Validate robots.txt syntax — checks User-agent, Allow, Disallow, Sitemap, Crawl-delay directives. Identifies unknown directives, missing colons, and missing User-agent declarations. Everything runs locally in your browser — nothing is uploaded.
Validate .htaccess files against 30+ known Apache directives. Checks RewriteEngine, RewriteRule, ErrorDocument, Redirect, Header, Options, and block directives. Flags unknown directives.
Validate GraphQL schema syntax and structure. Detect missing root types, unknown type references, and common schema issues.
Validate DNS record syntax for A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, CAA, and PTR records. Checks IP format for A/AAAA records and domain validity for MX records.
Produces a robots.txt file from a point-and-click form where you set allowed and disallowed paths, crawl delays, and sitemap references.
Crawls any website and generates a standards-compliant XML sitemap. Supports JavaScript sites (React, Next.js, Vue), detects broken links, and provides SEO health insights.
robots.txt Validator lets you validate robots.txt syntax — checks User-agent, Allow, Disallow, Sitemap, Crawl-delay directives. Identifies unknown directives, missing colons, and missing User-agent declarations. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Validate robots.txt syntax — checks User-agent, Allow, Disallow, Sitemap, Crawl-delay directives. Identifies unknown directives, missing colons, and missing User-agent declarations. Everything runs locally in your browser — nothing is uploaded. It's ideal for developers, designers, and anyone who needs to validate robots without installing software or sending data to external servers.
Direct text entry, file upload, or URL-based input — depending on the tool. Paste or type your content directly into the provided editor area.
Yes. After the initial page load, robots.txt Validator runs entirely on your device with no internet connection needed. All processing is done locally.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check individual tool descriptions for specifics.
No. All code processing — formatting, minification, conversion, hashing — runs locally in your browser.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. SQL uses sql-formatter, JSON uses native JSON.parse, and other formatters follow widely adopted formatting rules.
Yes. All developer tools work fully offline after the initial page load.
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results.
Diff Checker
Compares two input texts side-by-side, highlighting inserted, deleted, and changed lines with distinct background colors.
Regex Tester
Provides an interactive environment where users can write a regular expression pattern, test it against sample strings, and view real-time match.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.
JS Minifier
Strips comments, whitespace, and shortens local variable names in JavaScript source without altering execution semantics.
Base64 Encode/Decode
Encodes text or small files into Base64 strings and decodes them back with automatic MIME-type detection for binary safety.