Stuk/jszip

Create, read and edit .zip files with Javascript

Stars: 10.4k
Forks: 1.3k
Open beginner issues: 3
Indexed issues: 357
Avg merge: 9h 44m
Merged PRs (30d): 3

Dominant language: JavaScript
License: No license data
Last GitHub push: Sep 9, 2026
Latest indexed: Sep 20, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

Remove JSZip.defaults Open

breaking

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

Stuk/jszip#973 · Opened Sep 8, 2026
Deprecate `JSZip.defaults` Open

deprecation

Difficulty 4/5 3-5 days Newbie friendliness 58/100

Stuk/jszip#972 · Opened Sep 8, 2026
isStream does not recognize standard Node.js Writable Streams (compatibility issue) Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

Stuk/jszip#954 · Opened Jul 10, 2025
Potential for unexpected behavior in utils.inherits regarding pre-existing child prototype properties and constructor Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

Stuk/jszip#951 · Opened Jun 9, 2025
Potential for unexpected output from base64.encode with non-ASCII string inputs Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

Stuk/jszip#950 · Opened Jun 6, 2025
Potential for shared state in this.files after clone() in jszip/lib/index.js Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

Stuk/jszip#949 · Opened Jun 5, 2025
extract blob with mime type Open

feature

Difficulty 3/5 1-2 days Newbie friendliness 45/100

Stuk/jszip#948 · Opened Apr 22, 2025
Use modern JavaScript syntax Open

breaking feature

Stuk/jszip#946 · 1 comment · 1 assignee · Opened Mar 28, 2025
Encryption Support Open

feature

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

Stuk/jszip#943 · 1 comment · 1 reaction · Opened Mar 26, 2025
JSZip producing archives with bad crc32 / zipfile offset in some instances Open

bug

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

Stuk/jszip#936 · Opened Dec 17, 2024
The date in the exported file is incorrect Open

bug

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

Stuk/jszip#935 · 3 comments · Opened Nov 13, 2024
generateAsync does not work with Tampermonkey Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Stuk/jszip#934 · 7 comments · 7 reactions · Opened Oct 29, 2024
Compression default should be `DEFLATE`, not `STORE` Open

feature

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

Stuk/jszip#931 · 1 reaction · Opened Sep 25, 2024
file treating folder Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 30/100

Stuk/jszip#930 · Opened Aug 9, 2024
How to pass the loadAsync method into arraybuffer Open

question/support

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

Stuk/jszip#928 · Opened Jun 17, 2024
Can't unzip some zip files Open

bug

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

Stuk/jszip#925 · 2 comments · Opened May 9, 2024
Add asyncIterator support to NodejsStreamOutputAdapter Open

feature

Difficulty 3/5 1-2 days Newbie friendliness 45/100

Stuk/jszip#923 · Opened Mar 27, 2024
ZIP64 Support broken Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Stuk/jszip#922 · 2 comments · Opened Mar 25, 2024
Error: End of data reached Open

question/support

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

Stuk/jszip#920 · Opened Feb 28, 2024
escape and unescape are deprecated Open

feature

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

Stuk/jszip#919 · Opened Feb 4, 2024
Can't use ReadableStream from generateNodeStream in the PutObjectCommand of s3 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

Stuk/jszip#918 · Opened Feb 1, 2024
Zipping 1GB+ and splitting to chunks is slow - is there a way to speed it up? Open

performance

Difficulty 4/5 3-5 days Newbie friendliness 30/100

Stuk/jszip#916 · Opened Jan 27, 2024
Math.random() usage Open

breaking feature

Difficulty 2/5 1-3 hours Newbie friendliness 43/100

Stuk/jszip#914 · 1 comment · Opened Dec 15, 2023
Large zip file breaks with loadAsync Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Stuk/jszip#912 · 5 comments · 4 reactions · Opened Oct 31, 2023
Reading Folder Doesn't Work Open

bug

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

Stuk/jszip#911 · Opened Oct 30, 2023
Can we generate LF instead of CRLF Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

Stuk/jszip#910 · 1 reaction · Opened Oct 6, 2023
JSZip v3.10+ breaks in some sandboxed browser environment because dependency setimmediate breaks Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Stuk/jszip#909 · 2 comments · 7 reactions · Opened Sep 29, 2023
Same zip different zipContents when loadAsync Open

bug

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

Stuk/jszip#908 · Opened Sep 16, 2023
Unable to open docx file in Node Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

Stuk/jszip#907 · 2 reactions · Opened Sep 1, 2023
Byte alignment of resulting zip archive Open

feature

Difficulty 4/5 3-5 days Newbie friendliness 38/100

Stuk/jszip#905 · Opened Aug 13, 2023
zipobject internalstream method not present in type definition file Open

bug

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

Stuk/jszip#898 · Opened May 29, 2023
Microsoft font licenses Open

question/support

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

Stuk/jszip#897 · Opened May 17, 2023
setImmediate function is been hijack by SinonJS package when it's installed on the same project as well Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

Stuk/jszip#896 · Opened May 17, 2023
Error: Corrupted zip or bug: expected 19 records in central dir, got 0 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Stuk/jszip#892 · 4 comments · 2 reactions · Opened Mar 31, 2023
Is it allowed to add a file providing a ReadableStream? Open

question/support

Difficulty 3/5 1-2 days Newbie friendliness 42/100

Stuk/jszip#891 · 2 comments · 3 reactions · Opened Feb 23, 2023
Works fine locally but can't get past new JSZip() instance when deployed on server Open

bug

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

Stuk/jszip#890 · 3 comments · 1 reaction · Opened Feb 15, 2023
Webinspect Medium Issues，HTML5: Overly Permissive Message Posting Policy Open

bug

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

Stuk/jszip#889 · 2 reactions · Opened Feb 10, 2023
Update Pako to 2.1.0 Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

Stuk/jszip#886 · 4 reactions · Opened Jan 19, 2023
Using JSZip in an Angular 14 library Open

question/support

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

Stuk/jszip#885 · 2 comments · Opened Jan 19, 2023
Corrupted zip : compression \x08 unknown Open

bug

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

Stuk/jszip#882 · Opened Jan 6, 2023
No support for web streams, only node Open

feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Stuk/jszip#879 · 1 comment · 4 reactions · Opened Dec 16, 2022
It does not support opening the resource manager that comes with windows Open

bug

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

Stuk/jszip#877 · 1 comment · Opened Nov 30, 2022
Possible to get real time progress when file is downloading? Open

question/support

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

Stuk/jszip#876 · Opened Nov 19, 2022
Invalid local file header offset for large files Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

Stuk/jszip#875 · 1 reaction · Opened Nov 17, 2022
stuk.github.io: add dark theme Open

feature

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

Stuk/jszip#873 · Opened Nov 10, 2022
i want to save jszip in localStorage when browser refresh，but i don‘t know how to generateAsync localStorage jszip Open

bug

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

Stuk/jszip#872 · Opened Nov 9, 2022
When I use BASE in my htm application, browser shows a directory navigation page Open

question/support

Difficulty 3/5 1-2 days Newbie friendliness 30/100

Stuk/jszip#871 · Opened Nov 7, 2022
Trying to download and zip multiple big files using JsZiputils Open

question/support

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

Stuk/jszip#866 · Opened Sep 28, 2022
Getting error when try to download and zip multiple files with 500mb size in total Open

question/support

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

Stuk/jszip#865 · Opened Sep 28, 2022
generateAsync not work and no error thrown on v3.10.0 and v3.10.1 Open

bug

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

Stuk/jszip#864 · 6 comments · 4 reactions · Opened Sep 24, 2022

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