Web Highlighter Tools and Extensions

A web highlighter can be a bookmark, an extension, a browser feature or a service with an account, and the right one depends on whether you want to point, mark or keep. This section explains each kind, compares the established products on the things that matter (anchoring, export, privacy, funding) and says which we would use in which situation.

None of the products named here paid to be included, there are no affiliate links anywhere on the site, and where our own tools are the right answer we say so, and where they are not we say that too. The extension comparison is the place to start if you want saved highlights. Text fragment links explained is the reference behind the generator.

Two shorter pieces round it out: what a bookmarklet is and how to read one before trusting it, and the difference between annotation layers and read-later apps, which explains most of the confusion people have about where their highlights went.

A word on what this section is not. It is not a directory of every highlighter ever published, and it is not ranked by stars. Each page answers one question a reader actually asks (should I install this, how does that link work, where did my highlights go) with enough detail to act on, and it is re-checked at every quarterly rebuild so the browser and product notes stay current.

For choosing between them, start from the job. To point at one passage you need nothing installed; to mark while you read, a bookmarklet is enough; to keep a library, compare the extensions and the read-later and annotation apps. The same tools are the backbone of checking a source's claims, and the text fragment reference explains why a highlight link makes good evidence.

A short guide to which page answers which question. "Can I trust this extension?" is answered by the safety checks in the extension comparison, which walk through the permissions an extension asks for before you install it. "Why did my link open at the wrong place?" is a text fragment question, and the known limits of text fragment links lists the cases where a browser cannot find the passage. "Is this one-line script safe?" is answered by how to read a bookmarklet before you trust it. "Where did my highlights go?" is usually the difference between a layer on the live page and a copy in an app, covered in the annotation layer versus read-later comparison. What the section leaves out on purpose: star ratings, sponsored placements and any tool we have not used ourselves.

Tools also decide whether your highlights outlive the app. The pages on highlights as a working record of your reading take the tools question one step further: once a highlight is saved, can you get it out with its source, its date and your note attached? Getting your highlights and notes out of an app as a dated file you own compares the export routes, and reading the provenance label on an image or an article covers the reader's side of authenticity: what a signed history of a file can and cannot tell you, and why a missing label proves nothing on its own. Neither page asks you to change tools; both start from the highlights you already have.

How this connects to the record section: a tool that stores your highlights is holding your provenance trail, the dated chain from a claim back to the page you read it on. Keeping digital evidence of what a web page said, with archives and provenance compares screenshots, archived copies and highlight links as evidence, and using a document's version history as an authorship record covers the same question for the drafts you write from those highlights.