Where developers come to connect, share, build and be inspired.


One line browser notepad



Sometimes I just need to type garbage. Just to clear out my mind. Using editors to type such gibberish annoys me because it clutters my project workspace (I'm picky, I know).

So I do this. Since I live in the browser, I just open a new tab and type in the url tab.

data:text/html, <html contenteditable>

Voila, browser notepad.

Why it works?

You don't need to remember it. It's not rocket science. We are using the Data URI's format and telling the browser to render an html (try "javascript:alert('Bazinga');"). The content of said html is a simple html line with the html5 attribute contenteditable. This works only on modern browsers that understand this attribute. Click and type!


  • A404d3280b6226449ddade0b1db4e271

    I made a version that is a full blown Ruby editor with syntax highlighting from Ace.


  • User-avatar

    Forgive me for the shameless plug, but thought this might be useful for others. I put together a little project that uses the browsers localstorage so you can jot notes down and come back to them at http://a5.gg

  • 5572003a2d29e47e0d8084ac35ba3a42

    Here is a variation on the theme that changes the background color as you type:

    data:text/html, <html><head><link href='http://fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css'><style type="text/css"> html { font-family: "Open Sans" } * { -webkit-transition: all linear 1s; }</style><script>window.onload=function(){var e=false;var t=0;setInterval(function(){if(!e){t=Math.round(Math.max(0,t-Math.max(t/3,1)))}var n=(255-t*2).toString(16);document.body.style.backgroundColor="#ff"+n+""+n},1e3);var n=null;document.onkeydown=function(){t=Math.min(128,t+2);e=true;clearTimeout(n);n=setTimeout(function(){e=false},1500)}}</script></head><body contenteditable style="font-size:2rem;line-height:1.4;max-width:60rem;margin:0 auto;padding:4rem;">
  • 31474fc2498303a486f57d623fabdc89

    You can use textarea and make it "invisible" if you want autofocus.

    data:text/html, <textarea style="font-size: 1.5em; width: 100%; height: 100%; border: none; outline: none" autofocus />
  • User-avatar

    My own contribution:

    data:text/html, <style>html,body{margin: 0; padding: 0;}</style><textarea style="font-size: 1.5em; line-height: 1.5em; background: %23000; color: %233a3; width: 100%; height: 100%; border: none; outline: none; margin: 0; padding: 90px;" autofocus placeholder="wake up Neo..." />
  • User-avatar

    You're such a bunch of nerds ;-)

  • A208c6ddf9836a1e2a32a0dab0362713

    Really cool, I liked @fvsch version, I just added a title so the text on the tab makes a bit more sense

    data:text/html, <title>Text Editor</title><body contenteditable style="font-size:2rem;line-height:1.4;max-width:60rem;margin:0 auto;padding:4rem;">
  • C88f05581326e914aab40028a0d8bbe0

    My 2cents! Awesome bookmarklet, from a marklet lover =)


    PS: sorry for the overflow =|

  • 2249bda1e0ebd93ad6cc25172bb847dd

    I went the textarea route so that I could add the ability to save the contents to a file http://pastebin.com/U8658H5c

  • A06c38dd3377bbc0db360c44a2969fed

    I've copied @sufehmi but added font-family: monaco and a H1

    data:text/html;charset=utf-8, <title>TextEditor</title><body contenteditable style="font-size:2rem;font-family:monaco;line-height:1.4;max-width:60rem;margin:0 auto;padding:4rem;" spellcheck="false"><h1>Text Editor</h1><p>Start Here.
  • User-avatar

    I made a bookmarklet that takes highlighted text on a web page and when you press the button then opens the new edit window with that text in it: http://ednortonengineeringsociety.blogspot.com/2013/01/cool-trick-with-contenteditable-in-html.html

  • 903078a8d6e9aca120b83cf4b3e86050

    Annoying, the comment must have got cut off. Mine uses a textarea rather than the body, here:


