mathiasbynens/utf8.js

A robust JavaScript implementation of a UTF-8 encoder/decoder, as defined by the Encoding Standard.

Stars: 562
Forks: 113
Open beginner issues: 0
Indexed issues: 14

Dominant language: JavaScript
License: MIT
Last GitHub push: Dec 4, 2017
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

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14 open issues indexed

utf8 OpenHarmony Adaptation Proposal Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

mathiasbynens/utf8.js#43 · 4 reactions · Opened May 16, 2025
The README should probably mention that output only looks like UTF-8, but isn't actual UTF-8 Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

mathiasbynens/utf8.js#42 · 4 comments · 2 reactions · Opened Jul 20, 2022
Is there difference from more simple implementation? Open

Difficulty 3/5 1-2 days Newbie friendliness 20/100

mathiasbynens/utf8.js#40 · Opened Jun 25, 2021
wrong encoding???? Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

mathiasbynens/utf8.js#38 · Opened Apr 19, 2020
Is this ES6 module format compatible? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

mathiasbynens/utf8.js#34 · Opened Jul 10, 2018
Optimization: Check whether encoding/decoding is needed Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

mathiasbynens/utf8.js#31 · Opened Jul 12, 2017
Invalid continuation byte Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

mathiasbynens/utf8.js#30 · 10 comments · 3 reactions · Opened Jun 16, 2017
string.charCodeAt is not a function Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

mathiasbynens/utf8.js#26 · 4 comments · Opened Mar 4, 2017
generate-test-data.py fails pep8 compliance Open

Difficulty 1/5 Under an hour Newbie friendliness 48/100

mathiasbynens/utf8.js#24 · Opened Dec 25, 2016
bower.json is not up-to-date Open

Difficulty 1/5 Under an hour Newbie friendliness 55/100

mathiasbynens/utf8.js#14 · Opened Jan 25, 2016
Codepoint arrays and binary strings Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

mathiasbynens/utf8.js#7 · 9 comments · 1 reaction · Opened Dec 29, 2014
Performance? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

mathiasbynens/utf8.js#4 · 4 comments · Opened May 14, 2014
Add error-tolerant mode Open

Difficulty 4/5 3-5 days Newbie friendliness 40/100

mathiasbynens/utf8.js#2 · 1 reaction · Opened Jun 20, 2013
Add more tests Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

mathiasbynens/utf8.js#1 · 1 comment · Opened Jun 20, 2013

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