You call a string, characters (in compressCharacters ), string (in compressString ), signature, and e in the forEach. Anything you want (including strings), can be fed into it and the result will be a very efficient UTF16 string containing the input after heavy compression (and optionally encryption after the compression but before the Base32768.) How can I validate an email address in JavaScript? Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Can I compress data for Database with swift? The question is about compressing/decompressing strings - it just happens that my string is minified js. GitHub Instantly share code, notes, and snippets. Most software layers should have no problems with that (ab)use but note that in UTF-16 range 0xD800-0xDFFF is reserved for a special use (surrogate pairs) so some combinations are formally "encoding errors" and could in theory be stopped or distorted. 'aab' can be compressed to 'a2b1' but it increases its length to 4 so our function should return 'aab', Enjoy unlimited access on 5500+ Hand Picked Quality Video Courses. Close enough for pedagogical purposes.) Something that produces strings as compact as possible to store in localStorage. JavaScript String compression 3,456 views Aug 20, 2017 21 Dislike Share Save Code with tkssharma 13.2K subscribers Welcome to my Channel : You will learn everything from basics to advance level. It would be simpler to compress the database file as a whole, but I don't think that's possible from within a Chrome application. String compression in JavaScript. Asking for help, clarification, or responding to other answers. Do you happen to be looking for http://www.iteral.com/jscrush/ ? Most of the names are describing the type and not the abstracted data that they hold. How do I make the first letter of a string uppercase in JavaScript? We are required to write a JavaScript function that takes in a string that might contain some continuous repeating characters. This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. (I wish I could have accepted an answer by Piskvor but it was only a comment). @PresianNedyalkov you need to use a function from. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, Compress object to reduce multiplayer game bandwidth, encrypting / shortening a long string in JS, Convert UTF-8 String with only 8 Bits per Character. I've chosen to use the first 85 chars from 35 to 126 (skipping 92) so that the resulting compressed data can be simply wrapped in double quotes. Create a new string, which will hold the compressed version of the original one. Apart from size, are there any other differences between your test cases and your actual data, like encoding, for instance? Check if a variable is a string in JavaScript. I'm looking for a JavaScript function that given a string returns a compressed (shorter) string. Learn more about bidirectional Unicode characters. String Compression Medium Given an array of characters chars, compress it using the following algorithm: Begin with an empty string s. For each group of consecutive repeating characters in chars: If the group's length is 1, append the character to s. There is a small section on the home page to help you port the lib if you need to: Thanks pieroxy, I tried your library but it's not efficient with short strings. There are 3 other projects in the npm registry using js-string-compression. compute x from the base-85 number and then extract the 4 base-256 digits (i.e. Thanks for contributing an answer to Stack Overflow! Refresh the page, check Medium 's site status, or find. Working with Strings gathered from outside my website, I needed something that can take any kind of string as an input, including any UTF characters above 255. link: https://pieroxy.net/blog/pages/lz-string/index.html E.g. Did neanderthals need vitamin C from the diet? You can store 2.5M characters (5M on Firefox) and using the entire UTF-16 space still gives you more data. does not work - does not correctly recreate the input: Much more compressed version (en=264, de=179 bytes): you should initialize vars f,o to avoid a ReferenceError: Your code fails with UTF-8 Characters. Firstly, yeah, they do stay . What does "use strict" do in JavaScript, and what is the reasoning behind it? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. ), https://javabypatel.blogspot.com/2016/07/string-compression-in-place-run-length-encoding-program.html. Your lack of support for those is likely the reason your compression ratio is better than mine. For even further reduction in size, you can decode your base64 strings into their full 8-bit binary, compress them with some known compression algorithm (e.g. We are required to write a JavaScript function that takes in a string that might contain some continuous repeating characters. It seemed to work when I tested it "by hand" with short example strings (decode === encode), and it's reasonably fast too, in Chrome. And we know that a number can not be both n > 0 && n < 1 and n > -1 && < 0 at the same time. Eg. Remember, though, that if a letter had no consecutive neighbors, we dont add a number to it. In a toy 4KB JavaScript demo I wrote for fun I used an encoding for the result of compression that stores four binary bytes into five chars chosen from a subset of ASCII of 85 chars that is clean for embedding in a JavaScript string (85^5 is slightly more than (2^8)^4, but still fits in