diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 0000000000..9a5a18683d
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1,3 @@
+github: [yihui]
+patreon:
+custom:
diff --git a/.github/ISSUE_TEMPLATE/bug-report.md b/.github/ISSUE_TEMPLATE/bug-report.md
index 0bb45c5e19..e9d1b23f93 100644
--- a/.github/ISSUE_TEMPLATE/bug-report.md
+++ b/.github/ISSUE_TEMPLATE/bug-report.md
@@ -7,7 +7,7 @@ assignees: ''
 ---
 
 <!--
-Welcome to the rmarkdown GitHub repo!
+Welcome to the rmarkdown GitHub repo !
 
 We are always happy to hear feedback from our users. 
 
@@ -31,4 +31,5 @@ When filing a _bug report_, please check the boxes below to confirm that you hav
 
 - [ ] upgraded all your packages to their latest versions (including your versions of R, the RStudio IDE, and relevant R packages)?
 
-- [ ] installed and tested your bug with the development version of the rmarkdown package using `remotes::install_github("rstudio/rmarkdown")`?
+- [ ] installed and tested your bug with the development version of the rmarkdown package using `remotes::install_github("rstudio/rmarkdown")` ?
+
diff --git a/.github/ISSUE_TEMPLATE/config.yml b/.github/ISSUE_TEMPLATE/config.yml
index 976adb8d09..d839cb485a 100644
--- a/.github/ISSUE_TEMPLATE/config.yml
+++ b/.github/ISSUE_TEMPLATE/config.yml
@@ -3,8 +3,8 @@ contact_links:
   - name: Issue guide
     url: https://yihui.org/issue/
     about: First time here or need a refresh? Please consult the issue guide before posting.
-  - name: Ask a question on RStudio Community
-    url: https://community.rstudio.com/c/r-markdown/10
+  - name: Ask a question on Posit Forum
+    url: https://forum.posit.co/
     about: Please ask and answer questions here.
   - name: Ask a question on Stack Overflow
     url: https://stackoverflow.com/questions/tagged/r+r-markdown
diff --git a/.github/ISSUE_TEMPLATE/feature-request.md b/.github/ISSUE_TEMPLATE/feature-request.md
index 4eebb8ba60..4481a0e176 100644
--- a/.github/ISSUE_TEMPLATE/feature-request.md
+++ b/.github/ISSUE_TEMPLATE/feature-request.md
@@ -8,7 +8,7 @@ assignees: ''
 
 <!--
 
-Welcome to the rmarkdown GitHub repo 👋
+Welcome to the rmarkdown GitHub repo !
 
 Thanks for taking the time to file a feature request! Please start by searching for an existing feature request to avoid creating duplicate requests. If you find an existing feature request, please give it a thumbs-up reaction, as we'll use these reactions to help prioritize the implementation of these features in the future.
 
diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index f610626dbf..4df14ebc92 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -30,10 +30,11 @@ jobs:
       matrix:
         config:
           # testing R release with last shipped pandoc version in RStudio IDE and new pandoc
-          - {os: windows-latest, pandoc: '3.1.6.2',  r: 'release'}
-          - {os: macOS-latest,   pandoc: '3.1.6.2',  r: 'release'}
+          - {os: windows-latest, pandoc: 'latest',  r: 'release'}
+          - {os: macOS-latest,   pandoc: 'latest',  r: 'release'}
           - {os: ubuntu-latest,  pandoc: 'devel',    r: 'release'}
           # testing older pandoc versions
+          - {os: ubuntu-latest,  pandoc: '3.1.11',   r: 'release'}
           - {os: ubuntu-latest,  pandoc: '2.19.2',   r: 'release'}
           - {os: ubuntu-latest,  pandoc: '2.18',     r: 'release'}
           - {os: ubuntu-latest,  pandoc: '2.17.1.1', r: 'release'}
@@ -43,15 +44,18 @@ jobs:
           - {os: ubuntu-latest,  pandoc: '2.7.3',    r: 'release'}
           - {os: ubuntu-latest,  pandoc: '2.5',      r: 'release'}
           # testing other R versions
-          - {os: ubuntu-latest,  pandoc: '2.11.4',   r: 'devel', http-user-agent: 'release'}
-          - {os: ubuntu-latest,  pandoc: '2.11.4',   r: 'oldrel-1'}
-          - {os: ubuntu-latest,  pandoc: '2.11.4',   r: 'oldrel-2'}
-          - {os: ubuntu-latest,  pandoc: '2.11.4',   r: 'oldrel-3'}
+          - {os: ubuntu-latest,  pandoc: 'latest',   r: 'devel', http-user-agent: 'release'}
+          - {os: ubuntu-latest,  pandoc: 'latest',   r: 'oldrel-1'}
+          - {os: ubuntu-latest,  pandoc: 'latest',   r: 'oldrel-2'}
+          - {os: ubuntu-latest,  pandoc: 'latest',   r: 'oldrel-3'}
 
