Showing 237 open source projects for "pdf metadata viewer"

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  • 1
    Pdf Viewer For Android

    Pdf Viewer For Android

    A Lightweight PDF Viewer Android library

    A Simple PDF Viewer library which only occupies around 80kb while most of the Pdf viewer occupies upto 16MB space. Hello Developers! We're thrilled to share some significant enhancements we've made to our PDF viewer library. We've fine-tuned several aspects to enhance your experience and ensure top-notch performance and security. Step into the future with Jetpack Compose compatibility.
    Downloads: 3 This Week
    Last Update:
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  • 2
    OpenDataLoader PDF

    OpenDataLoader PDF

    PDF Parser for AI-ready data. Automate PDF accessibility

    OpenDataLoader PDF is an open-source document processing system designed to convert complex PDF files into structured, AI-ready formats such as Markdown, JSON, and HTML while preserving layout, hierarchy, and semantic meaning. It focuses on enabling downstream use cases like retrieval-augmented generation (RAG), knowledge extraction, and document intelligence pipelines by maintaining accurate reading order and spatial metadata through bounding boxes.
    Downloads: 7 This Week
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  • 3
    PDF Signature

    PDF Signature

    Free web software for signing PDFs and also organize pages

    Free web software for signing, organizing, editing metadatas or compressing PDFs.
    Downloads: 3 This Week
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  • 4
    Zotero PDF Translate

    Zotero PDF Translate

    Translate PDF, EPub, webpage, metadata, annotations, notes

    Zotero PDF Translate is a plugin for Zotero that enhances the research workflow by enabling in-app translation of PDFs, EPUBs, webpages, and associated metadata directly within the Zotero interface. It integrates seamlessly with Zotero’s document reader, allowing users to select text and instantly receive translations in a pop-up or side panel without leaving the application.
    Downloads: 16 This Week
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  • 5
    PDF.js

    PDF.js

    A PDF Reader in JavaScript

    PDF.js is a web standards-based platform for parsing and rendering Portable Document Formats (PDFs). Open source and built with HTML5, this PDF viewer is supported by a great community and Mozilla Labs. PDF.js can be used on both modern and older browsers, and is built into version 19+ of Firefox.
    Downloads: 87 This Week
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  • 6
    Nano PDF Editor

    Nano PDF Editor

    Edit PDF files with Nano Banana

    Nano PDF Editor is a minimalist, portable PDF viewer and toolkit that focuses on simplicity, speed, and ease of integration for applications that need basic PDF rendering without heavy dependencies. It provides core functionality such as page navigation, zooming, text selection, and rendering directly to native graphics surfaces, making it suitable for lightweight PDF viewing scenarios on desktop or embedded platforms.
    Downloads: 16 This Week
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  • 7
    PDFPatcher

    PDFPatcher

    A versatile toolkit for PDF manipulation

    ...Modify PDF metadata, page numbers, links, initial view mode, and remove open actions.
    Downloads: 57 This Week
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  • 8
    Beads Viewer

    Beads Viewer

    Task management system for coding agents

    Beads Viewer is a visualization tool designed to display, inspect, and interact with “bead plots,” graphical representations often used in statistical analysis, time series exploration, or clustering visualizations where data points are represented as beads on strands or axes to emphasize patterns and relationships. The viewer provides an intuitive graphical interface that automatically renders bead plots from structured data inputs, enabling users to observe trends at a glance, highlight...
    Downloads: 3 This Week
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  • 9
    PDFCraft

    PDFCraft

    PDFCraft is a free, privacy-focused PDF toolkit

    PDFCraft is an extensible toolkit for creating, editing, and transforming PDF documents with both a graphical interface and a scripting API, making it useful for users ranging from casual editors to automated document processors. At its core, the project provides a clean, modern UI where you can rearrange pages, annotate text, insert images, fill forms, and export to multiple formats, all without needing a heavyweight commercial PDF suite.
    Downloads: 19 This Week
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  • 10
    PyMuPDF

    PyMuPDF

    Python bindings for MuPDF's rendering library.

