HTTP:COLON

Details

External ID

46670290

Source

HN

Company

—

Product

HTTP:COLON

Website domain

httpcolon.dev

Launched

Jan. 18, 2026

Cohort

—

Upvotes

37

Upvotes percentile

0.7490118577075099

Tags

—

Fetched at

Sept. 7, 2026, 9:25 p.m.

Updated at

Sept. 7, 2026, 9:25 p.m.

Description

Hi HN -- I built HTTP:COLON, a small, open-source web tool for quickly checking a site’s HTTP response headers and learning what they mean as you go.Link: https://httpcolon.dev/What it does- Enter a URL and fetch its response headers- Groups common headers into handy buckets (cache, content, security)- Includes short docs/tooltips for headers and directives so you can look things up while debugging. I find hovering on highlighted headers quite useful!Supports different HTTP methods (GET/POST/PUT/DELETE)Deep links- You can link directly to a host, e.g. https://httpcolon.dev/www.google.com(or any domain) to jump straight into inspecting it.Why I made it- I kept bouncing between DevTools, MDN, and random blog posts while debugging caching + security headers. I wanted one place that’s quick for “what am I getting back?” and “what does this header/directive do?”It’s in beta, and I’d love feedback on:- Missing features you’d want for day-to-day debugging (export/share formats, comparisons, presets, etc.)Thanks!

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