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
       R_KEEP_PKG_SOURCE: yes
 
+    permissions:
+      actions: read
+
     steps:
       - uses: actions/checkout@v3
 
diff --git a/DESCRIPTION b/DESCRIPTION
index 1b009ffeb8..b9ce46ccb6 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Type: Package
 Package: rmarkdown
 Title: Dynamic Documents for R
-Version: 2.25.2.9000
+Version: 2.27.1.9000
 Authors@R: c(
     person("JJ", "Allaire", , "jj@posit.co", role = "aut"),
     person("Yihui", "Xie", , "xie@yihui.name", role = c("aut", "cre"), comment = c(ORCID = "0000-0003-0645-5666")),
@@ -84,9 +84,11 @@ Suggests:
     tibble,
     vctrs,
     cleanrmd,
-    withr (>= 2.4.2)
+    withr (>= 2.4.2),
+    xml2
 VignetteBuilder: knitr
 Config/Needs/website: rstudio/quillt, pkgdown
+Config/testthat/edition: 3
 Encoding: UTF-8
-RoxygenNote: 7.2.3
+RoxygenNote: 7.3.1
 SystemRequirements: pandoc (>= 1.14) - http://pandoc.org
diff --git a/NAMESPACE b/NAMESPACE
index d6acf4a8e7..507de40cbf 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -8,6 +8,7 @@ S3method(prepare_evaluate_output,default)
 S3method(prepare_evaluate_output,htmlwidget)
 S3method(prepare_evaluate_output,knit_asis)
 S3method(prepare_evaluate_output,list)
+S3method(print,paged_df)
 export(all_output_formats)
 export(available_templates)
 export(beamer_presentation)
diff --git a/NEWS.md b/NEWS.md
index 61c8e5aa7c..589321552e 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-rmarkdown 2.26
+rmarkdown 2.28
 ================================================================================
 
 - `html_document` output allows `lib_dir` to point to a parent of the output 
@@ -9,6 +9,19 @@ rmarkdown 2.26
   child directories with RMarkdown files. #146 and #1859.
   (thanks, @jonathan-g, #2199)
 
+- `beamer_presentation` support handling latex dependencies via the new `extra_dependencies` argument and declarations within chunks (e.g., `knitr::asis_output("", meta = list(rmarkdown::latex_dependency("longtable")))`) (thanks, @cderv, @atusy, #2478).
+
+rmarkdown 2.27
+================================================================================
+
+- Provide a global option `rmarkdown.files.suffix` to configure the suffix of the directory for auxiliary files (thanks, @certara-tzweers, #2550). By default, this suffix is `_files`, which can cause HTML output files to be deleted automatically on Microsoft OneDrive or Google Drive. If that is the case for you, you may set a different suffix in your `.Rprofile`, e.g., `options(rmarkdown.files.suffix = "_rmdfiles")`.
+
+- Fix a regression in 2.26 regarding image paths post-processing in `html_document_base()`. Now absolute paths to image in the output directory (`output_dir`) are correctly made relative to the output directory again.
+
+
+rmarkdown 2.26
+================================================================================
+
 - **rmarkdown** now requires **knitr** >= 1.43.
 
 - Get rid of the superfluous warning in `find_pandoc()` (thanks, @jszhao, #2527).
@@ -17,6 +30,8 @@ rmarkdown 2.26
 
 - For the output format option `fig_crop: auto`, it will now use the same logic as in **knitr** to decide if cropping is possible (yihui/knitr#2246).
 
+- Avoid corrupting input files by accident (thanks, @J-Moravec, #2534).
+
 
 rmarkdown 2.25
 ================================================================================
diff --git a/R/base64.R b/R/base64.R
index d84f659f3f..48b74f7749 100644
--- a/R/base64.R
+++ b/R/base64.R
@@ -1,6 +1,7 @@
 # processes an HTML resource, given a regular expression that locates
 # instances of that resource
 process_html_res <- function(html, reg, processor) {
+  html <- one_string(html)
   m <- gregexpr(reg, html, perl = TRUE, ignore.case = TRUE)
   regmatches(html, m) <- lapply(regmatches(html, m), function(img_src) {
     src <- sub(reg, '\\1', img_src, ignore.case = TRUE)
@@ -10,7 +11,7 @@ process_html_res <- function(html, reg, processor) {
       character(1)
     )
   })
-  html
+  strsplit(html, "\n", fixed = TRUE)[[1]]
 }
 
