Issues

• Remove JSZip.defaults

  breaking
  Stuk/jszip#973 · Filter by author jonkoops opened on Sep 8, 2026 · v5

• Deprecate JSZip.defaults

  deprecation
  Stuk/jszip#972 · Filter by author jonkoops opened on Sep 8, 2026 · v4

• isStream does not recognize standard Node.js Writable Streams (compatibility issue)

  bug
  Stuk/jszip#954 · Filter by author lyyffee opened on Jul 10, 2025 · v3

• Potential for unexpected behavior in utils.inherits regarding pre-existing child prototype properties and constructor

  bug
  Stuk/jszip#951 · Filter by author xzyingxiashubro opened on Jun 9, 2025

• Potential for unexpected output from base64.encode with non-ASCII string inputs

  bug
  Stuk/jszip#950 · Filter by author xzyingxiashubro opened on Jun 6, 2025

• Potential for shared state in this.files after clone() in jszip/lib/index.js

  bug
  Stuk/jszip#949 · Filter by author xzyingxiashubro opened on Jun 5, 2025

• extract blob with mime type

  feature
  Stuk/jszip#948 · Filter by author tattdogg opened on Apr 22, 2025

• Use modern JavaScript syntax

  breakingfeature
  Stuk/jszip#946 · Filter by author jonkoops opened on Mar 28, 2025 · v4
  1

  

• Encryption Support

  feature
  Stuk/jszip#943 · Filter by author kheos31 opened on Mar 26, 2025
  1

• JSZip producing archives with bad crc32 / zipfile offset in some instances

  bug
  Stuk/jszip#936 · Filter by author mikethea1 opened on Dec 17, 2024 · v3

• The date in the exported file is incorrect

  bug
  Stuk/jszip#935 · Filter by author p76 opened on Nov 13, 2024 · v3
  3

• generateAsync does not work with Tampermonkey

  bug
  Stuk/jszip#934 · Filter by author bmacho opened on Oct 29, 2024 · v3
  7

• Compression default should be DEFLATE, not STORE

  feature
  Stuk/jszip#931 · Filter by author FuzzyGamesOn opened on Sep 25, 2024

• file treating folder

  bug
  Stuk/jszip#930 · Filter by author stoneeagle opened on Aug 9, 2024 · v3

• How to pass the loadAsync method into arraybuffer

  question/support
  Stuk/jszip#928 · Filter by author csywweb opened on Jun 17, 2024

• Can't unzip some zip files

  bug
  Stuk/jszip#925 · Filter by author cyber-sec0 opened on May 9, 2024 · v3
  2

• Add asyncIterator support to NodejsStreamOutputAdapter

  feature
  Stuk/jszip#923 · Filter by author mesmere opened on Mar 27, 2024

• ZIP64 Support broken

  bug
  Stuk/jszip#922 · Filter by author tkrah opened on Mar 25, 2024 · v3
  2

• Error: End of data reached

  question/support
  Stuk/jszip#920 · Filter by author EvPut opened on Feb 28, 2024

• escape and unescape are deprecated

  feature
  Stuk/jszip#919 · Filter by author DamonChen117 opened on Feb 4, 2024

• Can't use ReadableStream from generateNodeStream in the PutObjectCommand of s3

  bug
  Stuk/jszip#918 · Filter by author palashCItobuz opened on Feb 1, 2024 · v3

• Zipping 1GB+ and splitting to chunks is slow - is there a way to speed it up?

  performance
  Stuk/jszip#916 · Filter by author alexandis opened on Jan 27, 2024

• Math.random() usage

  breakingfeature
  Stuk/jszip#914 · Filter by author swetha8612 opened on Dec 15, 2023
  1

• Large zip file breaks with loadAsync

  bug
  Stuk/jszip#912 · Filter by author velgajski1 opened on Oct 31, 2023 · v3
  5

• Reading Folder Doesn't Work

  bug
  Stuk/jszip#911 · Filter by author TurtleP opened on Oct 30, 2023 · v3