the precision of JavaScript integers). Create a new string, which would hold the compressed version. Minecraft command blocks can go up to 32767 characters, but some older versions of the game only allowed in-game use of strings half that size though by using MCEdit you could hit the 32767 size, though this issue was soon fixed. One of the tasks was to write the so-called string compression algorithm. It was on HackerRank, so you could choose whichever style you pleased. CGAC2022 Day 10: Help Santa sort presents! String compression in JavaScript Ask Question Asked 11 years, 11 months ago Modified 6 months ago Viewed 96k times 59 I'm looking for a JavaScript function that given a string returns a compressed (shorter) string. You don't care about the blah-blah? Examples of frauds discovered because someone tried to mimic a random sequence, Name of a play about the morality of prostitution (kind of). javascript xmldom cyrilic path Javascript String Compression. For a more extreme example, the full chemical name of the Titin protein is 189 thousand letters. the bytes). Add a new light switch in line with another switch? JavaScript String compression string.compress.js /* @fliptopbox LZW Compression/Decompression for Strings Implementation of LZW algorithms from: http://rosettacode.org/wiki/LZW_compression#JavaScript Usage: var a = 'a very very long string to be squashed'; var b = a.compress (); // 'a verylong stri to bequashed' long alphabetical strjng to short strings compression. Note that this is not applicable to the size of a JavaScript file, but just applicable to the size in memory - or in localStorage - taken by a String object. I'm looking for a JavaScript function that given a string returns a compressed (shorter) string. I've found an implementation of LZSS in JavaScript here: http://code.google.com/p/u-lzss/ ("U-LZSS"). Interfaces CompressionStream The Compression Streams API provides a JavaScript API for compressing and decompressing streams of data using the gzip or deflate formats. And would it be possible to adjust some parameters in order to move that upper limit? Why does my stock Samsung Galaxy phone/tablet lack some features compared to other Samsung Galaxy models? And, of course, dont forget to return our compressedString! alistapart.com/articles/better-javascript-minification, alistapart.com/articles/javascript-minification-part-II. I compress a 250 bytes string, I obtain a 300 bytes output. In this video today we discuss about how can we compress the string with the help of javascript. Are the S&P 500 and Dow Jones Industrial Average securities? In code the following builds the list of 85 "safe" characters: Then to encode 4 bytes (b0, b1, b2 and b3 each from 0255) into 5 characters the code is: To decode you do the reverse, i.e. Even using ASCII representations higher than 1 byte per character (like UTF16) as input still gives the savings. A small bolt/nut came off my mtn bike while washing it, can someone help me identify it? for 'hello world' I should get 'H4sIAAAAAAAACstIzcnJVyjPL8pJAQCFEUoNCwAAAA=='. Every string is internally encoded in UTF-16, and that's what all client-side databases will store. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Has anyone seen or written code to compress/decompress strings in this way? To make myslelf clear, I'm asking about compressing and decompressing strings in javascript - not minifying. The function should compress the string like this . So I need to compress the strings before they enter the database. Then, by embedding the string in my script, performing the substitution to restore it, and then 'evaling' it, I can get the original behaviour. js-string-compression Package provides javascript for string compression Install npm install js-string-compression Usage var jsscompress = require("js-string-compression"); var raw_text = "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Apologies. And later, we will cover the LZString way of solving the task. Purchase JavaScript Code Obfuscator. What happens if you score more than 99 points in volleyball? maybe you've already read these, but here are two recent articles from A List Apart on how to write code that minifiers can compress more easily: @Jenni - cheers, I will read that. some LZW implementations which gives you back arrays of numbers (terribly inefficient to store as tokens take 64bits) and don't support any character above 255. some other LZW implementations which gives you back a string (less terribly inefficient to store but still, all tokens take 16 bits) and don't support any character above 255. an LZMA implementation that is asynchronous and very slow - but hey, it's LZMA, not the implementation that is slow. At what point in the prequels is it revealed that Palpatine is Darth Sidious? The test I received added an additional rule. databases) don't have problems. Clone with Git or checkout with SVN using the repositorys web address. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. To learn more, see our tips on writing great answers. However, I'm struggling to output the compressed data to a string, i.e. The GitHub repository. How do I do that? javascript compression Share Improve this question Follow asked Jul 22, 2011 at 14:13 Charles 11k 13 65 103 By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. How to use a VPN to access a Russian website that is banned in the EU? Does balls to the wall mean full speed ahead or full speed ahead and nosedive? How is the merkle root verified if the mempools may be different? You could start buffering, but in many cases that would defeat the purpose of still sending the data. For testing purposes I tried to zip the file storing the database, and it shrank by a factor of five, so I figured it would help keep the database smaller if I compressed the things it stores. Built in compression means that JavaScript applications will not need to include a compression library, which makes the download size of the application smaller. Video Tutorial. Would salt mines, lakes or flats be reasonably found in high, snowy elevations? MOSFET is getting very hot at high frequency PWM. So I used that. Generate random string/characters in JavaScript. I'm developing a Chrome web application that saves long strings (HTML) to a local database. But when given big strings (100 ko) it seems to garble/mix up the last half of the string. The demo. Goal lz-stringwas designed to fulfill the need of storing large amounts of data in localStorage, specifically on mobile devices. function stringCompression (str) { if (str.length ==0) { console.log('Please enter valid string.'); return; } var output = ''; var count = 0; for (var i = 0; i < str . I think you should also look into lz-string it's fast a compresses quite well and has some advantages they list on their page: The reasons why the author created lz-string: There are implementations of this lib in other languages, I am currently looking into the python implementation, but the decompression seems to have issues at the moment, but if you stick to JS only it looks really good to me. Did neanderthals need vitamin C from the diet? How do I include a JavaScript file in another JavaScript file? How many transistors at minimum do you need to build a general-purpose computer? Nope. So none of the libraries I could find online worked well for my needs. The packets are just JSON, so the first thing to try is to compress the data with gzip prior to sending it. How do I include a JavaScript file in another JavaScript file? Well do this with a while loop, which will have two conditions: if i is less than messageArrays length -1, AND if the current iteration is the same as its neighbor. Here, we will discuss two ways of compressing a string. My first thought was to make a character map (i.e., an object with letters and their corresponding numbers). How to check whether a string contains a substring in JavaScript? Split the string up into an array so we can properly iterate through it. Remove extra spaces in string JavaScript. I'm not aware of any php implementation. function compress (string, encoding) { const bytearray = new textencoder ().encode (string); const cs = new compressionstream (encoding); const writer = cs.writable.getwriter (); writer.write (bytearray); writer.close (); return new response (cs.readable).arraybuffer (); } function decompress (bytearray, encoding) { const cs = new Feel like thinking about it? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. a GZip implementation not really meant for browsers but meant for node.js, which weighted 70kb (with deflate.js and crc32.js on which it depends). String Compression - LeetCode Solution Submissions 443. Source code: https://github.com/HUANGXUANKUN/leetcode-interview-prep/tree/main/string-compressionOther LeetCode solutions in JavaScript https://github.com/HU. At Piskvor's suggestion, I tested the code found in an answer to this question: JavaScript implementation of Gzip (top-voted answer: LZW implementation) and found that: it works; it reduces the size of the database by a factor of two Don't add useless or redundant code. To learn more, see our tips on writing great answers. Working on mobile I needed something fast. @davide That's strange because this lib is specially tailored for short strings. Here are encode (276 bytes, function en) and decode (191 bytes, function de) functions I modded from LZW in a fully working demo. String compression in JavaScript. How do I make the first letter of a string uppercase in JavaScript? Start using js-string-compression in your project by running `npm i js-string-compression`. Ready to optimize your JavaScript with Rust? So I was wondering if I could generalise this last method. how to find the most common patterns in a string, and how to write a tiny decompressor in javascript for strings where these occurences have been replaced with single chars. Here, while both conditions are met, we increase the count and the index position. Split the string into an array to be able to iterate through it. Yep, done that alreadybut also, the closure compiler does it as part of it's optimisation as well. var a = 'a very very long string to be squashed'; var b = a.compress(); // 'a verylong stri to bequashed', var c = b.uncompress(); // 'a very very long string to be squashed', var d = a.compress(true); // return as Array, console.log(d); // [97, 32, 118 . 