 process_images <- function(html, processor) {
diff --git a/R/beamer_presentation.R b/R/beamer_presentation.R
index 1ad25303c2..d26eb91c9b 100644
--- a/R/beamer_presentation.R
+++ b/R/beamer_presentation.R
@@ -71,7 +71,8 @@ beamer_presentation <- function(toc = FALSE,
                                 self_contained = TRUE,
                                 includes = NULL,
                                 md_extensions = NULL,
-                                pandoc_args = NULL) {
+                                pandoc_args = NULL,
+                                extra_dependencies = NULL) {
 
   # base pandoc options for all beamer output
   args <- c()
@@ -144,6 +145,12 @@ beamer_presentation <- function(toc = FALSE,
     # https://github.com/rstudio/rmarkdown/issues/2294
     args <- append_in_header(process_header_includes(metadata))
 
+    if (length(extra_dependencies) || has_latex_dependencies(knit_meta)) {
+      extra_dependencies <- latex_dependencies(extra_dependencies)
+      all_dependencies <- append(extra_dependencies, flatten_latex_dependencies(knit_meta))
+      args <- c(args, append_in_header(latex_dependencies_as_string(all_dependencies)))
+    }
+
     # no-op other than caching dir location
     args
   }
diff --git a/R/html_document_base.R b/R/html_document_base.R
index 8c5727c57c..f22421d9ec 100644
--- a/R/html_document_base.R
+++ b/R/html_document_base.R
@@ -263,7 +263,12 @@ html_document_base <- function(theme = NULL,
 }
 
 extract_preserve_chunks <- function(input_file, extract = extractPreserveChunks) {
-  input_str <- read_utf8(input_file)
+  # Don't try to modify the input file if it's not .md, otherwise the original
+  # input could be corrupted (#2534). In theory, preserved chunks should only
+  # exist in the intermediate .md file from knit(). If the .md file is not
+  # intermediate but original, this processing should be harmless.
+  if (!xfun::file_ext(input_file) %in% c('md', 'markdown')) return()
+  input_str <- one_string(read_utf8(input_file))
   preserve <- extract(input_str)
   if (!identical(preserve$value, input_str)) write_utf8(preserve$value, input_file)
   preserve$chunks
diff --git a/R/html_paged.R b/R/html_paged.R
index c6935a1b14..a6bfd21e52 100644
--- a/R/html_paged.R
+++ b/R/html_paged.R
@@ -238,6 +238,7 @@ paged_table <- function(x, options = NULL) {
   x
 }
 
+#' @export
 print.paged_df <- function(x, ...) {
   knitr::asis_output(
     paged_table_html(x, options = attr(x, "options")),
diff --git a/R/ioslides_presentation.R b/R/ioslides_presentation.R
index 48422c50ee..5b66127d5a 100644
--- a/R/ioslides_presentation.R
+++ b/R/ioslides_presentation.R
@@ -87,7 +87,7 @@
 #' @section Display Modes:
 #'   The following single character keyboard shortcuts enable alternate display
 #'   modes:
-#'   \itemize{
+#'   \describe{
 #'     \item{`'f'`      }{enable fullscreen mode}
 #'     \item{`'w'`      }{toggle widescreen mode}
 #'     \item{`'o'`      }{enable overview mode}
diff --git a/R/publish_site.R b/R/publish_site.R
index 20fbf55984..9c557d4d84 100644
--- a/R/publish_site.R
+++ b/R/publish_site.R
@@ -7,12 +7,12 @@
 #' @param site_name Name for the site (names must be unique within an account). Defaults
 #'   to the `name` provided by the site generator (or to the name of the site_dir if
 #'   there is no `name` specified).
+#' @param method Publishing method (currently only "rsconnect" is available)
 #' @param server Server name. Required only if you use the same account name on
 #'   multiple servers.
 #' @param account Account to deploy application to. This parameter is only required for
 #'   the initial deployment of an application when there are multiple accounts configured
 #'   on the system.
-#' @param method Publishing method (currently only "rsconnect" is available)
 #' @param render `TRUE` to render the site locally before publishing.
 #' @param launch_browser If `TRUE`, the system's default web browser will be launched
 #'   automatically after the site is deployed. Defaults to `TRUE` in interactive sessions
diff --git a/R/render.R b/R/render.R
index 476ba4f107..45e0fa55ec 100644
--- a/R/render.R
+++ b/R/render.R
@@ -801,7 +801,7 @@ render <- function(input,
         stop2("Functions that produce HTML output found in document targeting ",
              pandoc_to, " output.\nPlease change the output type ",
              "of this document to HTML.\n",
-             "If your aiming to have some HTML widgets shown in non-HTML format as a screenshot,\n",
+             "If you're aiming to have some HTML widgets shown in non-HTML format as a screenshot,\n",
              "please install webshot or webshot2 R package for knitr to do the screenshot, and configure it by looking at its documentation.\n",
              "Alternatively, you can allow HTML output in non-HTML formats\n",
              "by adding this option to the YAML front-matter of\nyour rmarkdown file:\n\n",
diff --git a/R/rmarkdown-package.R b/R/rmarkdown-package.R
index 6f7955c811..deea60178c 100644
--- a/R/rmarkdown-package.R
+++ b/R/rmarkdown-package.R
@@ -25,5 +25,4 @@
 #'   \link{word_document}, \link{beamer_presentation}
 #' @name rmarkdown-package
 #' @aliases rmarkdown
-#' @docType package
-NULL
+"_PACKAGE"
diff --git a/R/util.R b/R/util.R
index 5cac75155a..9d95e8e1b6 100644
--- a/R/util.R
+++ b/R/util.R
@@ -184,7 +184,8 @@ file_with_meta_ext <- function(file, meta_ext, ext = xfun::file_ext(file)) {
 }
 