    ...The viewer is small, fast, yet complete. It supports many document formats, such as PDF, XPS, OpenXPS, CBZ, EPUB, and FictionBook 2. You can annotate PDF documents and fill out forms with the mobile viewers (this feature is coming soon to the desktop viewer as well). The command line tools allow you to annotate, edit, and convert documents to other formats such as HTML, SVG, PDF, and CBZ.
    Downloads: 16 This Week
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  • 11
    SumatraPDF Reader

    SumatraPDF Reader

    Multi-format (PDF, EPUB, MOBI, FB2, CHM, XPS, DjVu) reader for Windows

    Sumatra PDF is a free PDF, eBook (ePub, Mobi), XPS, DjVu, CHM, Comic Book (CBZ and CBR) viewer for Windows. Sumatra PDF is powerful, small, portable and starts up very fast. Simplicity of the user interface has a high priority. Portable version is a single executable, can be run from USB drive and doesn't write to registry. For best results use the latest release available as that's what I use and test with.
    Downloads: 71 This Week
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  • 12
    KOReader

    KOReader

    An ebook reader application supporting PDF, DjVu, EPUB, FB2, etc.

    KOReader is a document viewer for E Ink devices. Supported fileformats include EPUB, PDF, DjVu, XPS, CBT, CBZ, FB2, PDB, TXT, HTML, RTF, CHM, DOC, MOBI and ZIP files. It’s available for Kindle, Kobo, PocketBook, Android and desktop Linux. Runs on embedded devices (Cervantes, Kindle, Kobo, PocketBook, reMarkable), Android and Linux computers. Developers can run a KOReader emulator in Linux and MacOS.
    Downloads: 130 This Week
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  • 13
    MinerU

    MinerU

    A high-quality tool for convert PDF to Markdown and JSON

    MinerU is an open-source, high-quality document extraction toolkit focused on converting PDFs (and other document formats) into structured Markdown and JSON. It leverages OCR and layout analysis to preserve semantic structure and metadata, ideal for research and data science workflows.
    Downloads: 10 This Week
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  • 14
    pdfmake

    pdfmake

    Client/server side PDF printing in pure JavaScript

    ...Provides a set of options to disable font layout cache and to control when pages are flushed to the output file. Pdfmake is runnable in browser (client-side) and in Node.js (server-side). PDF name can be defined only by using metadata title property. Add-ons used in browsers can affect the functionality of pdfmake (especially for open() and print()). If pdfmake is not working try disable add-ons in browser. The supported browsers are Internet Explorer 10+, Edge 12+, Firefox, Chrome, Opera and Safari.
    Downloads: 10 This Week
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  • 15
    Vanilla.PDF

    Vanilla.PDF

    Cross-platform SDK for creating and modifying PDF documents

    ...Vanilla.PDF supports advanced PDF features such as adding CMS (PKCS#7) digital signatures, modifying content streams and metadata, and working with encryption and permissions based on standard PDF security models. It includes tools for parsing PDF internals like cross-reference tables and objects, providing fine-grained document analysis capabilities. The project is unit-tested with continuous integration pipelines, supporting sanitizers for enhanced code quality and stability.
    Downloads: 3 This Week
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  • 16
    pandoc-crossref filter

    pandoc-crossref filter

    Pandoc filter for cross-references

    pandoc-crossref is a pandoc filter for numbering figures, equations, tables and cross-references to them. The input file (like demo.md) can be converted into HTML, LaTeX, PDF, Markdown or other formats. Optionally, you can use cleveref for LaTeX/PDF output, e.g. cleveref PDF, cleveref LaTeX, and listings package, e.g. listings PDF, listings LaTeX. This package tries to use LaTeX labels and references if output type is LaTeX. It also tries to supplement rudimentary LaTeX configuration that should mimic metadata configuration by setting header-includes variable. ...
    Downloads: 14 This Week
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  • 17
    TeXworks