101, 100] an Array of ASCII codes, //Do not use dictionary[wc] because javascript arrays, //will return values for array['pop'], array['push'] etc. Not even NaN has that power! Not the answer you're looking for? lz-string: JavaScript compression, fast! I'm trying to enter a javascript competition where the script has to be <= 1kb in size. We make use of First and third party cookies to improve our user experience. What is this fallacy: Perfection is impossible, therefore imperfection should be overlooked, Obtain closed paths using Tikz random decoration on circles, it reduces the size of the database by a factor of two. Connect and share knowledge within a single location that is structured and easy to search. To review, open the file in an editor that reveals hidden Unicode characters. String Compression. Just paste a Smiley on the input string, and it gets messed up after decompression. Given an array of characters, compress it in-place. The function should compress the string like this 'wwwaabbbb' -> 'w3a2b4' 'kkkkj' -> 'k4j' And if the length of the compressed string is greater than or equal to the original string we should return the original string. Our problem be like a2b3c4 and the desired output will be "a. The length after compression must always be smaller than or equal to the original array. If I copy/paste your comment for example (200 chars so 400 bytes) and compress it with. If the storage limit is based on UTF-16 characters then a large safe subset could be looked for if you care about escaping or UTF-16 compliance or you could just try to use each char as 0..65535 if everything else involved (e.g. This is how you compress a string in a language like Python: compressed = zlib.compress (str) (Yes, yes, this is not gzip compression. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. Somehow, within this function, we need to correlate a number with a letter. From that we can deduce that either only one of the regexes matches . But I'm still interested in this idea of compressing/decompressing inside the script. Are there breakers which can be triggered by an external signal and have to be reset by hand? LZW Compression/Decompression for Strings, http://rosettacode.org/wiki/LZW_compression#JavaScript. Latest version: 1.0.1, last published: 6 years ago. That's because lossless compression algorithms are pretty good with repeating patterns (e.g whitespace). Here is a link to a demo comparing it with LZMA level 1. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. @6502 The limit in localStorage is defined in terms of characters, not in bytes. When would I give a checkpoint to my D&D party that they can return to if they die? Love podcasts or audiobooks? This seems related - I wouldn't say duplicate, but close enough to do what you need: Apparently, the original author has some problem with putting comments, @Piskvor: you're right, it's a very close question; I don't know how I didn't find it before (I really tried! I'm looking for a JavaScript function that given a string returns a compressed (shorter) string. I am not sure I am doing a good conversion between streams and strings, but here is my try to use the new API: At Piskvor's suggestion, I tested the code found in an answer to this question: JavaScript implementation of Gzip As a result, you can get (almost) zlib compression rate's without any buffering. Affordable solution to train a team and make them project ready. drawcode / string.compress.js Forked from fliptopbox/string.compress.js Created 4 years ago Star 0 Fork 0 JavaScript String compression Raw string.compress.js /* @fliptopbox LZW Compression/Decompression for Strings Implementation of LZW algorithms from: function stringcompression (str) { if (str.length ==0) { console.log ('please enter valid string.'); return; } var output = ''; var count = 0; for (var i = 0; i < str.length; i++) { count++; if (str [i] != str [i+1]) { output += str [i] + count; count = 0; } } console.log (output); } stringcompression (''); //please enter valid Ready to optimize your JavaScript with Rust? That's exactly the sort of thing I was talking about. It's extremely likely that the string version of the number will be a short string. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. I'm not sure I understand what you mean. I took a code challenge as part of an interview process recently. I just released a small LZW implementation especially tailored for this very purpose as none of the existing implementations did meet my needs. I think it would be better to lose some compression and using plain 7-bit ASCII as the destination if over-the-wire size is important. Why would Henry want to close the breach? see javascript implementation of gzip), and then base32k encode the compressed output. Find centralized, trusted content and collaborate around the technologies you use most. We just care about if the same letter follows directly after. Keep in mind that in JavaScript all strings are. It implements the adaptive huffman algorithm with a tokenizer that's been tweaked to perform well on JSON strings. Asking for help, clarification, or responding to other answers. Not the answer you're looking for? Solution 2. There is no smaller or faster routine available on the internet than what I am giving you here. Instantly share code, notes, and snippets. I actually got my script down to an acceptable size. How does legislative oversight work in Switzerland when there is technically no "opposition" in parliament? Is this an at-all realistic configuration for a DHC-2 Beaver? Anyway, 829KiB of plain text is far larger than the 32767 limit, but BWTC32Key makes it fit into less than 16K characters. For who is interested the full decompression code is, (note that I dind't test this reformatted/commented version, typos may be present). So whether it