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PDFAnnotations VS Joplin

Compare PDFAnnotations VS Joplin and see what are their differences

PDFAnnotations

A local-first web tool to extract PDF highlights, notes, and comments directly into Obsidian, Notion, Markdown, CSV, and JSON. 100% offline and private.

Rating
0 reviews
Pricing
Open source Freemium $5.99 / Monthly (Pro)
Alternatives Is it good?
Joplin

Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.

Rating
0 reviews
Pricing
Open source Free
Alternatives Is it good?
Insightful.io
The precision Work Intelligence for actionable bottom line impact and #1 workforce analytics software that shows how work actually happens: get real-time and historical data, understand productivity at every level, track AI adoption across your org. sponsored

Which is more popular?

Based on our record, Joplin seems to be more popular. It has been mentioned 358 times since March 2021.

social mentions
0 vs 358
Notes popularity
1% vs 99%
alternatives listed
11 vs 240+

Base details

Website, pricing, platforms and company facts side by side.

PDFAnnotations
Joplin
Website pdfannotations.com joplinapp.org
Pricing
Open source Freemium $5.99 / Monthly (Pro) Official pricing
Open source Free Official pricing
Platforms
Web
—
Company Startup from the United States · 2026 Startup from Open Source/Community
Listed in
Note Taking Productivity Personal Productivity Task Management Todos Notes Design Tools PDF Tools PDF Editor Education PDF Readers And Editors +8
Note Taking Personal Notes Notes Knowledge Management +1

About PDFAnnotations and Joplin

In their own words, as submitted to SaaSHub.

PDFAnnotations
Joplin

What is PDFAnnotations? PDFAnnotations.com is a privacy-first, and browser-local web utility designed to extract highlights, comments, notes, and drawings from PDF files. It formats and exports this extracted data directly into structured notes for personal knowledge management (PKM) tools like...

Read more about PDFAnnotations

No description of Joplin yet.

Features and specs

What each product offers, as listed by its team.

PDFAnnotations 6 features
Joplin 6 features
  • Local First
    No registration, no uploads
  • Template Designer
    Fully customize how your annotations are formatted. Easily design color-coded native **Obsidian Callouts** or structured data formats using dynamic variables (`{{content}}`, `{{page}}`, `{{author}}`, `{{colorHex}}`, etc.).
  • Preserves Threaded Reply Chains
    Extracts and maintains the nested structure of comment replies (e.g., co-author reviews) along with page numbers, author names, and precise RGB colors
  • Advanced Filtering
    Interactively filter your annotations by highlight color, specific reviewer/author, page range, or annotation type (underlines, strikeouts, squiggly lines) before exporting
  • Multiple Export Options
    Seamlessly export your compiled annotations to Obsidian, Notion, Markdown (.md), CSV, JSON, or Plain Text (.txt)
  • Multi-Language Support
    11 UI languages support
  • Open Source
    Joplin is open source, which means the source code is freely available and can be modified or studied by anyone. This ensures transparency and provides the community with the ability to contribute to its development.
  • Cross-Platform
    Joplin is available on multiple platforms including Windows, macOS, Linux, Android, and iOS, which allows users to access their notes and to-dos across different devices.
  • End-to-End Encryption
    Joplin offers end-to-end encryption, ensuring that your notes and data are securely encrypted and only accessible by you.
  • Rich Text Support
    Joplin supports Markdown, which allows users to create notes with rich text formatting, including headers, lists, checkboxes, images, links, and more.
  • Synchronization Options
    Joplin provides multiple options for synchronization, including cloud services like Dropbox, OneDrive, and Nextcloud, enabling users to keep their data in sync across devices.
  • Resource Management
    Joplin allows users to attach files, images, and other resources to their notes, making it a versatile tool for managing different types of information.

Possible disadvantages

  • User Interface
    The user interface of Joplin can be less intuitive and visually appealing compared to other note-taking apps, which might lead to a steeper learning curve for new users.
  • Limited Collaboration
    Joplin is primarily designed for individual use and lacks extensive collaboration features found in other apps like Google Keep or Evernote, making it less suitable for team-based tasks.
  • No Native Web App
    Joplin does not have a native web app version, which can be a drawback for users who prefer accessing their notes through a browser without installing the desktop or mobile applications.
  • Sync Configuration
    Setting up synchronization options can be complex for some users, especially for those who are not familiar with cloud services or network configurations.
  • Resource Intensive
    Joplin can be resource-intensive, particularly when dealing with a large number of notes or attachments, which might affect performance on older devices.

Analysis

An editorial look at what each product does well and who it suits.

PDFAnnotations
Joplin

Overall verdict

  • PDFAnnotations appears to be a niche tool focused on enabling annotation and markup features for PDF documents, useful for collaborative review and document markup, though I lack comprehensive, verified data on its full performance, pricing tiers, and user satisfaction metrics.

Why this product is good

  • Provides dedicated tools for adding comments, highlights, and markup directly to PDF files
  • Likely simplifies collaborative review workflows without requiring full desktop PDF editing suites
  • May offer a more focused, lightweight alternative to bulkier PDF software for annotation-specific tasks
  • Web-based accessibility could allow annotation work across different devices without installation

Recommended for

  • Individuals or teams who primarily need PDF markup and commenting without full editing capabilities
  • Students or researchers annotating academic papers and documents
  • Professionals conducting document reviews who need a simple annotation-only tool
  • Users seeking a lightweight, focused alternative to comprehensive PDF editors

Overall verdict

  • Joplin is highly regarded among users who appreciate open-source software and need a versatile note-taking solution. Its extensive features, along with active community support, make it a strong contender in the productivity software space.

