Web Tools
Tools for URLs, encodings, headers, requests, and browser-facing payload workflows.
Work with URLs, Base64, JavaScript payloads, and browser-safe encodings.
Web Tools Hub
The Web hub is for utilities that support day-to-day browser, request, and payload workflows. It includes tools for encodings, URL handling, JavaScript payloads, and other helpers that sit close to frontend development and API inspection.
This category is especially useful when you are moving data between the browser, requests, logs, and third-party services. The goal is to give you quick, focused utilities without requiring a full API client or browser extension.
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Subtopics in this hub
Each subtopic clusters a narrower intent so users can reach the right utility faster.
Encoding
3 tools in this cluster
Base64 Encoder / Decoder
Encode text or files to Base64, or decode Base64 strings back to plain text.
HTML Entity Encoder / Decoder
Encode special characters to HTML entities or decode entities back to plain text, with a quick-reference table.
URL Encoder
Encode a full URL or a single nested component with the right boundary, then copy a clean result for redirects, query parameters, and callback links.
Web Requests
7 tools in this cluster
Cache-Control Header Checker
Review whether a Cache-Control header strategy is coherent before no-store, no-cache, max-age, immutable, and revalidation hints start fighting each other.
CORS Header Checker
Check whether a browser request will pass CORS based on the request method, custom headers, credentials mode, and the response headers your API returns.
HTTP Status Code Explorer
Search common HTTP status codes, compare confusing client and server failures, and keep a sharper API debugging checklist in the browser.
Set-Cookie Header Inspector
Inspect raw Set-Cookie response headers, surface effective attributes, and flag browser policy issues such as SameSite=None without Secure.
URL Decoder
Decode percent-encoded URL strings back to human-readable plain text.
URL Query Parameter Inspector
Inspect a full URL, decode query values, group duplicate keys, and flag suspicious tracking parameters directly in your browser.
Recently added
HTML Entity Encoder / Decoder
Encode special characters to HTML entities or decode entities back to plain text, with a quick-reference table.
Set-Cookie Header Inspector
Inspect raw Set-Cookie response headers, surface effective attributes, and flag browser policy issues such as SameSite=None without Secure.
User-Agent Parser
Parse one raw user-agent string and identify browser family, version, engine, operating system, device type, and likely bot traffic.
Cache-Control Header Checker
Review whether a Cache-Control header strategy is coherent before no-store, no-cache, max-age, immutable, and revalidation hints start fighting each other.
CORS Header Checker
Check whether a browser request will pass CORS based on the request method, custom headers, credentials mode, and the response headers your API returns.
URL Encoder
Encode a full URL or a single nested component with the right boundary, then copy a clean result for redirects, query parameters, and callback links.
Guides that support this hub
Use supporting articles to go deeper on workflows that span multiple tools in this category.
400 vs 401 vs 403 vs 422: A Practical API Error Triage Workflow
A concrete debugging workflow for separating malformed requests, authentication failures, permission issues, and validation errors before your team fixes the wrong thing.
References tools in this workflow 3
Why Access-Control-Allow-Origin Star Fails with Credentials
A practical browser-first guide to diagnosing the most common credentialed CORS mistake: returning wildcard Allow-Origin while the frontend sends cookies or auth-bound credentials.
References tools in this workflow 3
encodeURI vs encodeURIComponent for redirect_uri and Query Params
A practical guide to choosing the right encoding boundary for redirect_uri, nested URLs, and query parameter values before a small encoding mistake turns into a redirect bug.
References tools in this workflow 3
How to Read User-Agent Strings Without Overthinking Every Token
A practical guide to extracting the few user-agent signals that actually change debugging decisions, including browser family, OS, device type, and likely bot markers.
References tools in this workflow 2
Key workflows in this category
400 vs 401 vs 403 vs 422: A Practical API Error Triage Workflow
A concrete debugging workflow for separating malformed requests, authentication failures, permission issues, and validation errors before your team fixes the wrong thing.
Nested Redirect URL Debugging Checklist: Duplicate Params, Empty Trackers, and Decode Boundaries
A practical workflow for debugging redirect URLs that hide duplicate query keys, empty tracking params, and half-decoded nested values.
Why Your redirect_uri Breaks: Nested Params, + Signs, and Double Encoding
A practical guide for redirect_uri bugs caused by nested query strings, plus-sign handling, and accidental double encoding across browser and server layers.
How to Debug Redirect URLs, Query Params, and Encoded Targets
A web debugging guide for decoding redirect targets, checking nested query parameters, and spotting double-encoded URLs.
Frequently asked questions
What belongs in the Web hub?
Use the Web hub for URL, Base64, request, header, JavaScript, and browser-adjacent utilities that support frontend and API workflows.
How is Web different from Data?
The Data hub focuses on structured formats and transformations, while the Web hub focuses more on request workflows, encodings, browser payloads, and web-specific tooling.
Why does this category matter for SEO?
A hub page helps group related web utility intent under one topical cluster, which is stronger than treating every small browser tool as an isolated page.