 knitr_files_dir <- function(file) {
-  paste(xfun::sans_ext(file), "_files", sep = "")
+  suffix <- getOption("rmarkdown.files.suffix", "_files")
+  paste(xfun::sans_ext(file), suffix, sep = "")
 }
 
 knitr_root_cache_dir <- function(file) {
diff --git a/README.md b/README.md
index 8f06759c0e..2ba4dbcb43 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,7 @@ You can also click "Knit to HTML" again to render the full document with all cod
 
 There are two main places to get help:
 
-1. The [RStudio community](https://community.rstudio.com/c/r-markdown/10) is a friendly place to ask any questions about rmarkdown and the R Markdown family of packages.
+1. The [Posit community](https://forum.posit.co/c/quarto-r-markdown/10) is a friendly place to ask any questions about rmarkdown and the R Markdown family of packages.
 
 1. [Stack Overflow](https://stackoverflow.com/questions/tagged/r-markdown) is a great source of answers to common rmarkdown questions. It is also a great place to get help, once you have created a reproducible example that illustrates your problem.
 
diff --git a/man/beamer_presentation.Rd b/man/beamer_presentation.Rd
index 547ed94025..54cdcc4251 100644
--- a/man/beamer_presentation.Rd
+++ b/man/beamer_presentation.Rd
@@ -27,7 +27,8 @@ beamer_presentation(
   self_contained = TRUE,
   includes = NULL,
   md_extensions = NULL,
-  pandoc_args = NULL
+  pandoc_args = NULL,
+  extra_dependencies = NULL
 )
 }
 \arguments{
@@ -129,6 +130,13 @@ default definition of R Markdown. See the \code{\link{rmarkdown_format}} for
 additional details.}
 
 \item{pandoc_args}{Additional command line options to pass to pandoc}
+
+\item{extra_dependencies}{A LaTeX dependency \code{latex_dependency()}, a
+list of LaTeX dependencies, a character vector of LaTeX package names (e.g.
+\code{c("framed", "hyperref")}), or a named list of LaTeX package options
+with the names being package names (e.g. \code{list(hyperef =
+c("unicode=true", "breaklinks=true"), lmodern = NULL)}). It can be used to
+add custom LaTeX packages to the .tex header.}
 }
 \value{
 R Markdown output format to pass to \code{\link[=render]{render()}}
diff --git a/man/ioslides_presentation.Rd b/man/ioslides_presentation.Rd
index 4206796fb6..f381b8f68a 100644
--- a/man/ioslides_presentation.Rd
+++ b/man/ioslides_presentation.Rd
@@ -235,7 +235,7 @@ pipe (|) character. For example:
 
 The following single character keyboard shortcuts enable alternate display
 modes:
-\itemize{
+\describe{
 \item{\code{'f'}      }{enable fullscreen mode}
 \item{\code{'w'}      }{toggle widescreen mode}
 \item{\code{'o'}      }{enable overview mode}
diff --git a/man/publish_site.Rd b/man/publish_site.Rd
index f15989e9d5..fa6e72a593 100644
--- a/man/publish_site.Rd
+++ b/man/publish_site.Rd
@@ -23,12 +23,11 @@ there is no `name` specified).}
 
 \item{method}{Publishing method (currently only "rsconnect" is available)}
 
-\item{server}{Server name. Required only if you use the same account name on
-multiple servers.}
+\item{account, server}{Uniquely identify a remote server with either your
+user \code{account}, the \code{server} name, or both. If neither are supplied, and
+there are multiple options, you'll be prompted to pick one.
 
