Simple and comfortably! Well done!

This is great. It uses firefox account to save all your speed dials.

Best Speed/Fast-Dial addon, and I guess I tried 'em all over time.

This one relies on non-commercial, non-proprietary tech and is transparent because you can handle the bookmarks in the standard Firefox bookmarks view.

Thumbnail refresh is rather slow, but I this might be a limitation of webextensions (it has to load the whole page in a new tab first).

Let's hope this one keeps being maintained - I'd like a "dark theme" with plain dark background.

Need a quick, large and wide Up Button. I hope the author will default to the following flexible style:

#pages {
display: flex !important;
flex-direction: wrap;
flex-wrap: wrap;
}
#pages > * {
padding: 3px 15px;
}
#upbutton {
flex-basis: 100%;
order: 2;
text-align: center;
font-size: 1.5em;
padding-top: 15px;
background: rgba(0, 0, 0, 0.15);
}
.delimiter,
.customdelimiter {
display: none !important;
}

/* Other */
body {
background: #a7a7a7!important;
}
.imgcontainer {
border-radius: 0px 0px 10px 10px;
}
.container table tr td {
border-radius: 10px 10px 10px 10px;
}
div[type="remove"] {
border-radius: 0px 10px 0px 0px;
}

Just try it, there's a surprise.

Yay. Missed SD from Opera, same functionality plus better having button than kludgey bm add in Opera. Happy you use bookmarks' thumbs as I use NoScript, so into privacy and no tracking. Plus SPEED which many add-ons forget.

Одна из немногих, настолько гибкая, и без лишних встроенных механизмов синхронизации, синхронизирует вкладки сам firefox, а приложение лишь отображает красиво.

Easy to configure and always in sync.
It would be nice to have the possibility to update ALL thumbnails automatically, not just all on one page.

Excellent, simple speed dial. can integrate with native bookmark.
NO NEED cookie & history permmision, 3rd party account for multi device sync!!

Is seems that Firefox 58 makes the extension unusable. The browser freezes when I open a new tab.

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Problem solved! It was the background image. Thanks!