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Odiffr 0.5.1

Bug Fixes

• odiff_version() now correctly parses the version from odiff --version output instead of --help, which did not contain version information.
• batch_report() with relative_paths = TRUE now produces correct relative paths on Windows by normalizing path separators before computing relative paths.

Odiffr 0.5.0

New Features

• batch_report() gains a relative_paths parameter. When TRUE, image paths in HTML reports are relative to the report location, making reports portable without embedding images.
• compare_image_dirs() now emits a message when files in current_dir have no corresponding baseline, helping catch missing or extra images early.
• New accessor functions failed_pairs() and passed_pairs() make it easy to filter batch comparison results.

Documentation

• Expanded README and vignette coverage for batch workflows, HTML reports, and CI/testthat integration, including examples using embed = TRUE, show_all = TRUE, and relative_paths = TRUE.

Odiffr 0.4.1

New Features

• compare_dirs_report() convenience function combines compare_image_dirs() and batch_report() into a single call for the common QA workflow of comparing two directories and generating an HTML report.

Documentation

• Added CI integration examples showing how to run visual regression tests in GitHub Actions and upload diff artifacts on failure.

Odiffr 0.4.0

HTML Diff Reports

• batch_report(): Generate standalone HTML reports from batch comparison results. Reports include pass/fail statistics, failure reason breakdown, diff statistics, and thumbnails of worst offenders.
• Configurable image embedding: Use embed = TRUE for self-contained reports with base64-encoded images, or embed = FALSE (default) to link to files.
• Customizable: Set report title, number of worst offenders to display, and optionally include all comparisons (not just failures) with show_all = TRUE.

Odiffr 0.3.0

Directory Comparison

• compare_image_dirs(): Compare all images in two directories by matching relative paths. Baseline directory is source of truth; missing files in current directory trigger warnings and are excluded from results.

Batch Results Summary

• summary() method for batch results: Get aggregate statistics including pass/fail counts, failure reason breakdown, diff statistics (min, median, mean, max), and worst offenders ranked by diff percentage.
• compare_images_batch() and compare_image_dirs() now return objects with class odiffr_batch for S3 method dispatch.

Parallel Batch Processing

• New parallel parameter for compare_images_batch() and compare_image_dirs(): Set parallel = TRUE to compare images using multiple CPU cores.
• Uses parallel::mclapply on Unix systems (macOS, Linux) for faster batch comparisons.
• Automatically falls back to sequential processing on Windows.

Odiffr 0.2.0

testthat Integration

• expect_images_match(): Assert two images are visually identical
• expect_images_differ(): Assert two images are visually different
• Automatic diff image saving to tests/testthat/_odiffr/ on failure
• Configurable via options(odiffr.save_diff) and options(odiffr.diff_dir)

Odiffr 0.1.0

Initial release.

Features

• compare_images(): High-level image comparison returning tibble/data.frame
• compare_images_batch(): Batch comparison of multiple image pairs
• odiff_run(): Low-level CLI wrapper with full option control
• ignore_region(): Helper for creating ignore region specifications

Binary Management

• find_odiff(): Locate Odiff binary with priority-based search
• odiff_available(): Check if Odiff is available
• odiff_version(): Get Odiff version string
• odiff_info(): Display full configuration information
• odiffr_update(): Download Odiff binary to user cache (fallback option)
• odiffr_cache_path(): Get cache directory path
• odiffr_clear_cache(): Remove cached binaries

System Requirements

Requires Odiff (>= 3.0.0) to be installed. Install via:

• npm (cross-platform): npm install -g odiff-bin
• Manual: Download from https://github.com/dmtrKovalenko/odiff/releases

Alternatively, use odiffr_update() to download to user cache.

Platform Support

Works on any platform where Odiff is available:

• macOS (ARM64 and x64)
• Linux (ARM64 and x64)
• Windows (ARM64 and x64)

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.