1 \input texinfo @c -*-texinfo-*-
3 @setfilename ../../info/eww.info
4 @settitle Emacs Web Wowser
9 This file documents the GNU Emacs Web Wowser (EWW) package.
11 Copyright @copyright{} 2014--2017 Free Software Foundation, Inc.
14 Permission is granted to copy, distribute and/or modify this document
15 under the terms of the GNU Free Documentation License, Version 1.3 or
16 any later version published by the Free Software Foundation; with no
17 Invariant Sections, with the Front-Cover Texts being ``A GNU Manual,''
18 and with the Back-Cover Texts as in (a) below. A copy of the license
19 is included in the section entitled ``GNU Free Documentation License.''
21 (a) The FSF's Back-Cover Text is: ``You have the freedom to copy and
22 modify this GNU manual.''
26 @dircategory Emacs misc features
28 * EWW: (eww). Emacs Web Wowser
34 @title Emacs Web Wowser (EWW)
35 @subtitle A web browser for GNU Emacs.
38 @vskip 0pt plus 1filll
57 * History and Acknowledgments::
58 * GNU Free Documentation License:: The license for this documentation.
63 * Lisp Function Index::
69 @dfn{EWW}, the Emacs Web Wowser, is a web browser for GNU Emacs. It
70 can load, parse, and display various web pages using @dfn{shr.el}.
71 However a GNU Emacs with @code{libxml2} support is required.
78 @vindex eww-search-prefix
81 You can open a URL or search the web with the command @kbd{M-x eww}.
82 If the input doesn't look like a URL or domain name the web will be
83 searched via @code{eww-search-prefix}. The default search engine is
84 @url{https://duckduckgo.com, DuckDuckGo}. If you want to open a file
85 either prefix the file name with @code{file://} or use the command
86 @kbd{M-x eww-open-file}.
90 @findex eww-copy-page-url
94 If loading the URL was successful the buffer @file{*eww*} is opened
95 and the web page is rendered in it. You can leave EWW by pressing
96 @kbd{q} or exit the browser by calling @kbd{eww-quit}. To reload the
97 web page hit @kbd{g} (@code{eww-reload}). Pressing @kbd{w}
98 (@code{eww-copy-page-url}) will copy the current URL to the kill ring.
100 @findex eww-open-in-new-buffer
102 The @kbd{M-RET} command (@code{eww-open-in-new-buffer}) opens the
103 URL at point in a new EWW buffer, akin to opening a link in a new
104 ``tab'' in other browsers.
108 The @kbd{R} command (@code{eww-readable}) will attempt to determine
109 which part of the document contains the ``readable'' text, and will
110 only display this part. This usually gets rid of menus and the like.
112 @findex eww-toggle-fonts
113 @findex shr-use-fonts
115 The @kbd{F} command (@code{eww-toggle-fonts}) toggles whether to use
116 variable-pitch fonts or not. This sets the @code{shr-use-fonts} variable.
118 @findex eww-toggle-colors
119 @findex shr-use-colors
121 The @kbd{C} command (@code{eww-toggle-colors}) toggles whether to use
122 HTML-specified colors or not. This sets the @code{shr-use-colors} variable.
125 @vindex eww-download-directory
128 A URL under the point can be downloaded with @kbd{d}
129 (@code{eww-download}). The file will be written to the directory
130 specified in @code{eww-download-directory} (Default: @file{~/Downloads/}).
133 @findex eww-forward-url
134 @findex eww-list-histories
139 EWW remembers the URLs you have visited to allow you to go back and
140 forth between them. By pressing @kbd{l} (@code{eww-back-url}) you go
141 to the previous URL@. You can go forward again with @kbd{r}
142 (@code{eww-forward-url}). If you want an overview of your browsing
143 history press @kbd{H} (@code{eww-list-histories}) to open the history
144 buffer @file{*eww history*}. The history is lost when EWW is quit.
