CODEWITHSUNDEEP
javascriptgoogle-chromegoogle-chrome-extensionscreenshot
genesis
genesis

Reputation: 50974

How could I take screenshot & upload images with with js?

I was wondering if anyone knows how could I make my own "Webpage screenshot taker"

Features would be

Are there any tutorials/helful articles about doing this? How could I "post" image to my script? Via ajax? I think it's not possible

I would use any existing extension but problem is that they're all so complicated.

UPDATE:

now it works, also sending ajax works but on my server I can't see binary data sent.

If I open chrome and look at form data sent, I see

boundary:Google_Chrome_Screen_Capture
dataList%5B0%5D%5BcontentType%5D:application/atom xml
dataList%5B0%5D%5Bdata%5D:<entry xmlns="http://www.w3.org/2005/Atom"><title>1312107206756.png</title><summary></summary><category scheme="http://schemas.google.com/g/2005#kind" term="http://schemas.google.com/photos/2007#photo"/></entry>
dataList%5B1%5D%5BcontentType%5D:image/png
dataList%5B1%5D%5Bdata%5D:PNG


IHDR³¾~>-IDATx^íMnK¯P5²ôjPBÍ,
XO5 ±`èyÈYsDI63,FÈ]fFz[\Ý=j©:~22##* ý9÷0²ÉÌ8ç|qãfzíßÿýßBø8°FR¤ça&0f()03LBÉ&J
Yûç¿þÃïÌäµù¡"Ô;@Õ#caÆÉR½Â¬3Nêfõà@q²T¯0«GÇÂ¥z%Y=8f,Õ !ÌêÀ10ãd©^ aV'KõJ³zp Ì8YªWBÕ#caÆÉR½Â¬3Nêfõà@q²T¯0«GÇÂ¥z%Y=8f,Õ !ÌêÀ10ãd©^  aV'KõJ³zp Ì8YªWBÕ#caÆÉR½Â¬3Nêfõà@q²T¯0«GÇÂ¥z%Y=8f,Õ !ÌêÀ10ãd©^  aV'KõJ³zp Ì8YªWBÕ#caÆÉR½Â¬3Nêfõà@q²T¯0«GÇÂ¥z%Y=8f,Õ !ÌêÀ10ãd©^  aV'KõJ³zp Ì8YªWBÕ#caÆÉR½Â¬3Nêfõà@q²T¯0«GÇÂ¥z%Y=8f,Õ !ÌêÀ10ãd©^  aV'KõJ³zp Ì8YªWBÕ#caÆÉR½Â¬3Nêfõà@q²T¯0«GÇÂ¥z%Y=8f,Õ !ÌêÀ10ãd©^  aV'KõJ³zp Ì8YªWBÕ#caÆÉR½Â¬3Nêfõà@q²T¯0«GÇÂ¥z%Y=8èyz ¯ßýÏåÑú5ys]³ßaøKÂ|.ööE®Fg®ÎÊéÁk_Ê㫳m¼ækÖ72Û¶ëøµ~\·cu0_µíý6a¾êìx̾:È߲骹rþI|Ñ}$ëî¸üÍÿ@½üS|a«h";òÂ>c31#újØòLåàõ;ñ3eóÄëHç¦9ìñXw|[áîÉv¾þlqÙ÷7'2Édëͼ¨Õbf±Þ¬õë×lÕA§ÓÏ­çÎû$9òð©È~ü|e¼ëÀá÷ÓÃÙÉþùcynIðûyfÊ8àüÓ¼mËKO|Þf¬½ÃþYÒ¡l¾´DÓ3|»7ÌÆË4ner¸×å¨upÛådc¥ì²gϵû¹Í¦lÕâ×üîG¼3ø*ÚLqð¦Á^¼t§9- ûòÔ»w.M³=9l{áÌÒEEûäº9íaC4=ß*«ßãiXߺÙwÅÏå¢çïúÿ­à׶ùïqeNµUÛ{*<$ÌKáMoX-f¢ò*±-³}µ{á/µÙí/¸ÖâäþlHq6«Z¡;   mCÓ3¢vĶ®åIª´ º5sTZ¨hj3éõZìüaÓû9ja®ÙÅ&hð0¯óÑ?'Yoì¸Ý£Ù¦üØÈÚtÈüø· ÀÅÕ3ô«¦¹.úï¶gv¦ÜªdÏlßb­¾­£k.µQ[z¾e^÷UÜ ³ý"Tò0¯ó«W¯wB¯WásâeÛJðFý§«ÚéË\ö.}ÑrÁ1qmz]ÏìO׫Oþ|­µaÇsD=s¸÷Å®Z[çÉNyæß!â{{ôÌÖcoÊí׿½|¯5ük½úkëäZCdýyøbÑpç÷Fߣ72øÜmoï¡  U±ækF©zF,¼:;ð£/#¾f´´a#ÕÍSþµ`µmùÚc?ïtô#öðÎiå&3ÿ"ÎÁÚYýÎl:ZçWõWøz@·Å̾ÉÍü©÷¶8ÀuÀ8pÉ¿Âø@!f)Á;@I&J