  • User-avatar

    Like @zaus said, Chrome throws "SECURITY_ERR: DOM Exception 18" for localStorage. So, simply save the code into some HTML file. Here's a version with saving every time Enter is pressed:

    <!DOCTYPE html><head><meta charset="utf-8"><title>TextEditorLocal</title><script>window.onload=function(){f1()}; 
    function f1(){a=window.localStorage['e'];if(a) document.body.innerHTML=a};function f2(t,e){if(e.keyCode==13){window.localStorage['e']=t.innerHTML}}</script>
    <body contenteditable style="font-size:2rem;line-height:1.4;max-width:60rem;margin:0 auto;padding:4rem;word-wrap:break-word;background:black;color:green;" spellcheck="false" onkeypress="f2(this,event);"></body></html>
  • User-avatar

    This is great. Made a bookmark from it.

  • User-avatar

    I'm going to use the hell out of this. thanks.

  • 187639d18e6dbe73c3d0f14440b56aba

    neat, but would be good if someone implemented some sort of dirty checking to prevent lost work by accidentally closing the tab.

  • User-avatar

    for Safari browser too, base64 needed



  • D592a9591198b6cc9b2f68d5547839d4

    (My install of) Firefox defaults to ISO-8859-1, which turns non-iso-8859-1 characters to html entities when saving to a file. This version is more int'l friendly:

    data:text/html;charset=utf-8, <html contenteditable>

  • User-avatar

    Hi, excellent article - and excellent discussion too.

    I've combined several of the ideas above into the following :

    data:text/html;charset=utf-8, <title>TextEditor</title><body contenteditable style="font-size:2rem;line-height:1.4;max-width:60rem;margin:0 auto;padding:4rem;" spellcheck="false">

    Features :

    • Nice layout : whitespace, bigger font, easier on eyes.

    • UTF-8 / international characters compatible

    • Titled tab

    • No spellcheck

    It's still missing some big features though, for example :

    • localStorage : the code from 3lv_1 doesn't work, at least on Chrome.

    This is critical and essential - it's like AutoSave. You can forget about saving, it's done automatically for you. Zero data loss.

    http://a5.gg works & looks great, but you can't scroll (on Chrome) once there are more lines than screen space == showstopper

    Once localStorage works, then I can start using this; will move my scratch pad from my Text Editor :)

    Thanks again to everyone for this awesome thread.

  • User-avatar

    It's like typing on paper...

    data:text/html, body{font-family:helvetica;font-size:15px;line-height:22px;color:#666;width:600px;margin:40px auto;background:#FFF;border:1px solid #DADADA;padding:50px; }

  • 903078a8d6e9aca120b83cf4b3e86050

    I added one which combines loads of the above, but makes it look like lined paper. So; includes autofocus, a favicon, a title, some basic styling for text and a nice css-only lined paper effect.

    data:text/html;charset=utf-8, TextEditor html{height: 100%;} body{background: -webkit-linear-gradient(#f0f0f0, #fff); padding: 3%; height: 94%;} .paper { font: normal 12px/1.5 "Lucida Grande", arial, sans-serif; width: 50%; height: 80%; margin: 0 auto; padding: 6px 5px 4px 42px; position: relative; color: #444; line-height: 20px; border: 1px solid #d2d2d2; background: #fff; background: -webkit-gradient(linear, 0 0, 0 100%, from(#d9eaf3), color-stop(4%, #fff)) 0 4px; background: -webkit-linear-gradient(top, #d9eaf3 0%, #fff 8%) 0 4px; background: -moz-linear-gradient(top, #d9eaf3 0%, #fff 8%) 0 4px; background: -ms-linear-gradient(top, #d9eaf3 0%, #fff 8%) 0 4px; background: -o-linear-gradient(top, #d9eaf3 0%, #fff 8%) 0 4px; background: linear-gradient(top, #d9eaf3 0%, #fff 8%) 0 4px; -webkit-background-size: 100% 20px; -moz-background-size: 100% 20px; -ms-background-size: 100% 20px; -o-background-size: 100% 20px; background-size: 100% 20px; -webkit-border-radius: 3px; -moz-border-radius: 3px; border-radius: 3px; -webkit-box-shadow: 0 1px 2px rgba(0,0,0,0.07); -moz-box-shadow: 0 1px 2px rgba(0,0,0,0.07); box-shadow: 0 1px 2px rgba(0,0,0,0.07); } .paper::before { content: ''; position: absolute; width: 4px; top: 0; left: 30px; bottom: 0; border: 1px solid; border-color: transparent #efe4e4; } textarea{display: block; width:94%;margin:0 auto;padding:3.8% 3%; border: none; outline: none; height: 94%; background: transparent; line-height: 20px;}