145 If you want to remember websites you can use bookmarks.
147 @vindex eww-history-limit
148 Along with the URLs visited, EWW also remembers both the rendered
149 page (as it appears in the buffer) and its source. This can take a
150 considerable amount of memory, so EWW discards the history entries to
151 keep their number within a set limit, as specified by
152 @code{eww-history-limit}; the default being 50. This variable could
153 also be set to @code{nil} to allow for the history list to grow
157 PDFs are viewed inline, by default, with @code{doc-view-mode}, but
158 this can be customized by using the mailcap (@pxref{mailcap,,,
159 emacs-mime, Emacs MIME Manual})
160 mechanism, in particular @code{mailcap-mime-data}.
162 @findex eww-add-bookmark
163 @findex eww-list-bookmarks
167 EWW allows you to @dfn{bookmark} URLs. Simply hit @kbd{b}
168 (@code{eww-add-bookmark}) to store a bookmark for the current website.
169 You can view stored bookmarks with @kbd{B}
170 (@code{eww-list-bookmarks}). This will open the bookmark buffer
171 @file{*eww bookmarks*}.
173 @findex eww-switch-to-buffer
174 @findex eww-list-buffers
177 @cindex Multiple Buffers
178 To get summary of currently opened EWW buffers, press @kbd{S}
179 (@code{eww-list-buffers}). The @file{*eww buffers*} buffer allows you
180 to quickly kill, flip through and switch to specific EWW buffer. To
181 switch EWW buffers through a minibuffer prompt, press @kbd{s}
182 (@code{eww-switch-to-buffer}).
184 @findex eww-browse-with-external-browser
185 @vindex shr-external-browser
186 @vindex eww-use-external-browser-for-content-type
188 @cindex External Browser
189 Although EWW and shr.el do their best to render webpages in GNU
190 Emacs some websites use features which can not be properly represented
191 or are not implemented (E.g., JavaScript). If you have trouble
192 viewing a website with EWW then hit @kbd{&}
193 (@code{eww-browse-with-external-browser}) inside the EWW buffer to
194 open the website in the external browser specified by
195 @code{shr-external-browser}. Some content types, such as video or
196 audio content, do not make sense to display in GNU Emacs at all. You
197 can tell EWW to open specific content automatically in an external
198 browser by customizing
199 @code{eww-use-external-browser-for-content-type}.
204 @findex eww-view-source
206 @cindex Viewing Source
207 You can view the source of a website with @kbd{v}
208 (@code{eww-view-source}). This will open a new buffer
209 @file{*eww-source*} and insert the source. The buffer will be set to
210 @code{html-mode} if available.
212 @findex url-cookie-list
215 EWW handles cookies through the @ref{Top, url package, ,url}.
216 You can list existing cookies with @kbd{C} (@code{url-cookie-list}).
217 For details about the Cookie handling @xref{Cookies,,,url}.
219 @vindex eww-header-line-format
221 The header line of the EWW buffer can be changed by customizing
222 @code{eww-header-line-format}. The format replaces @code{%t} with the
223 title of the website and @code{%u} with the URL.
225 @findex eww-toggle-paragraph-direction
226 @cindex paragraph direction
227 The @kbd{D} command (@code{eww-toggle-paragraph-direction}) toggles
228 the paragraphs direction between left-to-right and right-to-left
229 text. This can be useful on web pages that display right-to-left test
230 (like Arabic and Hebrew), but where the web pages don't explicitly
231 state the directionality.
233 @c @vindex shr-bullet
234 @c @vindex shr-hr-line
235 @c @vindex eww-form-checkbox-selected-symbol
236 @c @vindex eww-form-checkbox-symbol
237 @c EWW and the rendering engine shr.el use ASCII characters to
238 @c represent some graphical elements, such as bullet points
239 @c (@code{shr-bullet}), check boxes
240 @c (@code{eww-form-checkbox-selected-symbol} and
241 @c @code{eww-form-checkbox-symbol}), and horizontal rules
242 @c @code{shr-hr-line}). Depending on your fonts these characters can be
243 @c replaced by Unicode glyphs to achieve better looking results.
