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What is a size efficient way to encode a JSON array of array of numbers into a URL

July 25, 2022

I have an array of array of numbers as data:

[[9,593,82,593,1360,593,82,582,1344,4676,1344,593,82,593,82,578,1344,593,82,577,1344,593,82,567,1328,593,82,4662,1328,593,82,4662,1328,593,82,577,1344,593,82,4674,1344,582,1344,594,1360,4693,1360,599,1360,4705,1376,582,1344,581,1344,581,1344,4677,1344,4678,1344,593,1360,4690,1360],
[9,593,82,593,1360,593,82,582,1344,4676,1344,593,82,593,82,578,1344,593,82,577,1344,593,82,567,1328,593,82,4662,1328,593,82,4662,1328,593,82,577,1344,593,82,4674,1344,582,1344,594,1360,4693,1360,599,1360,4705,1376,582,1344,581,1344,581,1344,4677,1344,4678,1344,593,1360,4690,1360]]

I can import this data into my app and load the state.

So I want to encode this into a URL so it’s easier to share.

What is the most size efficient way to encode this data into a URL.

>Solution :

You can use encryption and decryption methods to reduce the size of the input by ~ 65% to encode it in the URL

first I stringify the input then encrypt it

I also attached the description method

const input = [[9,593,82,593,1360,593,82,582,1344,4676,1344,593,82,593,82,578,1344,593,82,577,1344,593,82,567,1328,593,82,4662,1328,593,82,4662,1328,593,82,577,1344,593,82,4674,1344,582,1344,594,1360,4693,1360,599,1360,4705,1376,582,1344,581,1344,581,1344,4677,1344,4678,1344,593,1360,4690,1360],
[9,593,82,593,1360,593,82,582,1344,4676,1344,593,82,593,82,578,1344,593,82,577,1344,593,82,567,1328,593,82,4662,1328,593,82,4662,1328,593,82,577,1344,593,82,4674,1344,582,1344,594,1360,4693,1360,599,1360,4705,1376,582,1344,581,1344,581,1344,4677,1344,4678,1344,593,1360,4690,1360]]

let firstStep = JSON.stringify(input)


let secondStep = en(firstStep);

console.log("The original input lost: " + (1-(secondStep.length / firstStep.length))+ " % of it's size"); // this is data encription ratio

// decrept

console.log("decrypted:  "+de(secondStep))

function en(c){var x='charCodeAt',b,e={},f=c.split(""),d=[],a=f[0],g=256;for(b=1;b<f.length;b++)c=f[b],null!=e[a+c]?a+=c:(d.push(1<a.length?e[a]:a[x](0)),e[a+c]=g,g++,a=c);d.push(1<a.length?e[a]:a[x](0));for(b=0;b<d.length;b++)d[b]=String.fromCharCode(d[b]);return d.join("")}

function de(b){var a,e={},d=b.split(""),c=f=d[0],g=[c],h=o=256;for(b=1;b<d.length;b++)a=d[b].charCodeAt(0),a=h>a?d[b]:e[a]?e[a]:f+c,g.push(a),c=a.charAt(0),e[o]=f+c,o++,f=a;return g.join("")}