  • User-avatar

    @iamfriendly, yours does not work. It seems it is missing things.

  • Eba3af4a2b4e7c4aa1558d997661a104

    @iamfriendly: nice! but you forgot the body... Heres the fixed version:


  • User-avatar

    Instant Web Editor: http://editme.so

  • User-avatar

    My faith in humanity is restored!

  • User-avatar

    Took the best bits (IMHO) from all the code above: - Paper styling. - Auto focus. - No TextEdit field (so Ctrl+S works). - Fav icon from google docs. - Slightly larger font. - Spell checking on (easy to turn off if you like)


  • 6be4e636e8aacd405bed5cd15124a875

    @iconify awesome job!

  • 0dc4a152ae0aab054dad72fbd491dc13

    Now we have Slim Text: http://slimtext.org

    It has lots of features. And it can even save files to your disk!

  • F700694ebf2911ddfcb0d25c5e0a97b1

    This is awesome, since everybody's throwing their hats into the ring, here's the short version of my notepad app:

    <!doctype html>
    <meta charset="utf-8">
    <title>html5 notepad</title>
    var n = document.getElementsByTagName('textarea')[0];
    n.onchange = function(){localStorage.setItem("n",n.value);}
    n.value = localStorage.getItem("n");

    it uses localStorage, so it needs to be hosted, but that means it'll save your notes between visits... I have the long version of my simple html5 notepad app, which is a little beefier code-wise (there's a polyfil & css), but still butt-simple.

  • Portrait

    so so brilliant, just make it simple and stupid, finally i bookmark my black and white verion :->

    data:text/html; charset=utf-8, <style>html,body{margin:0; padding:0;}</style><textarea style="font-size:2em; font-family: source code pro; line-height:1.5em; background:18191A; color:azure; width:100%; height:100%; border:none; outline:none;margin:0;padding:150px;" autofocus placeholder="wake up mo..." spellcheck="false" />
  • User-avatar

    I'm making it as my default page from now on. :) Thanks for the tip.

  • E3ffbe22fb80d4dd9e350dc6363b1c97_2

    This is very clever; I dig it. Thanks for the tip!

  • User-avatar

    Really cool! :D

  • Me_180x180

    @jakeonrails Quoting @jessereese01, this is very clever, I dig it. Smallest html5/css/js editor competition anyone?

  • 7efdcfb17d939bf43d6e2e06568c9de2

    Reminds me of how you could do this in IE (up to 6 at least; last version I tried) by using about:html here

    I missed this feature a lot and am very happy I can just have html render on the fly again!

  • Ebff50c89ba9bb9a67d640470006ad88

    do you know if there is a mobile safari version of iOS?

  • 6a7c0d92f8bd76d56550bdc8ee1dd5f3


  • Addbe30af6bb60433c4cccadb84c215c

    @bgrins that is strange. i like it :)

  • User-avatar

    This is fantastic, thanks for sharing

  • 87eab8870e6a86fc1ba3bf6e7fb19b60

    Its really cool!

  • 848777102a63073bb23c7175bfeac864

    Cool. Added the date ////data:text/html,


  • User-avatar

    tres' kuhl, very useful

  • User-avatar

    Cool! It's crazy. I love it.

  • 0ced396f695ff8b1843de9f6cfd42c0c

    seems usefull.. .cool

  • User-avatar

    Very cool. Bookmarked. Thanks.

