v59.0b1

This version is experimental, don't use it in production. If you find bugs, please report them!

Read about this release on our blog.

Command-line API

• The --optimize-size option and its short equivalent -O have been deprecated. To activate or deactivate different size optimizations, you can now use:

  • --uncompressed-pdf,
  • --optimize-images,
  • --full-fonts,
  • --hinting,
  • --dpi <resolution>, and
  • --jpeg-quality <quality>.

• A new --cache-folder <folder> option has been added to store temporary data in the given folder on the disk instead of keeping them in memory.

Python API

• Global rendering options are now given in **options instead of dedicated parameters, with slightly different names. It means that the signature of the HTML.render(), HTML.write_pdf() and Document.write_pdf() has changed. Here are the steps to port your Python code to v59.0:

  1. Use named parameters for these functions, not positioned parameters.

  2. Rename some the parameters:

     • image_cache becomes cache (see below),
     • identifier becomes pdf_identifier,
     • variant becomes pdf_variant,
     • version becomes pdf_version,
     • forms becomes pdf_forms,

• The optimize_size parameter of HTML.render(), HTML.write_pdf() and Document() has been removed and will be ignored. You can now use the uncompressed_pdf, full_fonts, hinting, dpi and jpeg_quality parameters that are included in **options.

• The cache parameter can be included in **options to replace image_cache. If it is a dictionary, this dictionary will be used to store temporary data in memory, and can be even shared between multiple documents. If it’s a folder Path or string, WeasyPrint stores temporary data in the given temporary folder on disk instead of keeping them in memory.

New features

• #1853, #1854: Reduce PDF size, with financial support from Code & Co.
• #1824, #1829: Reduce memory use for images
• #1858: Add an option to keep hinting information in embedded fonts

Bug fixes

• #1855: Fix position of emojis in justified text
• #1852: Don’t crash when line can be split before trailing spaces
• #1843: Fix syntax of dates in metadata
• #1827, #1832: Fix word-spacing problems with nested tags

Documentation

• #1841: Add a paragraph about unsupported calc() function

Contributors

• Guillaume Ayoub
• Lucie Anglade
• Alex Ch
• whi_ne
• Jonas Castro

Backers and sponsors

• Castedo Ellerman
• Kobalt
• Spacinov
• Grip Angebotssoftware
• Crisp BV
• Manuel Barkhau
• SimonSoft
• Menutech
• KontextWork
• NCC Group
• René Fritz
• Moritz Mahringer
• Yanal-Yvez Fargialla
• Piotr Horzycki
• Healthchecks.io
• TrainingSparkle
• Hammerbacher
• Synapsium