uses UTF-8 or UTF-16 doesn't really matter in the end. function compress (string) { let compressed = "" let stringArray = string.split ("") for (let i = 0; i < stringArray.length; i++) { } } Next, we would need to keep track of several things within the for loop: For testing purposes I tried to zip the file storing the database, and it shrank by a factor of five, so I figured it . Learn on the go with our new app. A small bolt/nut came off my mtn bike while washing it, can someone help me identify it? Minifying and eval is allowed, so I've run it through google's closure compiler (which does slightly better than any others I've tried). Bambax - You can always ask @Piskvor to make an answer so you can accept it. If the string was abbccddd, compress it to ab2c2d3. In other words, if there was only one kind of letter consecutively, dont give it a number. You can select the most suitable payment method: credit card, bank transfer, check, PayPal etc.. Paying a license fee, you get the right to use the program for life and to get free updates within . What is the difference between String and string in C#? rev2022.12.9.43105. That's another minifier. Would salt mines, lakes or flats be reasonably found in high, snowy elevations? Making statements based on opinion; back them up with references or personal experience. Is it possible that U-LZSS expects short strings and can't deal with larger strings? You abbreviate an array to arr in one function and call it newArray in another. Avoid Unexpected string concatenation in JavaScript? The current count for the current consecutive letter(s), which will be set to one initially. Which equals operator (== vs ===) should be used in JavaScript comparisons? Your answer is all well and good, but in JavaScript there is no UTF-8 nor any 7-bit ASCII. I'm developing a Chrome web application that saves long strings (HTML) to a local database. gist.github.com/mr5z/d3b653ae9b82bb8c4c2501a06f3931c6, https://github.com/wicg/compression/blob/master/explainer.md, https://blog.chromium.org/2019/12/chrome-80-content-indexing-es-modules.html. How do I remove a property from a JavaScript object? Find centralized, trusted content and collaborate around the technologies you use most. (TA) Is it appropriate to ignore emails from a student asking obvious questions? I can use BWTC32Key to get it down to around 640. Learn more, Compressing and Decompressing files in C#, Compressing and Decompressing files using GZIP Format in C#, Hyphen string to camelCase string in JavaScript, Keeping only alphanumerals in a JavaScript string in JavaScript, Interchanging a string to a binary string in JavaScript. @4esn0k thanks for the answer! How could my characters be tricked into thinking they are on Mars? Here we are converting a number to a string and calling a regex on it. I'm developing a Chrome web application that saves long strings (HTML) to a local database. A character you call element. NOTE: in the torus code I used a slightly different charset, instead of skipping 92 \ I replaced it with 126 ~. The text to be compressed should be English sentences: mostly lower-case letters, spaces, and punctuation with the occasional upper-case letters, digits, and newlines. So you could take a sentence, and then use split to put all the words into different elements of an array, like this: <script language="Javascript"> var sentence="This is where music goes to die."; var words=sentence.split (" "); Discuss for 97. compress a string - One line regex solution | BFE.dev - Offer - BFE.dev! The database itself in Chrome is an implementation of Sqlite and does not uses any kind of compression AFAIK. One of the most useful commands in Javascript is split, which is used to divide a string into an array. The library not taking 70kb was a definitive plus. By using this website, you agree with our Cookies Policy. Does the collective noun "parliament of owls" originate in "parliament of fowls"? So, were given a message and a function to begin with. Ill be walking through how to complete this algorithm in JavaScript. That looks interesting. None of the minifiers I've tried work as well as Google's (including packer), which I'm already using. It looks like just looking for trouble. Are defenders behind an arrow slit attackable? 78,625 Solution 1. You signed in with another tab or window. Is there a PHP library compatible with your LZW inplementation? Have you considered shortening your code by creating a shortcut for those JavaScript objects and methods that you use a lot in your code: var d = document; var id = d.getElementById; And then instead of writing document.getElementById ("foo") You can write id ("foo"); Share Follow answered Aug 15, 2010 at 4:50 Behrang 45.6k 25 115 155 3 rev2022.12.9.43105. BWTC32Key uses a BZip-family improvement and Base32768 to get extremely high efficiency, and its optional encryption is AES256-CTR to avoid padding. How to smoothen the round border of a created buffer to make it look more natural? This way, we go through all equivalent, consecutive occurrences of a letter, and only move onto the next new letter when the while loops conditions are no longer met. ** I used that for compressing local storage data ( as local storage has only a 5MB limit ) ** the results may not be visible for shorter strings, but you can try it. Have you considered shortening your code by creating a shortcut for those JavaScript objects and methods that you use a lot in your code: Tokenisation is the preferred method for compressing scripts as it works with the individual keywords and other names. