Data format

HAR Sample Files

HAR (.har) files capture browser network activity as structured request and response records. Use sample HAR files to test waterfall analysis, request replay tooling, timing inspection, and browser-network debugging workflows.

3 files All to 50KB SHA256 verified Manifest included
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Quick facts
CategoryData
Total Files3
Extension.har
MIMEapplication/octet-stream
ManifestJSON
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Files first

HAR Sample Files — Download

Starter file

har_browser_asset_waterfall_sample.har · 2.9 KB

Download

Checkout API HAR

Captured HAR session for API replay and timing analysis.

har_checkout_api_trace_sample.har · 1.8 KB
Download Fixture

Webhook Retry HAR

HAR fixture for webhook retry debugging and error-path inspection.

har_webhook_retry_session_sample.har · 1.8 KB
Download Fixture
All (3) 50KB (3)
50KB HAR
Filename Size MIME Download
har_browser_asset_waterfall_sample.har
.har Realistic Starter SHA256 41c5f1050f13...
2.9 KB application/octet-stream Download
har_checkout_api_trace_sample.har
.har Realistic SHA256 0f5b094fc967...
1.8 KB application/octet-stream Download
har_webhook_retry_session_sample.har
.har Realistic SHA256 f09ee4781a1b...
1.8 KB application/octet-stream Download
Use cases

HAR Testing Workflows

Network Trace Preview and Waterfall Review

HAR for Network Trace Preview and Waterfall Review

Open Format HAR

API Trace and Retry Session Review

HAR for API Trace and Retry Session Review

Open Format HAR
Compare and decide

HAR Format Comparisons

More data formats: SQL YAML ENV GRAPHQL INI JSONL
FAQ and reference

HAR File FAQ

Checksum Verification

Use checksums to confirm file integrity after download.

shasum -a 256 your_file_name_here
# Compare output with SHA256 values listed above.
Where is the machine-readable manifest?

Use the manifest when you need stable names, SHA256 values, and URLs for automation.

Manifest
Validation Methodology
  • Validate extension and MIME detection before processing.
  • Benchmark performance with small and larger files.
  • Test malformed-input handling and error messaging.
Fixture Matrix

Use the curated HAR matrix to choose the right clean, edge-case, and broken fixtures for this format.

Open Matrix
Workflow Packs
API Replay Fixture Pack Browser Network Capture Pack
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