!ÌdÆÂ%f2ãaB3q0ÃDI!À8@a¢¤ÂL` Ì0QRa&0f()03LBÉ&J
!ÌdÆÂ%f2ãaBÖ¾|ù² 
tÁµ?f$©A3!q0ÃDI!À8@a¢¤ÂL` Ì0QRa&0f()03LBÉ&J
!ÌdÆÂ%f2ãaB3q0ÃDI!À8@a¢¤ÂL` Ì0QRa&0f()03LÒóüL>^ȽÝ-ùcú>·Êé½}çìûÜeÖzÏÆú~¾Éõ´åvY\=̿¾Fô}îWh¼ì`þðöÃb8ËtzaìÊøÉÜ|ã÷åÌ8OrWéÔã»Ï.{í}ÇfÁT¦~0=Ü­¼ÔGóGf¦¹·ìü!¹¹||{Ù3nÞ3¹5{¾ËûÓ¡<Ù96ëÌÍcõÓ¦s¢»öT²÷IÕ³lÍnÌ©X7WÓÛeî~¾ÜÛÉYMÍ~E;§IÏÒl;¸j*,Kç)|[ûðöíâl8';we`áø,>ì¶\¹6A´æÙ!²céðÙ¹ïåt]û<Ï6SaÄüÛDeË=oþh6]Øùµ?¾;:Ïc7]Cb`¼7×Å=Ù-v^¶¨Ì¼:ÏÄ^;aØl-ã;/"½ÝæîãKÖ*®K1Kò&Ï»Q³¾øZ2OìÙÐUK[    M)µÕQ¢9Ý5 õÝ¥q|åÕ/;¯ÌFU¶3·|óãÌ`wkP¿VkDë<Q@±ÆD÷{¼¾à°¹Ö³xÝîöx6½   4s'ÕÎEÕѮŠU~4´1Ñg¶ÊÜÔ$y%ɪåÙÈÀ=¸f#H=
0çÁÚ£Ò¶¡åÉ~OOæI
ÖÍZ«Fh»âtRðü    ã<ËÚ'ûûç¬ÝqmZXc_Uo×¹ÓuØÍÖÑKÀܨ§²*ÍKÇè
sYó-¬Ìac}~1PG¡BZ«DZÛ*s]%NIa7aRµ;DM§@kó¨«/½`nÑÓ¹2w£7ÌEf¾g=ô½aÜÓV(zAß»ª½õ²ª¸BYÑõö¥Ë÷×iïÜsMoÞ¡gNûûrhªÁRÏB»S¼°¶½#T®5¶ñ¼/}`®6ÓSjÑÒÖ.i*¼f^0³uÙæ @ü5#û]jÉAöòe¯ÇcرUøÊ£ãu4ñÜÍ¥¯)î¹ä FxQM7PÝ異ë׺#ôÁ§¶{¨ñÌþ%Õýs_h¦ð5&^GEoÜjDs7ëìêÿ2äòlû:lF=qZëy1P§1zÂìßK|«QéÛ¶k¼ÚÚ5N»úÐÕyõ1Z*YÍ`ßm³½â¯z-ê÷~èÂ*E0°©Þ6ûÂÜW¯yîÛ\îÞ]éï°·Í´YÏÿÈ>ãÝbIEND®B`

however when I try

 print_r($_POST);

on target machine, it outputs everything except data

 Array
                (
                    [boundary] => Google_Chrome_Screen_Capture
                    [dataList] => Array
                        (
                            [0] => Array
                                (
                                    [contentType] => application/atom+xml
                                    [data] => <entry xmlns="http://www.w3.org/2005/Atom"><title>1312107206756.png</title><summary></summary><category scheme="http://schemas.google.com/g/2005#kind" term="http://schemas.google.com/photos/2007#photo"/></entry>
                                )

                            [1] => Array
                                (
                                    [contentType] => image/png
                                )

                        )

                )

is it configuration of server or extension fault?

