AnyTool
Your files never leave your device. All processing happens locally in your browser.

How to visualize git commit history and branches without uploading your repo?

Run a git log command in your repo and paste the output into AnyTool Git History Visualizer. It parses the commit DAG in a Web Worker and draws an interactive swimlane branch graph plus author, commit-type, busiest-file and activity-heatmap analytics. No GitHub URL is ever sent and the log never leaves your browser.

  • Paste git log output and get a real interactive branch graph instantly
  • Author leaderboard, commit-type breakdown, busiest files and a weekday-by-hour heatmap
  • Filter live by author, branch, type, date range or message, then export PNG, SVG or CSV
  • 100% in your browser - no upload, no signup, works offline

What is

Git History Visualizer

A Git History Visualizer parses git log output into a commit graph (DAG), rendering branches, merges, tags and refs as a swimlane diagram alongside author and timeline analytics, all from pasted text with no remote repository access.

Developer Tools

Related terms

Commit Graphgit logBranch DAGCommit DAG

Frequently Asked Questions

No. You paste git log text and parsing happens entirely in your browser - no repo URL or file is ever sent.

Nothing is uploaded. The tool parses your pasted git log in a Web Worker on your own device, so it works on private and air-gapped repos with no GitHub URL leak and no API rate limits. The pasted log never leaves the browser.

Use a delimited format that carries hashes, parents, author, ISO date, refs and subject; add --numstat for per-file stats.

The tool recommends a copy-ready git log command carrying commit hash, parent hashes, author, ISO date, refs and subject so it can draw the true branch graph. Adding --numstat includes per-file added and deleted lines, which powers the busiest-files panel. It also parses plain, --oneline and --graph formats with less detail.

On Chromium browsers you can load a local .git folder; otherwise just paste git log output.

An optional power mode uses the File System Access API to read loose commit objects from a local .git folder, supported only on Chromium browsers. Fully packed repositories may yield no loose objects, so pasting the recommended git log command is the reliable path on every browser.

Click any node to inspect its hash, parents, author, date, message and changed files; hover to highlight its ancestry.

Click a commit in the graph to open a detail panel showing the full hash, parents, author and email, date, subject, commit type and changed files with added and deleted lines. Hovering a commit highlights its ancestry while dimming unrelated commits, all computed instantly in client state.

Detailed Explanation

Technical Details

Parsing git log into an Interactive Branch Graph

AnyTool Git History Visualizer takes pasted git log output and parses the commit DAG in a Web Worker, then lays out a hand-rolled SVG swimlane graph that assigns each commit to a lane from its parent pointers and routes branch and merge edges. It recognises a delimited format carrying hash, parent hashes, author, ISO date, refs and subject, and also parses plain, --oneline and --graph forms with less detail. Merges, octopus merges, tags, HEAD and branch refs are rendered as graph decorations.

  • Commit topology is recovered from parent hashes, not redrawn from a DSL
  • Parsing runs in a Web Worker so large pasted logs stay responsive
  • Rows are virtualized so tens of thousands of commits scroll smoothly
  • Recommended git log command includes ISO dates, refs and optional --numstat file stats
Use Cases

Author, Type, File and Heatmap Analytics

Beyond the graph, the tool derives a contributor leaderboard with commit counts and added/deleted lines, a conventional-commit type breakdown, a busiest-files panel (when --numstat is present), a commits-over-time chart bucketed by day, week or month, and a weekday-by-hour activity heatmap. Filtering by author, branch, type, date range or message text updates the graph and analytics live, and selecting a commit reveals its parents, files and message.

  • Author leaderboard uses deterministic initials and colors with no avatar network calls
  • Activity heatmap maps commit timestamps to a weekday-by-hour grid
  • Filters recompute the visible graph and stats entirely in client state
  • Busiest-files panel requires --numstat in the pasted log
Privacy & Security

Privacy Model and Client-Side Limits

Because everything runs in the browser, the tool cannot fetch an arbitrary remote repository - doing so would require provider APIs and tokens and would leak the repo URL, so pasted git log output is the primary input and the source of the privacy guarantee. Optional local .git reading via the File System Access API is Chromium-only and reads loose objects; fully packed repositories may surface no loose commits, in which case pasting git log is the reliable path. No data, URL or telemetry is ever transmitted.

  • No remote GitHub or GitLab fetch, so no repo URL leak and no API rate limits
  • Works on private and air-gapped repositories
  • Local .git power mode is Chromium-only and read-only
  • Packed repos may need a pasted git log instead of local-folder reading
AnyTool Git History Visualizer vs typical online alternatives
CapabilityAnyToolTypical alternative
Privacy / no uploadYes - 100% client-sideOften server or GitHub-API fetch
Works on private / offline reposYes - paste git logNo - public repos via URL only
InputReal git log outputHand-authored Mermaid DSL or repo URL
Analytics (authors, types, heatmap)Yes - full dashboardUsually graph only
ExportPNG, SVG and CSVSVG or PNG only
PriceFreeFreemium/paywall

URL-based visualizers leak the repository identity and hit GitHub API rate limits; Mermaid editors require manually writing gitGraph syntax.