Why browser-based tools instead of CLI?

They inherit your real DNS, extensions, corporate proxy, and split-tunnel VPN — matching what non-technical users experience.

Are these results safe to paste into tickets?

Redact tokens and internal IPs first. Public IPs and ASNs are usually fine; combine with timestamps and test URLs.

Do I still need curl and dig?

Yes for low-level reproducibility. Browser tools complement, not replace, terminal workflows.

April 2, 2026 · 9 min read

10 Browser Tools Every Remote Developer Should Bookmark (2026)

A practical toolkit for debugging networking, rendering, and identity from the client side — including the eight free utilities on this site.

Remote debugging is context switching — VPN country, flaky hotel Wi‑Fi, corporate TLS inspection, browser extensions that rewrite headers. Bookmarking a consistent diagnostics belt saves hours on Slack threads that go “works on my machine.” Below are ten categories; eight map directly to WhatIsMyTools so you can share URLs with teammates.

1. Public IP + ASN visibility

Know your egress before blaming a CDN. Compare on/off VPN and on tethering.
Tool: What Is My IP

2. Browser identity strings

Support teams still ask for UA even as Client Hints grow. Capture the exact string your session emits.
Tool: What Is My User Agent

3. Timezone sanity

DST bugs love Friday deploys. Confirm Intl output vs expectations when users “just changed clocks.”
Tool: What Is My Timezone

4. Throughput sampling

Quick download/upload probes help separate Wi‑Fi contention from ISP outages — run wired first.
Tool: Internet Speed Test

5. Screen geometry & DPR

Layout bugs often trace to unexpected DPR or viewport after dynamic keyboard opens.
Tool: What Is My Screen Resolution

6. Browser engine facts

Pair UA with engine knowledge when a CSS bug only reproduces on one family.
Tool: What Is My Browser

7. Coarse geolocation checks

Validate GeoIP assumptions for feature flags — remember city-level inaccuracy.
Tool: What Is My Location

8. DevTools Network + HAR export

Chrome/Firefox HAR files preserve redirects, TTFB, and header anomalies for async review.

9. DNS / HTTPS debugging (terminal + browser)

For a quick A/AAAA check via DNS over HTTPS (with explicit resolver labeling), use What Is My DNS. For traces and authoritative chains, dig +trace, curl -v, and openssl s_client still win for SNI and cert chain puzzles.

10. Structured logging access

Whether CloudWatch, Datadog, or self-hosted Loki, ensure on-call engineers can correlate client-reported timestamps with server trace IDs — teach PMs to paste UTC instants.

Putting it together

When triaging “the portal loads slowly for me,” run speed + IP + browser in one pass, note VPN state, then capture HAR. Paste results into the ticket — future you inherits a reproducible story instead of vibes.

Bookmark the homepage as the hub; each tool is static-first with small client islands for live readings — fast to load during incident bridges.

This post intentionally cross-links our utilities so you can navigate from education to measurement in one click. Add your team’s internal status page as an eleventh bookmark and you are ready for the next fire drill.