Best Free Online Developer Tools to Use in 2026
A practical, opinionated list of the best free online developer tools worth using in 2026, organized by category so you can find what you need fast.
Aug 08, 2026
URL Status Checker
Check HTTP status code, full redirect chain, response time, and server headers for any URL. Supports bulk URL checking.
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Final Status
Total Time
Redirects
Content Size
Response Headers
| Header | Value |
|---|
Bulk Results
| URL | Status | Time | Redirects |
|---|
What Is URL Status Checking?
URL status checking tests whether a URL is accessible and reports its HTTP status code, response time, and redirect chain. HTTP status codes indicate the result of the request — 200 OK means success, 301/302 means redirected, 404 means not found, 500 means server error. Monitoring URL statuses is essential for maintaining website health, detecting broken links, and ensuring API endpoints are operational.
This tool fetches URLs directly from the server, following redirects step by step (up to 10 hops) and measuring the response time for each step. It shows the full redirect chain, final HTTP status, response headers, content size, and server information. The bulk mode lets you check multiple URLs at once, making it useful for link audits, CDN configuration testing, and monitoring deployments.
How to Use This URL Status Checker
- Enter URL — Type or paste the URL into the URL field.
- Click Check — Press Check to fetch the URL with redirect following (up to 10 hops) and per-step timing.
- Review results — The report shows final status, total time, redirects, headers, and more.
- Bulk check — Paste multiple URLs (one per line) in the bulk area and click Check All.
- Try examples — Use Valid Example for a working URL or Invalid Example for a 404 URL.
Frequently Asked Questions
What does each HTTP status code mean?
1xx: Informational, 2xx: Success (200 OK), 3xx: Redirect (301, 302), 4xx: Client Error (404 Not Found), 5xx: Server Error (500 Internal Server Error).
Why would a URL show a different status than expected?
This tool sends a generic GET request without browser headers or cookies. Geo-routing, A/B testing, or cookie-based redirects may cause different results than a real browser.
How many redirects does this tool follow?
Up to 10 consecutive redirects. Infinite loops are detected and reported as errors.
Can I check internal/localhost URLs?
No. Localhost, 127.0.0.1, ::1, and 0.0.0.0 are blocked for security (SSRF prevention). Only public URLs can be checked.
Is my data sent to a server?
Yes — the URL is fetched from the server, but results are not logged or stored. Each check is real-time and discarded after results are returned.
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