered on-device file converter built with Svelte and TypeScript, enabling offline, privacy-first conversions.

Gotenberg is a containerized HTTP API that converts HTML, Markdown, and Office documents to PDF using engines like Chromium and LibreOffice, with options to merge and automate outputs.

MITActively maintained

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PDFShift+9

OmniTools is a self-hosted web app providing browser-based utilities for images, video, PDF, text, date/time, math, and data formats, with client-side processing.

MITActively maintained

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iLovePDF+7

CLI tool that orchestrates yt-dlp and FFmpeg with YAML presets to download, convert, tag, and organize media for Plex, Jellyfin, Kodi, Emby and music players.

GPL-3.0Actively maintained

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4K Video Downloader+6

Self-hosted image optimizer that compresses and converts images locally in your browser, works offline, and keeps files private with on-device processing.

GPL-3.0Actively maintained

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Convertio+6

Self-hosted web UI for file conversion, OCR for PDFs/images, and local Whisper-based audio transcription, wrapping common CLI tools with background jobs and history.

MITSlowing down

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CloudConvert+15

Open-source platform for guided web interviews that collect user input, run logic, and generate documents (PDF, DOCX, RTF) or integrate with external services via APIs.

MITActively maintained

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Formstack+19

Self-hosted web app for signing PDFs (single or multi-signer), organizing pages (merge/rotate/extract), editing PDF metadata, and compressing files.

AGPL-3.0Actively maintained

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Docusign+19

Self-hosted collaborative office suite for Nextcloud providing real-time editing, high-fidelity rendering and support for DOCX, XLSX, PPTX and ODF formats.

Actively maintained

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Collabora Online+11

A high-performance, URL-based image transformation service written in Go, enabling on-the-fly resizing, format changes, and CDN-friendly delivery.

MITSlowing down

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Mapbox+1

Self-hosted workflow automation for media and file libraries—watch folders, run FFmpeg/metadata steps, and route outputs with a visual flow builder.

Activity unknown

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FileFlows Cloud+8