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JavaScript Operator Lookup VS Stillindexed

Compare JavaScript Operator Lookup VS Stillindexed and see what are their differences

JavaScript Operator Lookup

A full list of JavaScript operators with examples

Rating
0 reviews
Alternatives Is it good?
Stillindexed

Know before Google does. SEO disaster alerts for clients.

Rating
0 reviews
Pricing
Paid $39 / Monthly (Starter)
Alternatives Is it good?
boldrouter
A unified, OpenAI-compatible gateway to every major LLM provider. One endpoint, one key, one bill - with automatic routing and failover. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, JavaScript Operator Lookup seems to be more popular. It has been mentioned 1 time since March 2021.

social mentions
1 vs 0
Developer Tools popularity
100% vs 0%
alternatives listed
14 vs 10

Base details

Website, pricing, platforms and company facts side by side.

JavaScript Operator Lookup
Stillindexed
Website joshwcomeau.com stillindexed.com
Pricing —
Paid $39 / Monthly (Starter) Official pricing
Platforms —
Web
Company — Startup from Turkey · 1 - 9 employees · 2026
Listed in
Developer Tools JavaScript Tools Tech User Experience +1
SEO Monitoring SEO Tools Technical SEO Website Monitoring SEO Agency Tools Website Migration +3

About JavaScript Operator Lookup and Stillindexed

In their own words, as submitted to SaaSHub.

JavaScript Operator Lookup
Stillindexed

No description of JavaScript Operator Lookup yet.

SEO disaster monitor for freelance technical SEOs and small agencies. Checks robots.txt, meta robots, X-Robots-Tag, canonicals, status codes, redirect chains, title and H1, sitemap, SSL and domain expiry every 15 or 30 minutes per URL, then alerts by Telegram and email with what changed, where,...

Read more about Stillindexed

Features and specs

What each product offers, as listed by its team.

JavaScript Operator Lookup 5 features
Stillindexed 17 features
  • Ease of Use
    The JavaScript Operator Lookup tool provides a simple and easy-to-use interface for developers to quickly find information about JavaScript operators, improving their coding efficiency.
  • Comprehensive Information
    The tool offers a comprehensive list of JavaScript operators along with detailed explanations, examples, and related information, which can be very helpful for both beginners and experienced developers.
  • Time-Saving
    By consolidating information about JavaScript operators in one place, the tool saves developers time they might otherwise spend searching through documentation or other online resources.
  • Educational Resource
    The tool acts as an educational resource by not only listing operators but also explaining their functionality and use cases, aiding in the learning process.
  • Responsive Design
    With a responsive design, the tool is accessible across different devices, ensuring that developers can use it whether they are on a desktop, tablet, or mobile device.

Possible disadvantages

  • Dependency on Internet
    Since the tool is web-based, it requires an internet connection, which may not be available in all situations, potentially limiting accessibility.
  • Scope Limited to Operators
    The tool focuses solely on JavaScript operators, which might not cover all the needs of a developer looking for comprehensive JavaScript resources or help with other language features.
  • Potential for Outdated Information
    There is a potential risk of the information becoming outdated if the tool is not regularly maintained and updated to reflect the latest changes in the JavaScript language.
  • Lack of Interactive Examples
    While the tool provides examples, the absence of interactive coding environments means users cannot test operators directly within the tool.
  • Indexability monitoring
    Meta robots, X-Robots-Tag header and robots. txt evaluated per URL, so a noindex is caught whether it is in the HTML or a response header.
  • 15 or 30 minute check cadence per monitored URL (Agency / Starter)
    Site-level checks (robots.txt, sitemap, TLS) daily; domain expiry weekly.
  • Canonical and redirect monitoring
    Canonical target, HTTP status, and the full redirect chain, hop by hop.
  • Sitemap health
    Reachable, valid XML, URL count; sitemap index expansion.
  • Certificate Warnings
    SSL certificate and domain expiry warnings via TLS and RDAP.
  • False-positive suppression
    Critical change is confirmed by a second fetch before it alerts; flapping is held back.
  • Alerts by Telegram, Email and Slack
    Stating what changed, where, when, and the before/after. One incident, one alert, one resolved notice.
  • Weekly report per site
    Weekly "we watched, nothing broke" report per site; white-label on Agency so it can be forwarded to a client unedited.
  • Coverage shown
    Checks attempted vs pages actually loaded, per site, per week.
  • No site access needed
    Public URLs only. No Google account, no snippet, no credentials.
  • Bulk URL import
    Paste the list your audit produced; every line gets a decision, nothing is dropped silently.
  • Published crawler identity
    Fixed user agent and allowlisting guide at /bot.
  • Public canary
    A page that breaks itself every four hours and a live log of every check and alert, with measured detection latency.
  • Free checkers
    Indexability, X-Robots-Tag, robots. txt, canonical, redirects, sitemap, title/meta, H1, SSL and domain expiry, bulk (20 URLs), crawler-vs-browser diff.
  • MCP server
    The same checkers callable from Claude Code, Cursor, Codex or any MCP client, no key.
  • SEO skill generator
    SKILL.md for any host with its expected state, platform traps and a re-check runbook.
  • Migration Watch (Agency)
    14-day window with 5-minute cadence and a daily digest around a site migration.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
JavaScript Operator Lookup
Stillindexed
100% 100%
Developer Tools
0% 0%
0% 0%
SEO Monitoring
100% 100%
100% 100%
Tech
0% 0%
0% 0%
Website Monitoring
100% 100%

