Evidence before opinions
When a tool reports a problem, it cites the header, tag, URL or rule that led to the finding.
Complete on-page SEO audit
Find what’s holding
your page back.
Run a complete SEO health check for any address — metadata, crawlability, structured data, links, rendering and security — with clear priorities and the evidence behind every finding.
6 categoriesevery finding cites evidence0 sign-ups
RLLABS
SEOAnalysing
98Health score
200Status OK
{ }Validated
TLSCert valid
6×Audit lenses
50focused tools
25SEO tools
25everyday utilities
25run in your browser
A useful place to start
Popular tools, ready when you are.
No bloated dashboards. Choose a focused tool, get the answer and understand what to do next.
Developer
JSON Formatter and Validator
Format, minify and validate JSON entirely in your browser.
01Open tool
DeveloperRegex Tester
Test a regular expression against your text, with every match, group and a warning for catastrophic backtracking.
02Open tool
SEOComplete single-page SEO audit
Prioritised score, findings, evidence, impact and corrections
03Open tool
SEOFull-site crawler
Crawl a whole site and get the findings no single-page check can produce: duplicate titles, missing descriptions site-wide, broken internal links and a map of every page found.
04Open tool
SEOMeta and social tag generator
Build the title, description, canonical, Open Graph and X card tags for a page, with a preview of how it will look in search results and share cards.
05Open tool
WebsiteSecurity Header Checker
HSTS, CSP, frame control, MIME sniffing, referrer and cookie flags — each judged with the value cited.
06Open tool
One focused toolkit
Four ways to get unstuck.
Start with the job in front of you. Every category is organised around a clear outcome.
01
SEO intelligence
From one-page checks to site-wide crawl evidence.
25 toolsExplore
02Developer utilities
Fast, careful tools for everyday code and data work.
19 toolsExplore
03Text essentials
Clean, count and transform content without surprises.
3 toolsExplore
04Website health
Inspect responses, certificates and browser protections.
3 toolsExplore
Complete tool library
Find the exact tool.
Base64 Encoder and Decoder
Encode and decode Base64 in your browser, including emoji and non-Latin text.
CSS Formatter and Minifier
Format or losslessly minify CSS — whitespace and comments only, values byte-for-byte untouched.
CSV to JSON Converter
Convert CSV to JSON and back, with delimiter detection and type inference that never invents precision.
Hash and Checksum Generator
SHA-256, SHA-512, SHA-384 and SHA-1 digests, with checksum comparison.
HTML Entity Escape and Unescape
Escape markup so it displays as text, or decode entities back - without ever rendering them.
HTML Formatter and Minifier
Format or minify HTML without changing what the page renders — inline whitespace is load-bearing and treated that way.
JSON Formatter and Validator
Format, minify and validate JSON entirely in your browser.
JWT Decoder
Read the header, claims and expiry of a JWT in your browser. Decodes only — it cannot verify a signature.
Markdown Preview
Preview GitHub-flavoured Markdown as you type, with sanitised HTML you can copy or download.
Random Password and Token Generator
Cryptographically secure passwords and hex tokens, with the entropy shown.
Regex Tester
Test a regular expression against your text, with every match, group and a warning for catastrophic backtracking.
SQL Formatter
Format SQL with clause-per-line layout and dialect-aware tokenizing. Layout only — nothing is ever executed.
Text and Code Diff
Compare two texts line by line and see exactly what changed, down to the word.
Unix Timestamp Converter
Convert Unix timestamps to dates and back, in your local time or UTC, with a live clock.
URL Encoder and Decoder
Percent-encode a URL or a single query value, with the difference made explicit.
URL Slug Generator
Turn a title into a clean URL slug, honestly handling non-Latin scripts.
How Roftr Labs is differentUseful answers.
Useful answers.
Nothing hidden.
Tools should help you make a decision, not just produce another score.
Private where possible
25 utilities run entirely in your browser. Your text, tokens and code do not need to leave your device.
Focused by design
Each tool does one job carefully, with plain-language limits and no invented certainty.
Built for the real web
International text, redirects, malformed markup and crawler edge cases are treated as normal inputs.
Not sure where to begin?
Start with the whole page.
Run the complete single-page SEO audit for a prioritised view of metadata, indexing, content, links, images, structured data and more.
Run a complete SEO audit