Which outliners or PIM's or personal wiki programs have the best web-clipper features?

Great topic, but I think what counts as "best" depends on your needs. I use a number of different options depending on what I'm doing.

PDF replica of page: FireShot (a Chrome extension). I save to DevonThink (which has its own clipper that is useful if you want a stripped down version of the page without distractions.)

Highlights from page: either save to Instapaper or use hypothes.is directly on the page. (These then both get pulled to Obsidian via Readwise.io)

Markdown text of page: MarkDownload (a Chrome extension). Note: Instapaper can also copy the plain text version of an article to the clipboard.

If I don't want a replica (in which case I would also use Fireshot) but just the contents correctly formatted, I use Evernote. It has web clipper extensions for most browsers.

Interestingly, at least in Windows, the Evernote web clipper shortcut on the browser bar provides more options than right-clicking in the content, including clip Article and Simplified Article which both work well in most websites.

Even more interestingly (euphemistically speaking) the clip Selection which is available via both right-clicking and the shortcut, works differently depending on how it is summoned. This is usually a nuisance, but can actually be good in certain websites, where one works better than the other.

MyInfo also published a new web extension recently:
https://www.myinfoapp.com/features/webclipper

Looks comparable to Evernote's one.

Luhmann wrote:

Great topic, but I think what counts as "best" depends on your needs. I
use a number of different options depending on what I'm doing.

Agreed. I often want the content, with clickable links, and OCRed text that I can highlight (for Zotero). No so much the actual layout of the page.

PDF replica of page: FireShot (a Chrome extension). I save to DevonThink
(which has its own clipper that is useful if you want a stripped down
version of the page without distractions.)

I have tried several options. FireShot is good, it saves the page as an image so the file size can get big. Other extensions (in Firefox, probably also for Chrome) are PDFMyURL and PrientFriendly. I tend to try different ones to see which generates the best result.

Markdown text of page: MarkDownload (a Chrome extension). Note:
Instapaper can also copy the plain text version of an article to the
clipboard.

I have found that copying the text that I want to copy and pasting it into UpNote gives a clean markdown page. As a bonus, UpNote has a good export to PDF, so you get a clean PDF page if you want one. There's a web clipper for UpNote that has just been released, but it's not fully functional yet.

HTML: InfoQube has an HTML web clipper. It can get stuck on very heavy pages. Copying text and pasting it into the doc pane is also a good way to get an HTML copy of the page.

I use RightNote for this (and everything else)

Thanks for these suggestions. I've tried RightNote and Joplin. RightNote is usually pretty good, but it sometimes has trouble with columns and pictures. Joplin's Firefox extension - which it admits is a beta - is all over the map in terms of performance, sometimes good and sometimes really bad. It would be useful if there was a single piece of software that worked equally well with all web-pages, but I suspect there is too much difference in the way pages are designed.

If you use Firefox: Give the SingleFile extension a try. It packs all the content of a web page into a single HTML file (that can be opened using any web browser). I haven't seen a web page that SingleFile was not able to capture correctly.

There are several nice options on macOS: Bear, Quiver, UpNote all have great clippers (Bear’s is especially good).

It’s also worth checking out the Evernote clipper (available for most browser platforms), which is pretty good.

Thank you for recommending the SingleFile extension - it works great! I'm going to use it to store html pages directly in TheBrain (with all page content indexed!)

Franz Grieser wrote: "Give the SingleFile extension a try."

Interesting: Joplin and UpNote also have Firefox extensions. I too have installed SingleFile!

The webclipping tool in Trilium is outstanding.

I relied exclusively on MyInfo for years and find it indispensable. But it no longer runs properly in WINE in Linux and the MyInfo webclipping tool cannot match that of Trilium.
At least not now.

Trilium seems oddly under-used, but I have found it very impressive indeed.

There are recent posts in Devonthink's forums about some pending fixes their web clipping features. Right now, tags added to web clippings don't get saved. The next minor release has the fix.

Anyway, out of curiosity I looked at the bookmark document type in Devonthink. It's like a document, except that when you select it a web browser opens the page in Devonthink's preview area. I had never used that ability.

It's really nice. I've always thought Devonthink looks plain and industrial, but that's never bothered me. It works so well.

I've got a large inventory of shortcuts. I think I'll start moving them to Devonthink, where I can either surf them in-app, or open them externally.

+1 SingleFile

Just wanted to point out it's available on Chrome (and Edge) as well: https://chrome.google.com/webstore/detail/singlefile/mpiodijhokgodhhofbcjdecpffjipkle?hl=en

Zotero Beta now uses it to store web pages as well.

There are so many. I think it depends on what you need. Cross platform, Evernote and Firefox's SingleFile extensions work very well. On the Mac, EagleFiler and Yojimbo are good options.