Swiss Knife SEO
Log in Free audit Start free

Home / Features / SEO Toolkit

36 instant tools. Zero tab-hopping.

The checks you run ten times a day, in one place, with results you can save next to your site. Most tools are free on every plan, the AI-backed ones use plan credits, and the toolkit keeps growing.

Open the Toolkit Try the free instant audit
How the Toolkit works

One URL in, one verdict out, nothing lost

Standalone tool sites answer a question and then forget you existed. The Toolkit lives inside your workspace, so every check starts faster and ends somewhere useful.

1

Pick the outcome

Search the 36 tools by task, or filter by category: checks, analyzers, generators, AI and SERP, writing, and monitors. Recently used tools stay one click away.

2

Run it in seconds

Paste a URL, a text block, or a log excerpt. Live checks fetch the real page, honor the site's robots.txt, and can identify as Googlebot, GPTBot, or a phone when the question demands it.

3

Keep the evidence

Results save privately to your workspace and can be reopened later. When a check uncovers a real problem, the full site audit is one click away with the context carried along.

36 tools shown

Checks 16 tools

Point a tool at a URL and get a verdict in seconds. These are the questions that interrupt real work a dozen times a day: is this redirect chain sane, is the canonical right, does robots.txt block this bot, is the certificate about to expire. Each check fetches the live page, applies the same standards the full audit uses, and states its verdict in plain language.

Instant page auditOn-page snapshot: title, meta, headings, indexability, links, images, headers.
Broken link checkerCheck up to 100 links on a page and flag 4xx, 5xx, or unreachable ones.
Redirect checkerTrace the full redirect chain and final status, as any crawler or device.
robots.txt testerIs a URL allowed or blocked for any crawler, including every major AI bot?
HTTP header checkerInspect response and security headers: HSTS, nosniff, CSP, X-Frame.
Sitemap finder & validatorFind sitemaps via robots.txt and common paths, count the URLs in each.
Structured data checkerFetch a live URL and check its JSON-LD: which types are present, any errors.
Hreflang checkerFlag bad language codes, missing x-default, and non-absolute URLs.
Social tags checkerCheck Open Graph and Twitter Card tags with missing-field warnings.
Accessibility quick checkStatic WCAG checks: alt text, form labels, headings, language, focus order.
SSL certificate checkerIssuer, validity dates, days remaining, and TLS version for any domain.
Indexability checkerCan Google index this URL? Status, meta robots, X-Robots-Tag, canonical.
Canonical tag checkerResolve relative targets, detect conflicts, and confirm the target returns 200.
Content freshness checkerFind published and modified dates, then flag pages due for a factual review.
llms.txt checkerDoes a site publish a valid llms.txt so AI assistants can find its best pages?
Ad copy checkerCheck ad lines against each platform's exact character limits and policy rules.

Analyzers 12 tools

Take a page or a dataset apart and see what it is made of. Readability and density for content work, resource and heading breakdowns for template work, log analysis for crawl-budget work, and pixel-accurate previews that show exactly how Google and the social networks will render you.

Word count & readabilityWord count, reading time, and Flesch readability for a URL or pasted text.
SERP snippet previewSee your title and description as Google renders them, with pixel widths.
Meta / OpenGraph previewPreview the Facebook, X, and LinkedIn social cards for any URL.
Log file analyzerPaste access-log lines: bot versus human, AI versus search, top paths.
JS & CSS resourcesList external and inline JS and CSS, flag render-blocking resources.
Outbound link extractorEvery link on a page: internal versus external, anchors, follow state.
agents.json validatorValidate an agents.json manifest: required fields, JSON validity, structure.
Heading structure checkerThe H1 to H6 outline, with missing or multiple H1s and skipped levels.
Image alt-text checkerEvery image on a page, with the ones missing alt text flagged.
Keyword densityMost-used words and phrases, plus an optional target-phrase measure.
Domain availabilityIs a name free across .com, .net, .io, .co, .ai, and more, with registrar data?
URL structure analyzerScore length, depth, parameters, casing, and slug readability.

Generators 3 tools

Produce correct markup and submissions instead of hand-writing them. Schema Studio alone covers 20 JSON-LD types with merchant shipping and returns fields plus Google eligibility guidance, so the days of copying half-right snippets from forum answers are over.

Schema StudioBuild, import, and quality-check JSON-LD for 20 schema types, with Google eligibility guidance.
Hreflang generatorGenerate hreflang link tags for multi-language and multi-region pages.
IndexNow submitNotify Bing, Yandex, and partner engines the moment pages change.

AI & SERP 2 tools · credits

Live answers from the engines themselves, not estimates. Ask where a domain ranks on Google right now, by country and device, or whether AI assistants cite it for a real buyer question. Pro and above, metered per run, with spend always visible in the workspace.

AI Visibility checkerAsk AI answer engines a buyer question and see whether a domain is cited.
Keyword rank checkerWhere a domain ranks on Google for a keyword, right now, by country and device.

Write 2 tools · credits

Publish-ready text with rules a serious editor would enforce: protected terms that never get rewritten, banned filler vocabulary, adjustable rewrite strength, and up to three variants per run so you choose instead of settle. Pro and above, metered per run.

Content writer11 formats, from SEO articles and category pages to press releases and FAQ sections.
Paraphraser12 voices, rewrite strength, protected terms, and up to 3 variants per run.

Monitors 1 tool

Set it once and get told when something changes. Monitoring belongs to the platform, so results land in your workspace with alerts and history, not in a browser tab you forgot to bookmark.

Backlink monitorTrack whether your backlinks stay live: anchors, follow state, lost-link alerts, disavow file. Full feature →
The Toolkit expands continuously. New tools ship as soon as they meet the platform's evidence, usability, and result-quality standards.
Toolkit questions

The details, answered straight

Usage patterns and worked examples live in the tools and studios guide.

Are the tools really free?
The ones marked Free are, on every plan, the free workspace included. Sign in and run them as often as your work demands. Only the AI and live SERP tools consume credits, and they say so before you run them.
What does "uses credits" mean?
Tools that call paid providers, such as the AI Visibility checker, the rank checker, the writer, and the paraphraser, are metered. Usage is visible in your workspace and bounded by monthly ceilings per plan, so a busy afternoon never turns into a surprise.
Do my results disappear when I close the tab?
No. Results save privately to your workspace, your recently used tools stay pinned at the top of the Toolkit, and you can reopen, review, or remove a saved result later.
Can I run checks as Googlebot or GPTBot?
Yes. The page audit, redirect checker, and header checker have a "check as" selector with search bots, AI bots, and a phone profile, and the robots.txt tester covers more than twenty crawler user agents. Cloaking and bot-specific behavior have nowhere to hide.
Do I need to add a site before using the tools?
No. Every tool runs on any public URL or pasted input. Adding a site simply lets tool results connect to that site's audits, so the evidence accumulates in one place.
Is there a usage limit on the free tools?
Fair-use rate limits protect the shared infrastructure, and normal professional use never touches them. The credit-backed tools are bounded by your plan's monthly ceilings instead.

Close nine browser tabs today

Every tool lives one click from your audits, and results can be saved to your workspace instead of vanishing into a screenshot folder.

Start free Free instant audit