    TeXworks

    A simple interface for working with TeX documents

    TeXworks is a free and simple working environment for authoring TeX (LaTeX, ConTeXt and XeTeX) documents. Inspired by Dick Koch's award-winning TeXShop program for Mac OS X, it makes entry into the TeX world easier for those using desktop operating systems other than OS X. It provides an integrated, easy-to-use environment for users on other platforms particularly GNU/Linux and Windows and features a clean, simple interface accessible to casual and non-technical users.
    Downloads: 73 This Week
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  • 18
    PyPDF

    PyPDF

    A pure-python PDF library capable of splitting, merging, cropping

    pypdf is a pure Python library for working with PDF files, allowing developers to split, merge, rotate, encrypt, and extract content from PDFs. It’s an actively maintained fork of PyPDF2, improving performance, compatibility, and support for modern PDF standards. Suitable for both automation scripts and full-featured applications, pypdf handles PDFs without requiring external dependencies.
    Downloads: 5 This Week
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  • 19
    AviTab

    AviTab

    X-Plane plugin that displays a tablet to aid VR usage

    AviTab is a plugin for the X-Plane flight simulator. It displays a tablet-like computer with a few apps in the cockpit. It is mainly used for flying in virtual reality. When flying in a simulator, one often needs to look up details in PDF charts, plane manuals, checklists or other documents. Using a PDF reader breaks the immersion because the virtual aviator either has to take off of their HMD or use other tools that can move windows into VR. AviTab tries to solve this problem by offering a...
    Downloads: 49 This Week
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  • 20
    Komga

    Komga

    Media server for comics/mangas/BDs/magazines/eBooks with API and OPDS

    A media server for your comics, mangas, BDs, magazines, and eBooks. Organize your CBZ, CBR, PDF, and EPUB files in different libraries, collections, or reading lists. Use the integrated Webreader, the Tachiyomi extension, any OPDS reader, or other integrations.
    Downloads: 7 This Week
    Last Update:
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  • 21
    Advanced PDF Reader

    Advanced PDF Reader

    A modern, professional and advanced PDF reader

    A modern, professional PDF reader and annotator for Windows, built with Tkinter and PyMuPDF. Inspired by Adobe Photoshop, with a dark theme, responsive UI, annotation tools, and form fill support.
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    Downloads: 85 This Week
    Last Update:
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  • 22
    Pandoc

    Pandoc

    The universal markup converter

    Pandoc is a universal document converter able to convert files from a multitude of markup formats into another. With Pandoc, you have a swiss-army knife of a converter, able to convert practically any markup format into any other. Pandoc contains a Haskell library for conversions as well as a command-line tool that uses this library. It can convert to and from just about anything-- lightweight markup formats, HTML formats, documentation formats, ebooks, TeX formats, word processor formats...
    Downloads: 268 This Week
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  • 23
    Kavita

    Kavita

    Kavita is a fast, feature rich, cross platform reading server

    ...Quickly resume your reading from your homepage, and get to your reading lists and collections. Serve up Manga/Webtoons/Comics (cbr, cbz, zip/rar, 7zip, raw images) and Books (epub, pdf). First-class responsive readers that work great on any device (phone, tablet, desktop). Dark mode and customizable theming support. Provide hooks into metadata providers to fetch metadata for Comics, Manga, and Books. Metadata should allow for collections, want-to-read integration from 3rd party services, genres. Ability to manage users, access, and ratings.
    Downloads: 8 This Week
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  • 24
    GROBID

    GROBID

    A machine learning software for extracting information

    ...The extraction here covers the usual bibliographical information (e.g. title, abstract, authors, affiliations, keywords, etc.). References extraction and parsing from articles in PDF format, around .87 F1-score against on an independent PubMed Central set of 1943 PDF containing 90,125 references, and around .89 on a similar bioRxiv set of 2000 PDF (using the Deep Learning citation model). All the usual publication metadata are covered (including DOI, PMID, etc.).
    Downloads: 3 This Week
    Last Update:
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  • 25
    Image Toolbox

    Image Toolbox

    Image Toolbox is an powerful picture editor, which can crop

    Image Toolbox is a powerful picture editor, which can crop, apply filters, add some drawings, erase background, edit EXIF, or even create a PDF file.
    Downloads: 28 This Week
    Last Update:
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