Validate RSS/Atom feeds for spec compliance — required fields, date formats, enclosures. Fix podcast feeds Apple rejects — local validation, free, no signup.
Content reviewed October 2026 · About Toolzum
Validate package.json for required fields, semver format, and dependency presence. Catch missing fields and bad semver before installs fail — free, local, no signup.
Basic structural check for OpenAPI/Swagger specs — required top-level fields, non-empty paths, and $ref presence. A heuristic screen, not a full spec validation: passing here does not guarantee a valid spec.
Validate Content Security Policy headers against W3C spec and common pitfalls. Code never leaves your device — formatting and validation run locally in your browser.
Validate IBAN structure, length, and mod-97 check digits for 80+ countries. Catch transfer typos before money moves — local ibantools work, free, no signup.
Convert values between string, number, boolean, array, and object types with validation. Fix API type mismatches fast — local conversion, free, no signup.
Missing guid, bad pubDate format, or unreachable enclosure URLs top the list. Validate to get the exact failing element with line numbers.
Both validate here — RSS 2.0 for podcasts and blogs, Atom for strict feeds. The tool detects the flavor automatically.
URLs must resolve to audio with correct MIME and length. A 404 enclosure silently drops episodes from directories.
No — validation runs locally in your browser. Nothing leaves your device.
Sitemap Validator
Validate XML sitemaps — checks urlset/sitemapindex root, loc entries, XML declaration, and URL count. Supports standard sitemap protocol formatting.
XML Minifier / Validator
Minify XML by removing whitespace, or validate XML syntax. Paste your XML and choose an operation. Minify for transit or validate for correctness — free, local, no signup.