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Changelog

All notable changes to Prezo are documented in this file.

Starting with version 2026.1.1, Prezo uses CalVer versioning (YYYY.M.patch).

[2026.4.2] - 2026-04-23

Fixed

  • Inline formatting in boxes - *italic*, `code`, and [links](url) inside ::: box blocks now render properly (previously only **bold** worked)
  • Wrapped bold/italic - Bold and italic spans in list items no longer lose their styling when word-wrapping splits them across lines
  • Extra space before boxes - Removed the duplicated blank line that appeared before every box block (Rich's Markdown renderer already contributes the needed spacing)

Documentation

  • Cheat sheet - Documented link navigation mode (Tab, j/k, Enter, Escape) and the -v version flag

[2026.4.1] - 2026-04-08

Fixed

  • Code blocks - # comments inside fenced code blocks are no longer rendered as H1 headings
  • Bold in titles - **bold**, *italic*, `code` and links in H1/H2 headings now render with proper styling instead of showing raw markers
  • URL splitting in lists - Markdown links and bare URLs in list items are no longer broken across lines during word wrapping

[2026.2.4] - 2026-02-27

Changed

  • Code quality improvements - Refactored complex functions
  • Type annotations - Fixed type hints for compatibility with mypy, pyrefly & ty

Fixed

  • Textual API compatibility - Updated stylesheet.add_source() call to use correct parameter names
  • Async action_quit - Fixed method signature to match Textual's async parent class

[2026.2.3] - 2026-02-06

Added

  • Clickable links - Click on markdown links to open them (URLs open in browser, local files in default app)
  • Link navigation mode - Press Tab to enter link mode, j/k to navigate between links, Enter to open, Escape to exit
  • Hanging indent for lists - Continuation lines of bullet points now align with text after the bullet, not with the bullet itself

Changed

  • Self-closing spacers/dividers - ::: spacer and ::: divider no longer require a closing ::: tag

Fixed

  • Inline images - Images without bg directive now display properly below the title (centered, taking available space)
  • Link path resolution - Relative paths in links resolve relative to the presentation file (consistent with image paths)

[2026.2.2] - 2026-02-05

Added

  • Session resume - New --resume / -r flag to restore session state (slide position, timer elapsed time, timer running state, theme) when relaunching a presentation
  • Image vertical fit - New ![bg right:fit] and ![bg left:fit] syntax to size images to fill vertical space while maintaining aspect ratio
  • Custom themes - Define custom color themes in ~/.config/prezo/config.toml using [themes.name] sections
  • Custom CSS - Load custom Textual CSS from ~/.config/prezo/custom.tcss, config-specified path, or local ./prezo.tcss

Fixed

  • Heading styles - H1 (heavy border panel) and H2 (centered bold) now render consistently across all slides
  • Theme cycling - Backgrounds now update correctly when cycling through themes with T
  • Bullet list spacing - One blank line before and after each bullet list block (was inconsistent)
  • Numbered list spacing - Empty lines between list items in source no longer create extra spacing

Documentation

  • Updated cheat-sheet and tutorial with --resume and right:fit/left:fit syntax

[2026.2.1] - 2026-02-03

Added

  • Version flag - New -v/--version CLI option to display version
  • Timer start/stop - New S key to pause/resume the elapsed timer (shows ⏸ indicator when paused)
  • Pacing indicator - Color-coded indicator showing if you're ahead/behind schedule when a time budget is set (--time-budget flag or time_budget directive)

Fixed

  • Box layout spacing - Stacked boxes now have exactly one blank line between them (was two)
  • Box content spacing - Title followed by list no longer has extra blank line in boxes
  • --no-chrome export - Fixed blank page output when exporting without window decorations
  • Export vertical spacing - Removed wasted blank lines at bottom of PDF/PNG/SVG exports
  • Custom box content renderer for compact spacing (avoids Rich Markdown's paragraph gaps)

[2026.1.3] - 2026-01-22

Added

  • Chrome PDF backend - Best quality PDF export using Chrome/Chromium headless
  • PDF backend selection - New --pdf-backend CLI option (auto, chrome, inkscape, cairosvg)
  • Demo presentation showcasing Prezo features (docs/slides.md)

Changed

  • PDF backend auto-detection now prefers Chrome > Inkscape > CairoSVG
  • Export functions now return Path and raise ExportError instead of returning (int, str) tuples
  • Export module refactored into a package (export/) with separate modules for PDF, HTML, images, and SVG
  • Tutorial expanded into comprehensive user guide with CLI usage, keyboard shortcuts, configuration, and troubleshooting

[2026.1.2] - 2026-01-22

Added

  • Column layouts - Pandoc-style fenced div syntax for multi-column slides
    • ::: columns / ::: column for side-by-side content
    • Support for 2, 3, or more columns
    • Variable column widths (::: column 30 for 30% width)
    • Works in TUI, PDF export, and HTML export
  • Centered content - ::: center for horizontally centered text
  • Right-aligned content - ::: right for right-aligned text (attributions, signatures)
  • Vertical spacing - ::: spacer [n] for adding blank lines (default 1)
  • Bordered panels - ::: box [title] for content in bordered boxes
  • Horizontal dividers - ::: divider [style] with styles: single, double, thick, dashed
  • Nested layout blocks - Layout blocks can be nested inside columns
  • New SlideContent widget with layout support
  • New layout.py module for parsing and rendering layouts
  • Demo presentations: examples/columns_demo.md, examples/layout_demo.md

Changed

  • Test suite reorganized into test pyramid structure (a_unit, b_integration, c_e2e)

Fixed

  • Emoji characters now render correctly in PDF export (added emoji font fallbacks)

[2026.1.1] - 2026-01-06

Changed

  • Switched from SemVer to CalVer versioning

Fixed

  • Pillow deprecation warnings (getdata() replaced with get_flattened_data())

Documentation

  • Updated tutorial with missing features (image_mode directive, bg fit/contain, w:/h: size syntax)
  • Added CHANGES.md changelog

[0.3.2] - 2025-12-16

Fixed

  • Type checker issues (mypy, pyrefly, ty)
  • CI configuration

Changed

  • Tweaked default CSS for better slide layout

Added

  • Noxfile for development automation

[0.3.1] - 2025-12-16

Fixed

  • Modal screens (help, overview, TOC, search) now use the current theme

[0.3.0] - 2025-12-16

Initial public release.

Features

  • Markdown presentations - MARP/Deckset format with --- slide separators
  • Live reload - Auto-refresh when file changes (1s polling)
  • Keyboard navigation - Vim-style keys, arrow keys, and more
  • Slide overview - Grid view for quick navigation (o)
  • Search - Find slides by content (/)
  • Table of contents - Navigate by headings (t)
  • Go to slide - Jump to specific slide number (:)
  • Presenter notes - Toggle notes panel (p)
  • Themes - 6 color schemes (T to cycle): dark, light, dracula, solarized-dark, nord, gruvbox
  • Timer/Clock - Elapsed time and countdown (c)
  • Edit slides - Open in $EDITOR (e), saves back to source file
  • Export - PDF, HTML, PNG, SVG formats with customizable themes and sizes
  • Image support - Inline and background images with MARP layout directives (left/right/fit)
  • Native image viewing - Press i for full-quality image display (iTerm2/Kitty protocols)
  • Blackout/Whiteout - Blank screen modes (b/w)
  • Command palette - Quick access to all commands (Ctrl+P)
  • Config file - Customizable settings via ~/.config/prezo/config.toml
  • Recent files - Tracks recently opened presentations
  • Position memory - Remembers last slide position per file