UPDATE2:

as serg suggested, I have sent my image in base64 code encoding. It worked and I saved image on my server, however it does send only blank image

base64 data looks like:

dataList%5B1%5D%5Bdata%5D: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 wplGMsKZVAPDosOiw4XCi8OcwpXDssOycsKwHh8bG0MuwpfCk37DjEIjwp1OY8OHwo7DlwnCgHFSOD4hVsKUwpTClMKiwqTCpMKEw6tgMsK8wp51wofCgl3CrMKDRkfDh0jCpsKGwq7CrsKvw5DDnMOcwqwkQGNAwpggw6zDnMK5EwcOHAAlUF8gwrZvw5/DgQFjTsKwO8OoVVFRwoEXNybCsHTDqVLCvMO/w4HCh8Kuw6dEIsKBwrdaw5/DhsOtw5vCt8KDworDpkwdIwBLCcKIw4PChw/CqwPDgcOWIxgTGhoaw5DDksOSwoLCtsK2NgUgwrYjR8Kowo8bYATCtXbDhsKMGXjCu8O1LcKsWcKzBsKbwpPDjcKuw6dNwps2w6HDmcOnw5bDo8OWwq1bQUVjwpxCwoN1UnlZaTAgwobCh8KHw7PDi8KWLcOjwr3Cs2XDixZ 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 Sj16P8KyWcK9eg1ywrHDkGDDocOKw4A ecKyNxgQQcOrwojCl17DnsKEw4F/LlPCnsK4w4nDq8KJwqAXwqPDrcOMwpkzw7lnLMOXeD3Cj8KMwowEFcKtD8KfNGrDjMKtwq3DgcKpH04GB0JFwqNZUD3Dv3wCw6fDj8O/w40rODZcw50zF8KZw4IqS3bDj8KfX8KLH388wqUOw4TDoMOgYMKgEsK7wqfCpwcLFz7CgsKKwopKwo7DvEQYcTfCgGPCicO8w4zCmcOfw4FqEsKVK8OQChUrwoUzwpkMwr/Ch8KGwoZUw6RPWRtWwr3DjsKbNw8rKcOxwqpcw5rCpUvCl8OuIW7Cq8KYHMK8wo3DiixZwqNGw797IFTCoMKLwoAwUMKKwoDCiMKAEAMmYkTDhMKIwogRw5JBJArCjSg0wqLDkMKIQsODwq/DgsKMcsKEwoHDjn8vwp3CncOReT3CmRgAAAAASUVORMKuQmDCgg==

and my image (saved) is here

What can I do now?

Upvotes: 1

Views: 5294

Answers (4)

Zibri
Zibri

Reputation: 9857

Not entirely true: how do you explain google ability to take screenshots for bug reports in google websites? go to google maps (for example) and select FEEDBACK at the bottom of the page. It takes a screenshot and sends it to google. And that's no extension.

Upvotes: 0

serg
serg

Reputation: 111325

Chrome extension API allows taking screenshot only of a visible area of a current tab, that's it. If you need more (whole page or inactive tab) you would need to create a NPAPI plugin (C++ dll).

Once you got the screenshot (in is encoded in DataURI (base64) format) you can write it into <canvas> element for editing. You can resize it, crop, and anything you like (you have full control over each pixel).

After editing you can again import the screenshot from <canvas> to DataURI and send it via ajax (POST or GET) to your php script. Extensions are allowed to make cross domain ajax requests.

Upvotes: 2

user188654
user188654

Reputation:

My favorite screenshot taking and manipulation extension for Chrome Awesome Screenshot.

Upvotes: 0

Niklas
Niklas

Reputation: 30002

JavaScript cannot take screenshots unless it is within an extension (drawWindow). However, if you are looking to do something similar to the Google Feedback tool, which does not take a screenshot, but builds an image mimicking the page based on the DOM, then this experimental project may be of interest to you. Some examples of the script in use here.

Another option is to use a server to take the screenshot for you, but then it isn't what the user sees, but what the server sees, and that may or may not be what you are after (with PHP, see imagegrabscreen and imagegrabwindow).

For Chrome extensions, Google has an open source extension which allows you to select a region or the whole page for screen capture. With a little modification, you could make it upload the screenshot to your server with AJAX.

Upvotes: 5

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