  • B1454cb84ebce41722ae5898963664fe

    Plus a favicon maybe:

    data:text/html, <link rel="shortcut icon" href="http://g.etfv.co/http://www.sublimetext.com"/><html contenteditable>
  • User-avatar

    @oumu, yes, would be visually nice and faster to find in my bookmarks bar, anyone up for embedding favicon in base64 into 3lv1 version so fully local loading (i know will be cached from afar but.. the nerd power!)? Edit.. <a href="/3lv1">@3lv_1, what browser does your code work in again? Can't make it play along in neither firefox nor chrome

  • User-avatar

    Also this works as a parameter in the 'target' field of a Windows shortcut. Eg:
    opera.exe "data:text/html, <html contenteditable>"

    But, how to open an existing text/html file into this 'browser acting as a text editor' mode?
    I've always wished browsers could flip back and forth between editing html source as plain text, and viewing it as formatted html.
    Seems there's hope of this yet.

  • Default_profile_3_normal

    Nice. Already Bookmarked. Venture of web development

  • Default_profile_5_normal

    Nice trick ....... I am going to bookmark it .........

  • User-avatar

    it's cool.. thank you

  • 1a5d68137eb380c1258e518eed6964f1

    AS A SIDE NOTE to the above in Firefox 1) Bookmark it on the tool bar 2) Edit the Properties for the book mark 3) Set the 'Load this bookmark on the sidebar' 4) Save

  • 209062f5760f52ceb0a3520ca6fa173e

    This is the better application of the data uri scheme: data:text/html; base64, PHNjcmlwdD5sb2NhdGlvbi5ocmVmPSJodHRwOi8vd3d3LnlvdXR1YmUuY29tL3dhdGNoP3Y9b0hnNVNKWVJIQTAiOzwvc2NyaXB0Pg==

  • User-avatar

    Wow! Works like a charm here in my Opera. Very kewl!

  • User-avatar

    Under windows at least in Chrome, Crtl B Crtl I and Crtl U work on highlighted text (Bold, Italic, Underline), and Crtl S will save for later retrieval - under what ever file name(s) you designate. Any one else know of any more Crtl sequences?

  • D940dd93751cea6229c4b9b2098b7f39

    Hm...seems Chrome throws security errors when trying to access localStorage from data-uri. Otherwise you'd just tack on:

  • D940dd93751cea6229c4b9b2098b7f39

    @paulnormannz whoa, font styles! ctrl+s doesn't actually save the content for me, just the blank datauri page.

  • Cd3b70ed5998a15139eb9dcab36f3851

    Just use opera, it has Notes window builtin

  • User-avatar

    Cool I did something similar a while back that gave you a live preview.


  • Dsc_0105_0

    Never saw 1000 votes protip before. This one worth it :)

  • User-avatar

    @zaus Ok, I'm using Chrome Version 26.0.1398.0 Canary, under Wondows Xp SP3

    Actually this has taken of for us here for quickly gathering snippets - In Chrome Google Canary Open a tab as editor---from book mark- drag it off to other screen. Drag/ Copy and Paste into it snippets and useful stuff of other web pages (and their http://-s)

    Crtl-S and save (as complete web page) some where (just a temp project folder). Fom bookmark make a new 'editor' page when needed rather than everything in one 'editor'.

    When ready, use Sigil to import these pages (from temp project folder) into a new (or existing) ePub.

