All tools · page 249
6,901 free tools across 25 categories. Tools marked with a lightning bolt are ready to use right now.
Paste endpoint signatures and get a client-SDK ergonomics review with naming and paging suggestions.
Propose custom headers and get X- removal, vendor prefix, and registration guidance per name.
Describe cache revalidation needs and get If-None-Match and If-Modified-Since workflow with 304 notes.
Enter your call graph hops and get a timeout and deadline budget per hop with headroom checks.
Enter traffic and failure rates to get breaker thresholds with open, half-open, and close rules.
Describe your dependencies and get a health endpoint response contract with liveness and readiness split.
List your services and get a correlation ID propagation table with header names and logging fields.
Describe responsive needs and get Accept-CH hints to request with privacy notes per hint.
Describe your signed requests and get a canonical string recipe with sorted headers and hashing steps.
List resources and actions to get a scope naming matrix with read and write splits per role.
Describe your key type and get a rotation runbook with overlap windows and verification steps.
Enter a scheme name and get its header syntax, common mistakes, and examples for Bearer, Basic, and others.
Paste a JWS compact serialization and get header, payload, and signature segment breakdown.
Describe sort needs and data size to get cursor versus offset pagination guidance with cursor format.
Describe your resource fields and get a sparse fieldset query syntax with payload saving examples.
Enter page type and connection target to get per-format KB budgets with over-budget traps.
Describe an image use case and get AVIF, WebP, or JPEG guidance with fallback chains.
Enter your layout widths and get a sizes attribute value with srcset candidate suggestions.
Enter device class and audience to get LCP, INP, and CLS budgets with measurement notes.
Describe your hero element and get an LCP optimization checklist covering preload, images, and server time.
Describe layout patterns and get shift prevention steps for images, fonts, and injected content.
Describe your hosting stack and get a TTFB checklist covering caching, redirects, and edge logic.
List your page assets and get fetchpriority values with before and after ordering comparisons.
Describe your page template and get a critical inline CSS budget with async load pattern.