-\item{account}{Account to deploy application to. This parameter is only required for
-the initial deployment of an application when there are multiple accounts configured
-on the system.}
+Use \code{\link[rsconnect:accounts]{accounts()}} to see the full list of available options.}
 
 \item{render}{`TRUE` to render the site locally before publishing.}
 
diff --git a/man/rmarkdown-package.Rd b/man/rmarkdown-package.Rd
index ac9c933730..8c66b09c9f 100644
--- a/man/rmarkdown-package.Rd
+++ b/man/rmarkdown-package.Rd
@@ -34,3 +34,59 @@ render("input.Rmd", pdf_document(toc = TRUE, pandoc_args = "--listings"))
 \link{render}, \link{html_document}, \link{pdf_document},
   \link{word_document}, \link{beamer_presentation}
 }
+\author{
+\strong{Maintainer}: Yihui Xie \email{xie@yihui.name} (\href{https://orcid.org/0000-0003-0645-5666}{ORCID})
+
+Authors:
+\itemize{
+  \item JJ Allaire \email{jj@posit.co}
+  \item Christophe Dervieux \email{cderv@posit.co} (\href{https://orcid.org/0000-0003-4474-2498}{ORCID})
+  \item Jonathan McPherson \email{jonathan@posit.co}
+  \item Javier Luraschi
+  \item Kevin Ushey \email{kevin@posit.co}
+  \item Aron Atkins \email{aron@posit.co}
+  \item Hadley Wickham \email{hadley@posit.co}
+  \item Joe Cheng \email{joe@posit.co}
+  \item Winston Chang \email{winston@posit.co}
+  \item Richard Iannone \email{rich@posit.co} (\href{https://orcid.org/0000-0003-3925-190X}{ORCID})
+}
+
+Other contributors:
+\itemize{
+  \item Andrew Dunning (\href{https://orcid.org/0000-0003-0464-5036}{ORCID}) [contributor]
+  \item Atsushi Yasumoto (\href{https://orcid.org/0000-0002-8335-495X}{ORCID}) (Number sections Lua filter) [contributor, copyright holder]
+  \item Barret Schloerke [contributor]
+  \item Carson Sievert (\href{https://orcid.org/0000-0002-4958-2844}{ORCID}) [contributor]
+  \item Devon Ryan \email{dpryan79@gmail.com} (\href{https://orcid.org/0000-0002-8549-0971}{ORCID}) [contributor]
+  \item Frederik Aust \email{frederik.aust@uni-koeln.de} (\href{https://orcid.org/0000-0003-4900-788X}{ORCID}) [contributor]
+  \item Jeff Allen \email{jeff@posit.co} [contributor]
+  \item JooYoung Seo (\href{https://orcid.org/0000-0002-4064-6012}{ORCID}) [contributor]
+  \item Malcolm Barrett [contributor]
+  \item Rob Hyndman \email{Rob.Hyndman@monash.edu} [contributor]
+  \item Romain Lesur [contributor]
+  \item Roy Storey [contributor]
+  \item Ruben Arslan \email{ruben.arslan@uni-goettingen.de} [contributor]
+  \item Sergio Oller [contributor]
+  \item Posit Software, PBC [copyright holder, funder]
+  \item  jQuery UI contributors (jQuery UI library; authors listed in inst/rmd/h/jqueryui/AUTHORS.txt) [contributor, copyright holder]
+  \item Mark Otto (Bootstrap library) [contributor]
+  \item Jacob Thornton (Bootstrap library) [contributor]
+  \item  Bootstrap contributors (Bootstrap library) [contributor]
+  \item  Twitter, Inc (Bootstrap library) [copyright holder]
+  \item Alexander Farkas (html5shiv library) [contributor, copyright holder]
+  \item Scott Jehl (Respond.js library) [contributor, copyright holder]
+  \item Ivan Sagalaev (highlight.js library) [contributor, copyright holder]
+  \item Greg Franko (tocify library) [contributor, copyright holder]
+  \item John MacFarlane (Pandoc templates) [contributor, copyright holder]
+  \item  Google, Inc. (ioslides library) [contributor, copyright holder]
+  \item Dave Raggett (slidy library) [contributor]
+  \item  W3C (slidy library) [copyright holder]
+  \item Dave Gandy (Font-Awesome) [contributor, copyright holder]
+  \item Ben Sperry (Ionicons) [contributor]
+  \item  Drifty (Ionicons) [copyright holder]
+  \item Aidan Lister (jQuery StickyTabs) [contributor, copyright holder]
+  \item Benct Philip Jonsson (pagebreak Lua filter) [contributor, copyright holder]
+  \item Albert Krewinkel (pagebreak Lua filter) [contributor, copyright holder]
+}
+
+}
diff --git a/tests/testthat/test-beamer_presentation.R b/tests/testthat/test-beamer_presentation.R
new file mode 100644
index 0000000000..baa757b6a2
--- /dev/null
+++ b/tests/testthat/test-beamer_presentation.R
@@ -0,0 +1,32 @@
+test_that("beamer_presentation() incorporates latex dependencies", {
+  expected_dependencies <- c(
+    "\\usepackage{longtable}", # from extra_dependencies
+    "\\usepackage{hyperref}" # from knit_meta
+  )
+
+  extra_dependencies <- list(
+    # do not include non-latex dependencies
+    # as pre processor does not care the kind of extra dependencies
+    latex_dependency("longtable")
+  )
+  knit_meta <- list(
+    latex_dependency("hyperref"),
+    html_dependency_jquery() # pre_processor should remove html dependencies
+  )
+
+  fmt <- beamer_presentation(extra_dependencies = extra_dependencies)
+
+  pandoc_args <- fmt$pre_processor(
+    list(),
+    tempfile(),
+    "static",
+    knit_meta,
+    tempdir(),
+    tempdir()
+  )
+
+  included <- pandoc_args[which(pandoc_args == "--include-in-header") + 1L]
+  expect_length(included, 1L)
+  expect_true(file.exists(included))
+  expect_identical(readLines(included), expected_dependencies)
+})
diff --git a/tests/testthat/test-formats.R b/tests/testthat/test-formats.R
index f030569bf8..92fef807f6 100644
--- a/tests/testthat/test-formats.R
+++ b/tests/testthat/test-formats.R
@@ -1,6 +1,3 @@
-# TODO: to remove when switching the package to edition 3
-local_edition(3)
-
 test_that("formats successfully produce a document", {
 
