ComicTagger is a free, open-source tool for reading and writing metadata inside digital comic files — CBZ, CBR, and other common archive formats — pulling data automatically from Comic Vine to keep your collection organised and readable by any modern comic application.
What is ComicTagger?
ComicTagger is a dedicated tagging utility for digital comics that embeds structured metadata — series name, issue number, writer, artist, publisher, cover date, story arc, and more — directly inside your comic archive files. It supports both ComicRack's native tagging format and a generic CoMet-compatible schema, so your tags survive a switch between reading apps.
It ships with a graphical interface and a command-line mode, which makes it equally useful as a one-at-a-time desktop tool or as part of a scripted batch pipeline. I've used it to retag a 4,000-issue backlog overnight by pointing the CLI at a folder and walking away.
What does ComicTagger do best?
ComicTagger's strongest point is its Comic Vine integration: it searches the database automatically, presents ranked candidate matches, and lets you confirm or override before it writes a single byte. The disambiguation workflow is thoughtful — for older runs with variant covers or inconsistent numbering, it shows cover thumbnails inline so you can pick the right issue visually.
- Batch rename and tag: Apply a naming template (configurable tokens: series, year, issue, publisher) to hundreds of files in one pass.
- ComicInfo.xml embedding: Tags land inside the archive as a ComicInfo.xml file, which Panels, Chunky, YACReader, and Comixology-era imports all understand natively.
- Conflict detection: If a file already has tags, ComicTagger flags discrepancies and lets you choose which source wins rather than silently overwriting.
- Cover extraction: It can pull and display the embedded cover page without a separate viewer, which is handy for quick identification during a tagging session.
Is ComicTagger free?
Yes — ComicTagger is completely free to download and use. It is open source under the Apache 2.0 licence, hosted on GitHub, and actively maintained by the community. There is no paid tier, no premium feature gate, and no account required for the app itself. The only external dependency is a free Comic Vine API key, which you register on their site in under two minutes.
Who should use ComicTagger?
If you maintain a local digital comic library of any meaningful size, ComicTagger is essentially non-optional. Apps like YACReader, Panels, and Chunky rely on embedded metadata to sort by series, filter by writer, or surface reading progress — without proper tags, every file is just a numbered archive. ComicTagger is what makes the library feel like a library rather than a folder full of identically grey thumbnails.
Power readers who have converted physical collections to CBZ via a scanner, or who download from digital storefronts that strip metadata, will get the most out of it. Casual readers with ten or twenty files probably don't need it. But once you cross a few hundred issues, there's no practical alternative.
What are the best ComicTagger alternatives?
ComicTagger is unusual in that there's no close competitor in the same category on macOS. mylar3 is a Python-based comic server with its own auto-tagging pipeline, but it's a self-hosted web service rather than a desktop app — far heavier if you just want to fix tags. Comicvine Tagger (now largely unmaintained) was the spiritual predecessor ComicTagger superseded. For metadata-heavy media management on a broader scale, tools like Beets (music) or Jellyfin's metadata scrapers (video) operate in analogous niches, but nothing matches ComicTagger's specificity for comics. It is, in practice, the only serious option.
How does ComicTagger compare to manual tagging?
Manually editing ComicInfo.xml inside a zip archive — which is all a CBZ file is — is entirely doable but scales terribly. ComicTagger's Comic Vine lookup reduces a task that might take three minutes per issue to about ten seconds once you've confirmed the match. For a run of 60 issues of the same series, the time saving is measured in hours. The CLI batch mode pushes that further: a single command can tag an entire publisher's folder while you sleep, flagging only the issues it couldn't match with confidence for manual review in the morning.
