Documentation · HAR Export

Portable Network Captures

TraceBug can export a session's captured network activity as a standard HAR 1.2 (HTTP Archive) file — the interchange format every browser DevTools, Charles, Fiddler, and Postman reads. A capture drops straight into any existing network-debugging workflow.

🌐 Your network capture is a standard file you own

No competitor in the category ships a HAR export — Jam even markets "everything a HAR offers" without one. Because TraceBug already captures the request/response data and runs zero-backend, exporting it as a portable, tool-agnostic file is a natural fit and a clean data-ownership story: not a row in someone's cloud.

On this page

1How to export

In the Quick Bug modal, click 🌐 Export HAR. A .har file downloads with every captured request in chronological order. Open it in:

Chrome / Edge / Firefox DevTools

Network tab → right-click → Import HAR

Charles / Fiddler / Proxyman

File → Import

Postman

Import → the requests become a collection

2What's in it

For each request TraceBug captured:

request.method, request.url

The captured method and (sanitized) URL

request.queryString

Parsed from the URL into name/value pairs

response.status, response.statusText

The captured status + its standard reason phrase

response.content.text

The failed-response body snippet (failures only)

response.content.mimeType

Guessed from the body shape (JSON / HTML / XML / text)

time, timings.wait

The captured request duration

pages[0], browser

The page URL and browser/version from the environment

Fields TraceBug doesn't capture — request/response headers and cookies — are emitted as empty arrays, and timing phases we didn't measure as -1, both valid per the HAR 1.2 schema. URLs are already sanitized at capture (sensitive query params replaced with [REDACTED]).

Programmatic use (SDK)

import { buildHar, exportSessionAsHar, generateReport } from "tracebug-sdk";

const report = generateReport();

// Pure — returns the HAR 1.2 object, no side effects:
const har = buildHar(report, "1.6.0");
console.log(har.log.entries.length);

// Or build + trigger a browser download:
const { filename, entryCount } = exportSessionAsHar(report);

One click, one portable file

Export HAR from any capture and drop it into the network tool you already use — no lock-in, no cloud.