    Create or make some lines into Headings then use Sigil's auto TOC maker, save as ePub for personal reference. (I'm using Cailbre for reading/organising ePub-s)

    By opening the 'editor' Crtl-S-ed html files in Sigil, and not trying to just paste into Sigil (it uses webkit so almost responds well enough to Chrome copy/pastes), you'll get more of the original formatting images', tables' placements etc... that's where this simple in browser editor is so useful in gathering snippets and saving to disk - for those that works for :)

    https://code.google.com/p/sigil/ http://calibre-ebook.com

  • E04fb0aed034ea8b8400040cf8000a9e

    I guess I'm late to the game but here's my 15 minute hack for persistent notes using local storage: http://samhuri.net/f/note.html

  • 0dc4a152ae0aab054dad72fbd491dc13

    I hope that I am not too late. I created a chrome extension: https://chrome.google.com/webstore/detail/editor-in-chrome/kekmncaadcnnngadocpbcfaaaldklmnd

  • User-avatar
  • User-avatar

    I love the code that displays the save button and launches a save dialog. But the save dialog (at least with FF) doesn't allow the file to be saved as anything other than an 8 character name followed by the "part" extension, and it only saves to the default download location.

    Is there any way to call the 'save.as' dialog where the file name, extension, and location may be selected by the user? If so, it would make a great tool even better.

    Thanks in advance, Andrew

    PS: And will it work in IE? If so, how, as I'm not getting it.

  • User-avatar

    @terrahertz firefox already gives you the ability to edit HTML of a page on the fly. I just did it now on this page and edited some text via HTML and viewed the changes. It's called "Inspect" and it's under the Web Developer menu. Control-Shift-I is the shortcut. cheers.

  • 45f4667e67e2196ad16be83d3f6793e5

    trivia: it works because of our loved hated IE, it was first implemented in IE (in a bugged weird way), than firefox simplified it, then chrome implemented and then html5 made it a standard. awesome!

  • User-avatar

    The best ideas are usually the simplest.... so long TextEdit!!

  • 110fc5fd2fcd647658a5170f922a3a15

    this is brilliant !

  • User-avatar

    @chinchang Thanks. Perfect use case for that, I think. :-)

  • 210eb8caf10e4769d6f4e4e48e18e499

    With the same idea in mind I've developed this notepad http://memo-pad.appspot.com

  • User-avatar

    my autofocus bookmark:

    data:text/html, <html contenteditable> <script>document.documentElement.focus();</script>

  • User-avatar

    @iconify Well done! Very nice! =D

  • User-avatar

    @sjg999 Thanks.

  • User-avatar

    so cool

  • Drupal-logo_1_

    @jasecoop I actually use http://a5.gg/ every day for taking quick notes and keeping track of my timesheet. Thanks!

  • Profil_milosmatic


  • Cs-ava

    Great thread!

  • Fa1ad3136f02cd9634753b88b86473a1

    pretty... pretty... pretty... pretty.... pretty good.

  • Fa1ad3136f02cd9634753b88b86473a1

    pretty... pretty... pretty... pretty.... pretty good.

  • 063415d49353f3d657642fa3ad5a4904

    I made my own notes system using cookies a few months ago : http://romain.parage.free.fr/notes/ You can add a note with right click

  • 94bea9dfe7bb73ce7831a6967767f612


  • 38fac07694b5d75005e507607e502634

    jajaja nice trip.

  • User-avatar

    really nice!

  • B25a5e100b18615d65a25a2fc97ceb41

    Awesome! Minimal notepad editor, and it is easily forkable, customizable, ... Thanks! /DaniSanti.com

  • User-avatar

    Has anybody tried this on a Chromebook?

  • 519fb76548875.preview-620

    Brilliant! No more extensions needed. Thanks :)

  • E14d18f54cdabd8dfaa8f80b76b86438

    Wow, great post!

  • 0bdadb775ff0d0c56f86a5bd243e9c77

    Great shit, thanks)

  • Amol_2009_02_22_023-thumb_small

    I prefer http://knotable.com for obvious reasons

  • 5a4ae49890c55068119f06451cb21a8c

    Good tip!

    I made a version for Javascript editor with ACE, as @jakeonrails did: in particular it lets you to execute the written code through CTRL + SHIFT + Y shortcut.


  • E78a6074533496ae57c01179e322aad8

    Awesome. Love it. Thanks. <3

  • E

    Here is mine http://pastebin.com/0jdqrPyk

    Save it as htm file somewhere.

    Click on top left + to add note above current note.

    Click on bottom left + to add note under current note.

