Why | The one-liner | Presets | Use it in every test | Where the diff images go | Reviewing changes | Continuous integration | Variants or the cross_platform preset?
Package: odiffr 0.6.0.9000
Ben Wolstenholme
odiffr: Fast Pixel-by-Pixel Image Comparison Using 'odiff'
R bindings to 'odiff', a fast SIMD pixel-by-pixel image comparison tool <https://github.com/dmtrKovalenko/odiff>. Compares PNG, JPEG, WEBP, TIFF and BMP images, plots and PDF pages with configurable thresholds, antialiasing detection and ignore regions. Provides 'testthat' expectations and snapshot testing (including for 'shinytest2' screenshots), batch and directory comparison, HTML, Markdown and JUnit reports, baseline approval and audit records. Requires the 'odiff' binary, which can be downloaded with install_odiff().
Authors:
odiffr_0.6.0.9000.tar.gz
odiffr_0.6.0.9000.zip(r-4.7-any)odiffr_0.6.0.9000.zip(r-4.6-any)odiffr_0.6.0.9000.zip(r-4.5-any)
odiffr_0.6.0.9000.tgz(r-4.6-any)odiffr_0.6.0.9000.tgz(r-4.5-any)
odiffr_0.6.0.9000.tar.gz(r-4.7-any)odiffr_0.6.0.9000.tar.gz(r-4.6-any)
odiffr_0.6.0.9000.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
odiffr/json (API)
| # Install 'odiffr' in R: |
| install.packages('odiffr', repos = c('https://benwolst.r-universe.dev', 'https://cloud.r-project.org')) |
Bug tracker:https://github.com/benwolst/odiffr/issues
Pkgdown/docs site:https://benwolst.github.io
Last updated from:077176fc9f. Checks:9 OK. Indexed: yes.
| Target | Result | Time | Files | Syslog |
|---|---|---|---|---|
| linux-devel | OK | 157 | ||
| source / vignettes | OK | 228 | ||
| linux-release | OK | 151 | ||
| macos-release | OK | 108 | ||
| macos-oldrel | OK | 132 | ||
| windows-devel | OK | 109 | ||
| windows-release | OK | 100 | ||
| windows-oldrel | OK | 106 | ||
| wasm-release | OK | 88 |
Exports:approve_changesaudit_recordbatch_junitbatch_markdownbatch_reportcompare_dirs_reportcompare_file_odiffcompare_image_dirscompare_imagescompare_images_batchcompare_pdf_dirscompare_pdfsdiff_imageexpect_images_differexpect_images_matchexpect_snapshot_imagefailed_pairsfind_odiffignore_regioninstall_odiffodiff_availableodiff_infoodiff_presetodiff_runodiff_versionodiffr_cache_pathodiffr_clear_cacheodiffr_updatepassed_pairsplot_optionssnapshot_reportuse_odiffr_ci
Dependencies:
Using odiffr with shinytest2
Last update: 2026-10-07
Started: 2026-10-04
Getting Started with Odiffr
Introduction | Installation | System Requirements | Basic Usage | Check Configuration | Compare Images | Generate Diff Images | Advanced Options | Threshold | Antialiasing | Ignore Regions | Batch Processing | Directory Comparison | Accessor Functions | Batch Summary | Column Reference | Parallel Processing | HTML Reports | One-Liner Workflow | Approving Changes | Viewing a Diff | CI Integration | CI Outputs | Working with magick | Low-Level API | Binary Management | Install or Update the Binary | Custom Binary Path | Faster comparisons with npm installs | Cache Management | Visual Regression Testing with testthat | Testing Plots | Snapshot Testing with expect_snapshot_image() | Diff Images on Failure | Comparison with vdiffr | For Validated Environments | Audit records
Last update: 2026-10-04
Started: 2025-11-26
Comparing PDF outputs
Why compare PDFs visually? | Comparing two PDF files | Different numbers of pages | Different page sizes | Comparing whole directories | Reports and CI | Ignoring dynamic content | Choosing the resolution | RTF and DOCX outputs | Limitations
Last update: 2026-10-04
Started: 2026-10-04
Comparing web pages and htmlwidgets
Screenshot a page | Screenshot an htmlwidget | Compare with a baseline | As a testthat snapshot
Last update: 2026-10-04
Started: 2026-10-04
