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. Everything runs locally in your browser — nothing is uploaded.
Perform DNS lookups for A, AAAA, CNAME, MX, TXT, and NS records.
Validate robots.txt syntax — checks User-agent, Allow, Disallow, Sitemap, Crawl-delay directives. Identifies unknown directives, missing colons, and missing User-agent declarations.
Validate email addresses for correct format, disposable domains, and MX record existence.
Analyzes your writing with real-time word count, sentence count, syllable count, paragraphs, and advanced readability metrics — Flesch-Kincaid Reading Ease, Grade Level, estimated speaking time, and keyword density. Essential for writers, students, and SEO professionals optimizing content for readability.
Produces a robots.txt file from a point-and-click form where you set allowed and disallowed paths, crawl delays, and sitemap references.
DNS Record Validator lets you 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. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
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. Everything runs locally in your browser — nothing is uploaded. It's ideal for developers, designers, and anyone who needs to validate dns record syntax for a, aaaa, cname, mx, txt, ns, soa, srv, caa, and ptr records 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, DNS Record 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.