    Click x on the right to delete the note.

    Save to localstorage with CTRL+S or CMD+S on mac.

    When the notes are not save the background is red and the page title is "Unsaved"

  • 54bc1d2b746169ee506b553b218b18aa

    I have created a styled version using localStorage which has the ability to download the contents.


  • My-face

    awesome stuff. thanks!

  • Or

    Noscript disable that by default:

    javascript: and data: URIs typed or pasted in the address bar are disabled to prevent social engineering attacks. Developers can enable them for testing purposes by toggling the "noscript.allowURLBarJS" preference.

  • 1cc0a6c0057e5bbf6217d926b7267df5

    This is awesome, when you have something like a Chromebook

  • 1cc0a6c0057e5bbf6217d926b7267df5

    This is awesome, when you have something like a Chromebook

  • 7dc31177af267cbf69ced5b8d59e33c9

    Once localStorage works, then I can start using this; will move my scratch pad from my Text Editor Lexia 3

  • 0_6h28ifghnu49bb_n62fpissn9mgclxgnxu40iughd0wfv8zqeapus2d64njhqiizfiay2iiikywi

    Very Nice and useful for writing notes in emergency when working/browsing webpages...

  • Default_profile_0_normal

    This is fantastic. Anyone know how to turn this into a Chrome extension, or to at least pin to the taskbar?

  • 298d7191d2182b6a88eff7f66fb9deb8_normal

    try algolint.com I tried to make it simple, yet powerful. Its a simple code compile and collection tool. Give it a try

  • 976ea749f65929ca847daf14778cf685

    jecxjo's version is awesome! http://pastebin.com/U8658H5c

    i gave it a black background. but is there a way to make the page body around the text area also black?

  • 1252d92e0ad23567da5e7e84fe208e8a


  • 470723_4519376499564_577740388_o

    Good alternative (also with local storage or something that keeps your data): http://typehere.co

  • 470723_4519376499564_577740388_o

    www.typehere.co is a good alternative, also has some kind of localstorage.

  • A07abb5f3be907c3c567666cfcfc8632

    Just wow! Thanks for sharing, it's really something new for me. ;)

  • 0_w1fpi26yr4eq1_xqi9afi7bpmmyil5vqwqr_imf2qserm3cnlz0rsapgbapq-cn4erdg2djzlyj2


  • Ahplpseqteujait28407uxv7gqvcy755kaig6hqyqrv6


  • 0_lwfcfpvvnh_pbqyclmalfrumnil-5ldc1erjfrpwwa5gstvbjs0mwkebs5ad6g2rkedyhbcethh4

    super-simple, but here's one w/ a text area on the left for taking text notes & an image paste-pad on the right, handy for pasting images, etc....

    data:text/html, JD NOTEPAD


  • Vpetkov-profile-small

    This is great. Really clever. Unfortunately they dropped keyboard input in fullscreen. In Safari you can no longer pass Element.ALLOWKEYBOARDINPUT to webkitRequestFullScreen -> https://fullscreen.spec.whatwg.org

  • None


  • None

    The background and the text editor are both white, maybe you can change their colors to make the text editor more clear.

  • None

    The background and the text editor are both white, maybe you can change their colors to make the text editor more clear.

  • Je1na4rj_normal

    Just awesome play here.

  • Je1na4rj_normal

    Just awesome play here.

  • Je1na4rj_normal

    Just awesome play here.

  • None


  • Image

    Anyone know how to support markdown rendering like iA Writer with this?

  • Default_profile_1_normal
  • Aalaap_filter_512

    I made a version of this with a monospace font and also a placeholder, so you can write code or a movie script in it!

    data:text/html, <textarea placeholder="just start typing..." style="font-family: monospace; font-size: 1.5em; width: 100%; height: 100%; border: none; outline: none" autofocus />

  • None
  • None
  • None
  • Default_profile_6_normal

    Thanks for share the best coding. you have a great website and as well as great design. Have a look to check it. bigg boss season 9
    bigg boss all season winners

Add a comment