Why this product is good

  • Joplin is an open-source note-taking and to-do application with features such as synchronization across devices, support for rich-text and Markdown, and a web clipper for saving web pages and screenshots. It prioritizes user privacy and data ownership by allowing notes to be stored on local devices or using secure sync options like Nextcloud, Dropbox, or OneDrive. Additionally, Joplin supports end-to-end encryption to protect user data.

Recommended for

  • Users who prefer open-source applications
  • Individuals seeking a secure and privacy-focused note-taking app
  • People who need cross-platform compatibility
  • Users who want to organize notes using Markdown
  • Anyone looking for an alternative to mainstream note-taking apps

Videos

Walkthroughs and reviews on video.

PDFAnnotations 0 videos + Add
Joplin 3 videos + Add

No PDFAnnotations videos yet. You could help us improve this page by suggesting one.

Joplin, a free, open source, self hosted syncing note taking alternative to Evernote and OneNote..

More videos

  • - Joplin Is An Open Source Alternative To Evernote
  • - Joplin Desktop: Take Notes With A Rich Markdown Editor

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
PDFAnnotations
Joplin
1% 1%
Notes
99% 99%
0% 0%
Note Taking
100% 100%
100% 100%
Productivity
0% 0%
100% 100%
Education
0% 0%

Questions & Answers

As answered by people managing PDFAnnotations and Joplin.

What makes your product unique?

PDFAnnotations's answer

PDFAnnotations is unique because it operates 100% locally in the user's browser using WebAssembly. Unlike traditional extractors that require uploading sensitive documents to cloud servers, PDFAnnotations parses files completely offline. It also features a visual, interactive Template Designer that allows active readers to format their extracted highlights into custom native Markdown, Obsidian Callouts, or Notion blocks with complete metadata preservation.

Why should a person choose your product over its competitors?

PDFAnnotations's answer

A user should choose PDFAnnotations over competitors due to three key advantages: absolute data privacy, extreme cost efficiency, and deep note-taking integration. It requires no signup, no subscriptions, and no file uploads, serving as a robust free/freemium alternative to expensive cloud sync services like Readwise. Additionally, its "Sentence Mode" context preservation, multi-level comment reply extraction, and highly customizable formatting templates are specifically optimized for modern knowledge workers, which generic PDF readers do not support.

How would you describe the primary audience of your product?

PDFAnnotations's answer

The primary audience of PDFAnnotations consists of students, researchers, academics, legal professionals, and digital note-takers (PKM enthusiasts). It is designed specifically for active readers who frequently annotate academic papers, textbook PDFs, or legal contracts, and need a frictionless, secure way to move those highlighted concepts and reviewer comments into structured personal knowledge bases like Obsidian, Notion, or Logseq.

What's the story behind your product?

PDFAnnotations's answer

PDFAnnotations was born out of frustration. As researchers and avid readers, we found ourselves spending hours manually copying and pasting highlighted quotes and comments from PDF textbooks and research papers into our note-taking apps. Existing cloud-based tools either required expensive monthly subscriptions or forced us to upload confidential PDFs to external servers, violating our data privacy requirements. We decided to build a lightweight, browser-local, WebAssembly-powered tool that solves this friction instantly with zero security risks.

Which are the primary technologies used for building your product?

PDFAnnotations's answer

HTML5, TypeScript, WebAssembly (WASM) for lightning-fast client-side PDF parsing, and Tailwind CSS.

Who are some of the biggest customers of your product?

PDFAnnotations's answer

  • Independent researchers and academic scholars
  • Graduate and PhD students managing literature reviews
  • Legal professionals reviewing contract comments and redlines
  • Digital PKM (Personal Knowledge Management) enthusiasts
  • Avid book readers and self-learners

User comments

Share your experience with using PDFAnnotations and Joplin. For example, how are they different and which one is better?

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

PDFAnnotations no reviews yet
Joplin no reviews yet

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

PDFAnnotations 0 mentions
Joplin 358 mentions

Tracking PDFAnnotations since May 2026.

  • Show HN: Files.md – open-source alternative to Obsidian
    What is this providing over similarly Markdown based open source note taking applications like Joplin? (https://joplinapp.org/) I've been a huge fan of the fact that my backend sync infrastructure is my own self-hosted S3 bucket with... - Source: Hacker News / 5 months ago
  • An Introduction to Obsidian
    Shout out to Joplin (https://joplinapp.org/), which I use on a daily basis. It does most of what Obsidian does but has a free sync version where you just use your cloud drive as the storage. The main thing missing, from what I've found,... - Source: Hacker News / 6 months ago
  • Ditching Obsidian and building my own
    I use Joplin (https://joplinapp.org) on mobile and pc(windows and Linux). Joplin has a free encrypted sync via OneDrive. - Source: Hacker News / over 1 year ago

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Alternatives to PDFAnnotations and Joplin

When comparing PDFAnnotations and Joplin, you can also consider the following products.

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