Bonus strips added when a comic/WebComic is published as a book. A SubTrope of BonusMaterial. See also SideStoryBonusArt.
* The first ''Webcomic/TheAdventuresOfDrMcNinja'' book has AltText (first introduced in the second issue) added for the first issue. The third book has a short story starring the side character "The Beeman".
* The ''[[Webcomic/TheOrderOfTheStick Order of the Stick]]'' books tend to do this (not counting the two print only stories). For example: ''Dungeon Crawling Fools'' has a set of new comics introducing the characters better than the cast page on the website. Lampshaded in-story twice. Once when characters suggest they add an unseen bit of action as bonus content for the next book and when Haley is suffering under a speech-impediment that turns all her speech into cryptograms, she can still communicate with The Oracle. When asked, he says that no, he doesn't understand her - he just has the power to look into the future, for when the strips are released in book-form with translations attached. The strip has also had a ''parody'' lampshading after a character was sent to a particularly stupid [[TrappedByMountainLions offscreen waiting room]], [[LevelAte The Semi-Elemental Plane of Ranch Dressing]]:
-->'''Belkar:''' Hey, maybe we'll see that as a bonus story in one of the later books!\\
'''Vaarsuvius:''' [[LetUsNeverSpeakOfThisAgain Maybe we will never mention it again.]]
* Several ''ComicStrip/CalvinAndHobbes'' collections are prefaced with bonus stories and poems done in watercolor:
** ''The Essential Calvin & Hobbes'' had the story poem "A Nauseous Nocturne."
** ''The Indispensable Calvin & Hobbes'' had several short poems.
** ''The Authoritative Calvin & Hobbes'' had a story in which Calvin, while doing his homework, decides to boost his memory by transmogrifying himself into an elephant.
** ''The Calvin & Hobbes Lazy Sunday Book'' had a story in which Spaceman Spiff fights a Booger Being (Susie Derkins) and a Naggon (Calvin's mom).
** ''The Tenth Anniversery Collection'' had author commentary next to each strip.
* ''Webcomic/SamAndFuzzy'' had an extra story and some [[{{Omake}} Skull Panda]] strips in its first mini-book, and probably similar in the newer ones, but I haven't read them.
* Some of the ''Webcomic/GirlGenius'' collected editions have extra story pages, to clarify details and/or to make sure that the big double-page spreads end up on facing pages.
* There is a new extra comic included in one of the ComicBook/XWingSeries [[{{Anthology}} Omnibus]] collections, about Wedge being a DestructiveSavior and Luke defending him from angry townspeople.
* Both ''Webcomic/ElGoonishShive'' books have an additional silly story and a PostEpisodeTrailer.
* The ''Webcomic/SluggyFreelance'' [[ collected volumes]] contain these. The character of Deplora was actually introduced in one of these bonus stories before being brought into the main strip.
* The ''WebComic/AxeCop'' book, in addition to publishing every episode of the webcomic released up to that point, includes commentary from Ethan on the ''Ask Axe Cop'' strips, plus fanart.
* ''Webcomic/TeaHouse'' does cleverly: it lures potential readers by promises of [[{{Yaoi}} yummy mansex]], traps them by a captivating plot, and rakes in the chips by keeping the great majority of the smut as well as some extra strips print-only.
* ''Manga/DailyLivesOfHighSchoolBoys'' is not strictly a webcomic; it is published in an free-for-view commercial online anthology which operates like traditional Japanese AnthologyComic. However, like the examples above, when this free-to-view online manga is collected into printed volumes, additional skits, i.e. ''High School Girls are Funky'', were added. It is remarkable to note that ''High School Girls are Funky'' is the only thing in this series that has a long-term plot.
* ''Webcomic/{{Homestuck}}'' has the author's commentary at the bottom of each page.
* ''Webcomic/PennyArcade'' collections include author commentary from strip author Jerry Holkins, select newspost reprints that provide either additional insight into the strip or entertainment and the occasional artwork or even whole strips that were either unused, unavailable or only shown in the posts.
* ''Webcomic/MenageA3'' and its spinoffs, ''Webcomic/StickyDillyBuns'' and ''Webcomic/SandraOnTheRocks'', always include a few extra story strips in the print collections, generally filling in some side-details of the main plots.
* All but one of the ''Webcomic/SchlockMercenary'' books contain a bonus story. These mostly serve to fill in backstory for some of the characters (in particular Schlock himself) or form an epilogue showing what happened to some of the secondary characters after the main plot of the book.