   testFormat <- function(output_format, df_print = NULL) {
diff --git a/tests/testthat/test-github_document.R b/tests/testthat/test-github_document.R
index fffcd19a26..3e622087ee 100644
--- a/tests/testthat/test-github_document.R
+++ b/tests/testthat/test-github_document.R
@@ -1,6 +1,3 @@
-# TODO: to remove when switching the package to edition 3
-local_edition(3)
-
 test_that("toc has correct identifier", {
   skip_on_cran() # avoid pandoc issue on CRAN
   skip_if_not_pandoc("2.10.1") # changes in gfm writer break this test for earlier versions
diff --git a/tests/testthat/test-html_dependencies.R b/tests/testthat/test-html_dependencies.R
index e5c275edf2..888826b49e 100644
--- a/tests/testthat/test-html_dependencies.R
+++ b/tests/testthat/test-html_dependencies.R
@@ -1,6 +1,3 @@
-# TODO: to remove when switching the package to edition 3
-local_edition(3)
-
 test_that("Correct anchor_sections style is used", {
   deps <- html_dependency_anchor_sections
   expect_s3_class(deps(), "html_dependency")
diff --git a/tests/testthat/test-html_document.R b/tests/testthat/test-html_document.R
index b75ebf2de7..d0abb54ae0 100644
--- a/tests/testthat/test-html_document.R
+++ b/tests/testthat/test-html_document.R
@@ -1,6 +1,3 @@
-# TODO: to remove when switching the package to edition 3
-local_edition(3)
-
 test_that("anchor_sections() adds correct component", {
   skip_if_not_pandoc("2.0")
   res <- list(args = NULL, lua_filters = NULL, extra_dependencies = NULL)
diff --git a/tests/testthat/test-html_document_base.R b/tests/testthat/test-html_document_base.R
new file mode 100644
index 0000000000..2b66232b65
--- /dev/null
+++ b/tests/testthat/test-html_document_base.R
@@ -0,0 +1,57 @@
+test_that("Absolute path for image from output directory are made relative to output directory", {
+  skip_if_not_pandoc("2.0")
+  skip_if_not_installed("xml2")
+  skip_if_not_installed("withr")
+  rmd <- local_rmd_file(c(
+    "---",
+    "  title: test",
+    "---",
+    "",
+    "```{r}",
+    "#| label: veryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryverylongfilename",
+    "plot(mtcars)",
+    "```"
+  ))
+  # Forcing absolute path for input and output to trigger absolute path for images
+  out <- rmarkdown::render(rmd, "html_document", output_options = list(self_contained = FALSE), output_dir = dirname(rmd), quiet = TRUE)
+  html <- xml2::read_html(out)
+  img <- xml2::xml_find_first(html, ".//img")
+  # is the path correctly made relative to _files ?
+  expect_match(xml2::xml_attr(img, "src"), sprintf("^%s", knitr_files_dir(basename(rmd))))
+})
+
+
+test_that("Absolute path from output_dir from img tag created through pandoc are made relative to output_dir", {
+  skip_if_not_pandoc("2.0")
+  skip_if_not_installed("xml2")
+  skip_if_not_installed("withr")
+  # from https://github.com/r-lib/pkgdown/issues/2341
+  # Issue happens because
+  # - knitr::hook_plot_md_base() will use markdown syntax when no width and height are provided (+ other contextt). Pandoc will convert and add a linebreak
+  #   due to its wrapping config --wrap=auto from pandoc 2.17 which could break our processing
+  # - This won't be the case for .png file for example, as a out.width is computed by knitr internally which trigger <img src=> tag use
+  # - This is why we recreate using gif below
