# Diigo

> Bookmarking with highlights and sticky notes on web pages and PDFs

Diigo is a bookmarking and annotation service that has run since 2005. It saves web pages to a personal cloud library with tags, and its browser extension adds highlights and sticky notes to web pages and PDFs. Outliners arrange saved material into structured research, groups share a library with a class or team, and paid plans keep archived copies of bookmarked pages. The free plan is ad-supported and has low lifetime caps.

- **Category:** Read Later & Bookmarks
- **Made by:** Diigo, Inc. (since 2005)
- **Website:** https://www.diigo.com
- **Runs on:** Web, iOS, Browser extension
- **Facts last checked:** Oct 6, 2026

## Pricing

Diigo has a free plan. Paid plans start at $40 per year (Standard).

- **Pricing model:** Free plan
- **Free plan:** Free plan with ads, capped at 500 cloud bookmarks and 100 webpage and PDF highlights over the lifetime of the account.
- **Free trial:** The Business plan has a Try for free option; the pricing page does not state how long it lasts.

| Plan | Price | What you get |
| --- | --- | --- |
| Free | $0 | Ad-supported, with lifetime caps of 500 cloud bookmarks and 100 webpage and PDF highlights. |
| Standard | $40 per year | No ads, with unlimited bookmarks, highlights, image storage and cached pages, plus Kindle highlight import. |
| Professional | $59 per year | Everything in Standard, plus unlimited PDF storage and unlimited outliners. |
| Business | $10 per user / month (billing basis not stated) | Everything in Professional, plus an unlimited team library, collaborative web and PDF annotation in a team, and an admin console. |

Read from https://www.diigo.com/premium on Oct 6, 2026. Prices change, so confirm with Diigo before buying.

## Ways to pay less

- **Free teacher and student accounts** (Education): Teachers can apply for a free account with more capabilities than the normal free plan, including a Teacher Console for creating and managing student accounts. Schools can apply for an education domain. Source: https://www.diigo.com/education

## Key features

- **Bookmarks, tags and a personal library:** Saved pages go into a cloud library and are tagged for later retrieval. Each item can be set as private or public.
- **Highlights and sticky notes:** Highlight text and add sticky notes directly on web pages and PDFs while browsing; the annotations are still on the page when you come back to it.
- **Outliner:** Arrange links, references and your own notes into a structured outline for a piece of research. Unlimited outliners are part of the Professional plan.
- **Groups:** A group builds a shared library for a class, team or company that members can add to, search and discuss through annotations on the page.
- **Archived web pages:** Paid plans store cached copies of bookmarked pages with their annotations intact, so they stay readable if the original source goes offline.
- **Import, export and API:** The tools page lists bookmark and Kindle highlight import, library and PDF export, saving by email, automatic publishing to a blog and the Diigo API.

## Good for

- Students and researchers who annotate web pages and PDFs
- Teachers running class groups with managed student accounts
- Teams building a shared, annotated library of sources

## Worth knowing

- The Free plan shows ads and stops at 500 bookmarks and 100 highlights over the lifetime of the account.
- Cached pages and image storage start at Standard; unlimited PDF storage and outliners need Professional at $59 a year.
- Team library storage, collaborative annotation and the admin console are limited to Business at $10 per user a month.
- The tools page links to an Android app, but its Google Play listing returned a not-found page when checked.

## What people say

- **App Store rating of the iPhone and iPad app:** 4.5 out of 5 from 561 ratings in the United States, read Oct 6, 2026. This is the store's rating of the app, not a score from ToolGPA. Source: https://apps.apple.com/us/app/id933773981

## Works with

Kindle

**Tags:** Bookmarks, Highlights, Research, Public API

## Alternatives

- [Raindrop.io](https://toolgpa.com/tools/raindrop-io): Bookmark manager with collections, tags and highlights. [Compare](https://toolgpa.com/compare/diigo-vs-raindrop-io)
- [Pinboard](https://toolgpa.com/tools/pinboard): Paid bookmarking site with tags, privacy and page archiving. [Compare](https://toolgpa.com/compare/diigo-vs-pinboard)
- [Glasp](https://toolgpa.com/tools/glasp): Social web highlighter with AI summaries of videos and articles. [Compare](https://toolgpa.com/compare/diigo-vs-glasp)
- [Readwise](https://toolgpa.com/tools/readwise): Highlight library with a daily review and a read-later app. [Compare](https://toolgpa.com/compare/diigo-vs-readwise)
- [Linkwarden](https://toolgpa.com/tools/linkwarden): Open-source bookmark manager that preserves a copy of each page. [Compare](https://toolgpa.com/compare/diigo-vs-linkwarden)

## Sources

The prices, plans, platforms and features above were read from these pages on Oct 6, 2026:

- https://www.diigo.com/premium
- https://www.diigo.com/
- https://www.diigo.com/tools
- https://www.diigo.com/about
- https://www.diigo.com/education
- https://apps.apple.com/us/app/diigo-browser/id933773981

Page: https://toolgpa.com/tools/diigo
Listed by ToolGPA (toolgpa.com).