Version 3.4.0

🚀 charset-normalizer is raising awareness around HTTP/2, and HTTP/3!

Did you know that Internet Explorer 11 shipped with an optional HTTP/2 support back in 2013? also libcurl did ship it in 2014[...]
All of this while our community is still struggling to make a firm advancement in HTTP clients. Now, many of you use Requests
as the defacto http client, now, and for many years now, Requests has been frozen. Being left in a vegetative state and not evolving,
this blocked millions of developers from using more advanced features.

We promptly invite Python developers to look at the drop-in replacement for Requests, namely Niquests.
It leverage charset-normalizer in a better way! Check it out, you will be positively surprised! Don't wait another decade.

We are thankful to @microsoft and involved parties for funding our work through the Microsoft FOSS Fund program.

3.4.0 (2024-10-08)

Added

• Argument --no-preemptive in the CLI to prevent the detector to search for hints.
• Support for Python 3.13 (#512)

Fixed

• Relax the TypeError exception thrown when trying to compare a CharsetMatch with anything else than a CharsetMatch.
• Improved the general reliability of the detector based on user feedbacks. (#520) (#509) (#498) (#407) (#537)
• Declared charset in content (preemptive detection) not changed when converting to utf-8 bytes. (#381)

Version 3.3.2

3.3.2 (2023-10-31)

Fixed

• Unintentional memory usage regression when using large payloads that match several encodings (#376)
• Regression on some detection cases showcased in the documentation (#371)

Added

• Noise (md) probe that identifies malformed Arabic representation due to the presence of letters in isolated form (credit to my wife, thanks!)

Version 3.3.1

3.3.1 (2023-10-22)

Changed

• Optional mypyc compilation upgraded to version 1.6.1 for Python >= 3.8
• Improved the general detection reliability based on reports from the community

Release 3.3.0

3.3.0 (2023-09-30)

Added

• Allow to execute the CLI (e.g. normalizer) through python -m charset_normalizer.cli or python -m charset_normalizer
• Support for 9 forgotten encodings that are supported by Python but unlisted in encoding.aliases as they have no alias (#323)

Removed

• (internal) Redundant utils.is_ascii function and unused function is_private_use_only
• (internal) charset_normalizer.assets is moved inside charset_normalizer.constant

Changed

• (internal) Unicode code blocks in constants are updated using the latest v15.0.0 definition to improve detection
• Optional mypyc compilation upgraded to version 1.5.1 for Python >= 3.8

Fixed

• Unable to properly sort CharsetMatch when both chaos/noise and coherence were close due to an unreachable condition in __lt__ (#350)

Version 3.2.0

3.2.0 (2023-06-07)

Changed

• Typehint for function from_path no longer enforce PathLike as its first argument
• Minor improvement over the global detection reliability

Added

• Introduce function is_binary that relies on main capabilities, and is optimized to detect binaries
• Propagate enable_fallback argument throughout from_bytes, from_path, and from_fp that allow a deeper control over the detection (default True)
• Explicit support for Python 3.12

Fixed

• Edge case detection failure where a file would contain 'very-long' camel-cased word (Issue #289)

Version 3.1.0

3.1.0 (2023-03-06)

Added

• Argument should_rename_legacy for legacy function detect and disregard any new arguments without errors (PR #262)

Removed

• Support for Python 3.6 (PR #260)

Changed

• Optional speedup provided by mypy/c 1.0.1

Version 3.0.1

3.0.1 (2022-11-18)

Fixed

• Multi-bytes cutter/chunk generator did not always cut correctly (PR #233)

Changed

• Speedup provided using mypy/c 0.990 on Python >= 3.7

Version 3.0.0

3.0.0 (2022-10-20)

Added

• Extend the capability of explain=True when cp_isolation contains at most two entries (min one), will log in details of the Mess-detector results
• Support for alternative language frequency set in charset_normalizer.assets.FREQUENCIES
• Add parameter language_threshold in from_bytes, from_path and from_fp to adjust the minimum expected coherence ratio
• normalizer --version now specify if the current version provides extra speedup (meaning mypyc compilation whl)

Changed

• Build with static metadata (not pyproject.toml yet)
• Make language detection stricter
• Optional: Module md.py can be compiled using Mypyc to provide an extra speedup up to 4x faster than v2.1

Fixed

• CLI with opt --normalize fail when using full path for files
• TooManyAccentuatedPlugin induce false positive on the mess detection when too few alpha characters have been fed to it
• Sphinx warnings when generating the documentation

Removed

• Coherence detector no longer returns 'Simple English' instead returns 'English'
• Coherence detector no longer returns 'Classical Chinese' instead returns 'Chinese'
• Breaking: Method first() and best() from CharsetMatch
• UTF-7 will no longer appear as "detected" without a recognized SIG/mark (is unreliable/conflicts with ASCII)
• Breaking: Class aliases CharsetDetector, CharsetDoctor, CharsetNormalizerMatch and CharsetNormalizerMatches
• Breaking: Top-level function normalize
• Breaking: Properties chaos_secondary_pass, coherence_non_latin and w_counter from CharsetMatch
• Support for the backport unicodedata2

This is the last version (3.0.x) to support Python 3.6 We plan to drop it for 3.1.x

Version 3.0.0rc1

This is the last pre-release. If everything goes well, I will publish the stable tag.

3.0.0rc1 (2022-10-18)

Added

• Extend the capability of explain=True when cp_isolation contains at most two entries (min one), will log in details of the Mess-detector results
• Support for alternative language frequency set in charset_normalizer.assets.FREQUENCIES
• Add parameter language_threshold in from_bytes, from_path and from_fp to adjust the minimum expected coherence ratio

Changed

• Build with static metadata using 'build' frontend
• Make language detection stricter

Fixed

• CLI with opt --normalize fail when using full path for files
• TooManyAccentuatedPlugin induce false positive on the mess detection when too few alpha characters have been fed to it

Removed

• Coherence detector no longer returns 'Simple English' instead returns 'English'
• Coherence detector no longer returns 'Classical Chinese' instead returns 'Chinese'

Version 3.0.0b2

3.0.0b2 (2022-08-21)

Added

• normalizer --version now specify if current version provide extra speedup (meaning mypyc compilation whl)

Removed

• Breaking: Method first() and best() from CharsetMatch
• UTF-7 will no longer appear as "detected" without a recognized SIG/mark (is unreliable/conflict with ASCII)

Fixed

• Sphinx warnings when generating the documentation