245 @vindex shr-max-image-proportion
246 @vindex shr-blocked-images
247 @cindex Image Display
248 Loading random images from the web can be problematic due to their
249 size or content. By customizing @code{shr-max-image-proportion} you
250 can set the maximal image proportion in relation to the window they
251 are displayed in. E.g., 0.7 means an image is allowed to take up 70%
252 of the width and height. If Emacs supports image scaling (ImageMagick
253 support required) then larger images are scaled down. You can block
254 specific images completely by customizing @code{shr-blocked-images}.
256 @vindex shr-color-visible-distance-min
257 @vindex shr-color-visible-luminance-min
259 EWW (or rather its HTML renderer @code{shr}) uses the colors declared
260 in the HTML page, but adjusts them if needed to keep a certain minimum
261 contrast. If that is still too low for you, you can customize the
262 variables @code{shr-color-visible-distance-min} and
263 @code{shr-color-visible-luminance-min} to get a better contrast.
265 @cindex Desktop Support
266 @cindex Saving Sessions
267 In addition to maintaining the history at run-time, EWW will also
268 save the partial state of its buffers (the URIs and the titles of the
269 pages visited) in the desktop file if one is used. @xref{Saving Emacs
270 Sessions,,, emacs, The GNU Emacs Manual}.
272 @vindex eww-desktop-remove-duplicates
273 EWW history may sensibly contain multiple entries for the same page
274 URI@. At run-time, these entries may still have different associated
275 point positions or the actual Web page contents.
276 The latter, however, tend to be overly large to preserve in the
277 desktop file, so they get omitted, thus rendering the respective
278 entries entirely equivalent. By default, such duplicate entries are
279 not saved. Setting @code{eww-desktop-remove-duplicates} to nil will
280 force EWW to save them anyway.
282 @vindex eww-restore-desktop
283 Restoring EWW buffers' contents may prove to take too long to
284 finish. When the @code{eww-restore-desktop} variable is set to
285 @code{nil} (the default), EWW will not try to reload the last visited
286 Web page when the buffer is restored from the desktop file, thus
287 allowing for faster Emacs start-up times. When set to @code{t},
288 restoring the buffers will also initiate the reloading of such pages.
290 @vindex eww-restore-reload-prompt
291 The EWW buffer restored from the desktop file but not yet reloaded
292 will contain a prompt, as specified by the
293 @code{eww-restore-reload-prompt} variable. The value of this variable
294 will be passed through @code{substitute-command-keys} upon each use,
295 thus allowing for the use of the usual substitutions, such as
296 @code{\[eww-reload]} for the current key binding of the
297 @code{eww-reload} command.
299 @node History and Acknowledgments
300 @appendix History and Acknowledgments
302 EWW was originally written by Lars Ingebrigtsen, known for his work on
303 Gnus. He started writing an Emacs HTML rendering library,
304 @code{shr.el}, to read blogs in Gnus. He eventually added a web
305 browser front end and HTML form support. Which resulted in EWW, the
306 Emacs Web Wowser. EWW was announced on 16 June 2013:
307 @url{http://lars.ingebrigtsen.no/2013/06/16/eww/}.
309 EWW was then moved from the Gnus repository to GNU Emacs and several
310 developers started contributing to it as well.
312 @node GNU Free Documentation License
313 @chapter GNU Free Documentation License
314 @include doclicense.texi
317 @unnumbered Key Index
322 @unnumbered Variable Index
324 @vindex eww-after-render-hook
325 After eww has rendered the data in the buffer,
326 @code{eww-after-render-hook} is called. It can be used to alter the
327 contents, for instance.
331 @node Lisp Function Index
332 @unnumbered Function Index
337 @unnumbered Concept Index