Questions & Answers

As answered by people managing JavaScript Operator Lookup and Stillindexed.

What makes your product unique?

Stillindexed's answer:

It publishes its own evidence instead of adjectives. A public canary page breaks itself on a fixed schedule every four hours, and the log at api.stillindexed.com/canary/log shows every check and alert with the measured detection latency (median 16 minutes to detect, 18 to alert, on the slower plan). The crawler's identity and limits are published at /bot. Every check reads what the server actually returned, meta robots, X-Robots-Tag headers, robots.txt, canonicals, redirect chains, so a noindex in a response header is caught, not just one in the HTML. Pricing is public, there is no sales call, and no site access is required.

Why should a person choose your product over its competitors?

Stillindexed's answer:

Because it interprets a URL's indexability automatically at a self-serve price. Generic change monitors (Visualping, Hexowatch, changedetection.io) diff whatever selector you configure and leave you to decide what the change means. Audit suites (Screaming Frog, Sitebulb, Ahrefs, Semrush) crawl on a schedule you read later. The SEO-aware monitors that do interpret changes start at $199 a month (SEORadar) or hide pricing behind a sales process (Conductor Monitoring). Stillindexed checks every 15 or 30 minutes, confirms a critical change with a second fetch before alerting, sends the before/after to Telegram and email, and starts at $39 a month for 15 sites. When Little Warden or Oh Dear fits better, the comparison pages on the site say so.

How would you describe the primary audience of your product?

Stillindexed's answer:

Freelance technical SEO consultants and agencies of two to ten people who manage 5 to 50 client sites on retainer, especially around site migrations. Their problem is finding out about a broken noindex, robots.txt or canonical from the client three days late. It is not built for enterprises, in-house teams at large companies, or developers who want uptime or cron monitoring.

What's the story behind your product?

Stillindexed's answer:

An accidental noindex or robots.txt block typically sits live for 24 to 72 hours before anyone notices. Search Console reports it after the indexing damage, and its reports are often days behind. Recovery takes one to three weeks after the fix, and for an agency the cost is the client relationship. Existing tools were either enterprise crawlers with sales-led pricing, or generic page-diff monitors with no SEO semantics. Stillindexed was built as the narrow thing in between: plain HTTP fetches of the directives Google's indexing decision trusts first, on a short cycle, with an alert that names the change. It was built by one person and is designed to stay maintainable by one person, which is why it does one job and publishes its own proof.

Which are the primary technologies used for building your product?

Stillindexed's answer:

Go (stdlib net/http) for the API and the checker worker, PostgreSQL 17 with River for job scheduling, Astro for the marketing site, Vite and React with TypeScript for the app, plain CSS, Docker Compose behind Traefik, Polar for billing, Telegram and email for alerts.

User comments

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

JavaScript Operator Lookup 1 mention
Stillindexed 0 mentions
  • Variable Operator using Boolean?
    If you replace your || with ?? You should get the behaviour you are after. This is a good reference for what the operators do in js: https://joshwcomeau.com/operator-lookup. Source: about 5 years ago

Tracking Stillindexed since Sep 2026.

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