+  #   1. Take the gif from package
+  #   2. Copy it to the fig_path() which will be in output directory
+  #   3. Use include_graphics to include it in knitr, keeping absolute path
+  rmd <- local_rmd_file(c(
+    "---",
+    "  title: test",
+    "---",
+    "",
+    "```{r}",
+    "#| label: veryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryverylongfilename",
+    "gif <- system.file('rmd/h/rmarkdown/rmd_loader.gif', package = 'rmarkdown')",
+    "stopifnot(file.exists(gif))",
+    "file <- knitr::fig_path('.gif')",
+    "dir.create(dirname(file), showWarnings = FALSE, recursive = TRUE)",
+    "file.copy(gif, file)",
+    "knitr::include_graphics(file, rel_path = FALSE)",
+    "```"
+  ))
+  out <- rmarkdown::render(rmd, "html_document", output_options = list(self_contained = FALSE, keep_md = TRUE), output_dir = dirname(rmd), quiet = TRUE)
+  html <- xml2::read_html(out)
+  img <- xml2::xml_find_first(html, ".//img")
+  # # is the path correctly made relative to _files ?
+  expect_match(xml2::xml_attr(img, "src"), sprintf("^%s", knitr_files_dir(basename(rmd))))
+})
diff --git a/tests/testthat/test-ioslides_presentation.R b/tests/testthat/test-ioslides_presentation.R
index 2d50749ef9..80b73b0308 100644
--- a/tests/testthat/test-ioslides_presentation.R
+++ b/tests/testthat/test-ioslides_presentation.R
@@ -1,6 +1,3 @@
-# TODO: to remove when switching the package to edition 3
-local_edition(3)
-
 test_that("Only mathjax is supported", {
   expect_error(ioslides_presentation(math_method = "katex"))
 })
diff --git a/tests/testthat/test-lua-filters.R b/tests/testthat/test-lua-filters.R
index e183d9a736..4f273dc0fe 100644
--- a/tests/testthat/test-lua-filters.R
+++ b/tests/testthat/test-lua-filters.R
@@ -1,6 +1,3 @@
-# TODO: to remove when switching the package to edition 3
-local_edition(3)
-
 .generate_md_and_convert <- function(content, output_format) {
   input_file <- local_rmd_file(c("---\ntitle: Test\n---\n", content))
   res <- .render_and_read(input_file, output_format = output_format)
diff --git a/tests/testthat/test-math.R b/tests/testthat/test-math.R
index 87b50ba09c..ed44420a80 100644
--- a/tests/testthat/test-math.R
+++ b/tests/testthat/test-math.R
@@ -1,6 +1,3 @@
-# TODO: to remove when switching the package to edition 3
-local_edition(3)
-
 test_that("check_math_argument()", {
   # valid value
   expect_null(check_math_argument(NULL))
diff --git a/tests/testthat/test-md_document.R b/tests/testthat/test-md_document.R
index 7ef185754a..4429aab799 100644
--- a/tests/testthat/test-md_document.R
+++ b/tests/testthat/test-md_document.R
@@ -1,5 +1,3 @@
-local_edition(3)
-
 test_that("adapt_md_variant() adds extensions to markdown variants", {
   expect_identical(adapt_md_variant("markdown"), "markdown-yaml_metadata_block-pandoc_title_block")
   expect_identical(adapt_md_variant("markdown_phpextra"), "markdown_phpextra-yaml_metadata_block")
diff --git a/tests/testthat/test-pandoc.R b/tests/testthat/test-pandoc.R
index b6d0e7bbea..d70dda9159 100644
--- a/tests/testthat/test-pandoc.R
+++ b/tests/testthat/test-pandoc.R
@@ -1,6 +1,3 @@
-# TODO: to remove when switching the package to edition 3
-local_edition(3)
-
 test_that("build highlight args for pandoc correctly", {
   hl_style <- function(name) c("--highlight-style", name)
