for use in webconsole on https://profiler.firefox.com/

slice-profile-ranges.js

function zoomOnMarkers(marker1, marker2) {
  const zeroAt = selectors.profile.getZeroAt(getState());
  dispatch(actions.commitRange(marker1.start - zeroAt, marker2.start - zeroAt));
}

function resetRange() {
  dispatch(actions.popCommittedRanges(0));
}

function findRanges(suiteName) {
  const startMarkers = new Map();
  const ranges = [];
  for (const marker of filteredMarkers) {
    if (
      marker.name !== "UserTiming" ||
      !marker.data ||
      !marker.data.name ||
      (suiteName && !marker.data.name.includes(`-${suiteName}`))
    ) {
      continue;
    }

    const markerName = marker.data.name;
    if (markerName.startsWith("start-suite-")) {
      startMarkers.set(markerName.slice("start-suite-".length), marker);
    }
    if (markerName.startsWith("end-suite-")) {
      const baseName = markerName.slice("end-suite-".length);
      const startMarker = startMarkers.get(baseName);
      startMarkers.delete(baseName);
      if (startMarker) {
        ranges.push([baseName, [startMarker, marker]]);
      }
    }
  }

  return ranges;
}

function gatherUrlsForRanges(ranges) {
  return ranges.map(([baseName, [marker1, marker2]]) => {
    zoomOnMarkers(marker1, marker2);
    const location = window.location.href;
    resetRange();
    return [baseName, location];
  });
}

async function prettyPrint(suiteName) {
  let results = await run(suiteName);
  let strs = [];
  for (const [baseName, url] of results) {
    strs.push(`${baseName} ${url}`);
  }
  console.log("\n" + strs.join("\n"));
}

// Run with await run()
async function run(suiteName) {
  const dataSource = selectors.urlState.getDataSource(getState());
  if (dataSource === "from-browser") {
    console.error(
      "This snippet works with an uploaded profile only, but this profile hasn't been yet. Please upload this profile and try again"
    );
  }
  return Promise.all(
    gatherUrlsForRanges(findRanges(suiteName)).map(async ([baseName, url]) => [
      baseName,
      await shortenUrl(url),
    ])
  );
}

await prettyPrint()

It would be cool to change the profile title, too, so that the subtest name is shown in the tab label

for reference, here's how we'd change the name dispatch(actions.changeProfileName("New name"))