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . LeetCode Challenge / Javascript. The compression doesn't have to be great but shorter URLs would be nicer. Examples of frauds discovered because someone tried to mimic a random sequence. I'm developing a Chrome web application that saves long strings (HTML) to a local database. you can try 'lz-string' for compressing and de-decompressing string in javascript. What does "use strict" do in JavaScript, and what is the reasoning behind it? I found it useful for the same competition (I assume it is js1k). Either way, we have a couple of initial steps: Within the for loop, we need to keep track of two things for each iteration: Next, we need to see if the currentLetters next neighbor is the same letter as itself. Thanks but I don't understand your answer. (top-voted answer: LZW implementation) and found that: which is less than 5 but better than nothing! Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. I recently had to save huge JSON objects in localStorage. Connect and share knowledge within a single location that is structured and easy to search. How do I replace all occurrences of a string in JavaScript? Minor nitpick: the function you're using. How to check whether a string contains a substring in JavaScript? Package implements string compression algorithms. One little nitpick for clarity: the parameter to the CompressionStream/DecompressionStream constructor you named 'encoding' but it's. Compressed data is almost random and if I for example don't skip 92 and just repeat it then the decoder shortens a bit because of the simplification but still the HTML size gets quite a bit bigger than 4096 bytes and is clearly totally unacceptable :-D to say it better I found that escaping compressed data is worse than choosing an encoding that doesn't need escaping. I'm looking to compress and decompress strings. And it is implemented in Chrome 80 (right now in Beta) according to a blog post at https://blog.chromium.org/2019/12/chrome-80-content-indexing-es-modules.html . String Compression Algorithm: JavaScript Style | by Rebecca Rosenberg | Medium 500 Apologies, but something went wrong on our end. ); I will look into the leads there and report here (some time next year ;-). If that U-LZSS cannot handle long strings its simply buggy and incorrect and shouldnt be used. How do I remove a property from a JavaScript object? The question youll receive will basically say: Compress a given string aacccddd to a2c3d3. The one I downloaded returns empty string for data generated in JS. For testing purposes I tried to zip the file storing the database, and it shrank by a factor of five, so I figured it would help keep the database smaller if . Thanks for contributing an answer to Stack Overflow! Initially, we will highlight the Huffman algorithm. But I've found that if I convert the script to a string, and replace long words like 'function' and 'return' with single chars, I can reduce that even further. Now all we need to do is add this letter and corresponding number to our compressedString. Does a 120cc engine burn 120cc of fuel a minute? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Use the LZString Library to Compress String in JavaScript In JavaScript, there can be a wide range of compression, the compression of files like gzip, and many more. Try experimenting with textfiles before implementing anything because I think that the following does not necessarily hold: so I figured it would help keep the database smaller if I compressed the things it stores. Agree Most of this is done by the closure compiler - there are very few javascript keywords I'm using (function, return etc) but the closure compiler automatically makes all function names just 1 letter long, etc. Any way to deal with this? Why is apparent power not measured in Watts? Ordering online is easy and secure. It seems, there is a proposal of compression/decompression API: https://github.com/wicg/compression/blob/master/explainer.md . That's what I'm using going forward, and I will probably try to improve the library at some point. EDIT Making statements based on opinion; back them up with references or personal experience. I ran my 829KiB compendium of homemade Minecraft command block commands from eons ago through BWTC32Key, and I got a 13078 character output string. Connecting three parallel LED strips to the same power supply. However, in this case, we dont care about how many of each letter are actually in the string. How do I tell if this single climbing rope is still safe for use? localStoragebeing usually limited to 5MB, all you can compress is that much more data you can store. Deploying a Jupyter Notebook into a Real App, Which JavaScript framework should you choose (a simple and highly opinionated guide! How do I replace all occurrences of a string in JavaScript? This makes compressed data safe for example for JSON without need of any escaping. At what point in the prequels is it revealed that Palpatine is Darth Sidious? And if the length of the compressed string is greater than or equal to the original string we should return the original string. Great answer! That's where shorty.js comes in. 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