   expect_equal(pandoc_highlight_args(NULL), "--no-highlight")
diff --git a/tests/testthat/test-pdf_document.R b/tests/testthat/test-pdf_document.R
new file mode 100644
index 0000000000..c06fbef49f
--- /dev/null
+++ b/tests/testthat/test-pdf_document.R
@@ -0,0 +1,32 @@
+test_that("pdf_document() incorporates latex dependencies", {
+  expected_dependencies <- c(
+    "\\usepackage{longtable}", # from extra_dependencies
+    "\\usepackage{hyperref}" # from knit_meta
+  )
+
+  extra_dependencies <- list(
+    # do not include non-latex dependencies
+    # as pre processor does not care the kind of extra dependencies
+    latex_dependency("longtable")
+  )
+  knit_meta <- list(
+    latex_dependency("hyperref"),
+    html_dependency_jquery() # pre_processor should remove html dependencies
+  )
+
+  fmt <- pdf_document(extra_dependencies = extra_dependencies)
+
+  pandoc_args <- fmt$pre_processor(
+    list(),
+    tempfile(),
+    "static",
+    knit_meta,
+    tempdir(),
+    tempdir()
+  )
+
+  included <- pandoc_args[which(pandoc_args == "--include-in-header") + 1L]
+  expect_length(included, 1L)
+  expect_true(file.exists(included))
+  expect_identical(readLines(included), expected_dependencies)
+})
diff --git a/tests/testthat/test-render.R b/tests/testthat/test-render.R
index 47a50f7968..90c026e361 100644
--- a/tests/testthat/test-render.R
+++ b/tests/testthat/test-render.R
@@ -1,6 +1,3 @@
-# TODO: to remove when switching the package to edition 3
-local_edition(3)
-
 test_that("Metadata is available before pre_knit", {
   message_pre_knit = 'pre_knit handles metadata'
   fmt <- md_document()
@@ -32,3 +29,12 @@ test_that("file_scope split correctly input file", {
   expect_snapshot_file(splitted[1])
   expect_snapshot_file(splitted[2])
 })
+
+test_that("Input file is not corrupted", {
+  input <- tempfile()
+  on.exit(unlink(input), add = TRUE, after = FALSE)
+  saveRDS("test", input)
+  # try() is necessary for Pandoc <= 2.14.2
+  try(render(input, quiet = TRUE))
+  expect_equal(readRDS(input), "test")
+})
diff --git a/tests/testthat/test-shiny.R b/tests/testthat/test-shiny.R
index 8625bc1a80..9cdb4466db 100644
--- a/tests/testthat/test-shiny.R
+++ b/tests/testthat/test-shiny.R
@@ -1,6 +1,3 @@
-# TODO: added for new tests - to remove when switching the package to edition 3
-local_edition(3)
-
 test_that("file.path.ci returns correctly no matter the case", {
   tmp_dir <- withr::local_tempdir()
   expect_equal(file.path.ci(tmp_dir, "global.R"), file.path(tmp_dir, "global.R"))
diff --git a/tests/testthat/test-shiny_prerendered.R b/tests/testthat/test-shiny_prerendered.R
index 5a211377e2..7aee125219 100644
--- a/tests/testthat/test-shiny_prerendered.R
+++ b/tests/testthat/test-shiny_prerendered.R
@@ -1,6 +1,3 @@
-# TODO: added for new tests - to remove when switching the package to edition 3
-local_edition(3)
-
 test_that("HTML template contains special comment when in shiny prerendered", {
   skip_if_not_pandoc()
   special_comment <- "<!-- HEAD_CONTENT -->"
diff --git a/tests/testthat/test-site.R b/tests/testthat/test-site.R
index 924efa23bc..f2c0a782a9 100644
--- a/tests/testthat/test-site.R
+++ b/tests/testthat/test-site.R
@@ -1,5 +1,3 @@
-local_edition(3)
-
 # copy part of our demo site to a tempdir
 local_create_site <- function(files, env = parent.frame()) {
   site_dir <- tempfile()