The index
Everything we have made.
Here is the whole index — what runs in your browser, what runs in the cloud, what we wrote, and what you can fork.
- 49browser apps and games
- 129cloud tools
- 27free guides
- 120open repositories
Free · runs in your browser
Games and apps you can use right now
49 of our apps run embedded on our own arcade page — no account, no install, nothing to pay. Plus a tool built into this site, and a course builder.
On the Apify marketplace
129 cloud tools we built
APIs that do one job each — convert a file, audit a page, parse a feed, scan a token. They run on someone else's marketplace rather than here, they are metered by the run, and the cheapest is $0.0004 per event. Strangers ran them 3628 times in the last 30 days.
Said plainly, because the rest of this site is free and this section is not: these are an experiment, not a business. Everything on broke2builtai.com itself is free to use, and nothing here is required to use anything else we make.
Developer tools 78
- AMP Checker - Validate AMP Markup & amphtml Links
Check a page's AMP setup: is it AMP, the linked amphtml URL, required AMP markup, and validation issues.
- App Store Keywords Scraper
See which iOS apps rank for any App Store keyword, in search order: rank, app, seller, price, rating and rating count, category, version, size and update date.
- arXiv Papers Scraper
Search arXiv and get one row per paper: title, full abstract, every author, categories, the bare arXiv id plus its version, a direct PDF link, DOI and journal reference.
- Barcode Generator
Barcode PNGs by API: QR, Code128, EAN-13/8, UPC-A/E, ITF-14, DataMatrix, PDF417, Aztec + more (bwip-js engine).
- Base64 Encode / Decode
Encode or decode Base64 with auto-detection and content-type sniffing (PNG/JPEG/PDF/JSON/text).
- Broken Image Checker
Scan a page for broken images: every img src/srcset HEAD-checked for 404s/errors/non-image types, plus missing-alt count.
- Broken Link Checker
Broken link checker: give it a start URL, it checks every link on the page and returns the broken ones as JSON — link URL and HTTP status code.
- Charset Checker
Verify a page's character-encoding: HTTP vs meta charset, http-equiv, XML, BOM, and mismatch/mojibake risks.
- Clinical Trials Scraper
Search ClinicalTrials.gov and get one row per trial: NCT id, status, phase, enrollment, sponsor, conditions, interventions, eligibility and site countries.
- Complete Site Audit
Full website health audit in one call: SEO, security headers, social tags, crawlability, and tech stack, scored into an A–F grade with one prioritized issue list.
- Cookie Scanner
Scan a page's cookies: each Set-Cookie parsed with Secure/HttpOnly/SameSite/expiry, third-party & tracker flags, GDPR category, security issues.
- Cron Expression Parser
Validate up to 50 cron expressions per run: plain-English description + timezone-aware next fire times (DST-correct, any IANA zone), 5/6-field, @shortcuts, names, dom/dow OR rule.
- CSV Profiler
Profile any CSV by URL or paste: per-column types, null rates, unique counts, min/max/mean/median/stddev, top values, quality warnings (mostly-null, mixed-type, constants, identifiers).
- CSV to Excel Converter
Convert CSV files to Excel spreadsheets by URL - proper quoted-field parsing, custom delimiters, headers detected, column widths set.
- CSV to JSON Converter
Convert CSV to JSON via API - from a file URL or pasted raw text (fields: url or csv).
- dev.to Articles Scraper
Scrape dev.to by tag or author: title, author, organization, publish date, reactions, comments, a combined engagement total, reading time, tag list and the AI-disclosure label.
- DMARC Record Checker
Check DMARC for up to 200 domains per run: policy, pct, rua/ruf reports, grade (enforced/monitor/missing) and plain-English issues.
- DNS Records Lookup
Look up every DNS record type for a domain in one call.
- Domain Availability Checker
Check if a domain is available to register.
- Fake Data Generator
Synthetic test datasets from your schema: 20 field types, persona-coherent rows (email matches the row's name), seed = fully deterministic reruns, safe demo-only email domains.
- Favicon Extractor
Find every icon a site declares - link icons, apple-touch, mask-icon, web-manifest icons, favicon.ico fallback - with sizes/types and a best-icon pick.
- Favicon Fetcher
Fetch any website's favicon and get it back as a base64 data URI plus a hosted PNG/ICO file URL, with content-type and real pixel dimensions.
- GitHub User Scraper
Look up GitHub users by login or profile URL, or search by location, language and follower count.
- Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 and HMAC hashes of text or a fetched file, in hex and base64 - all algorithms in one call.
- HTML Comment Extractor
Extract HTML comments from any page and flag sensitive ones - TODO/FIXME, passwords, API keys, tokens, internal notes.
- HTML Entity Encoder & Decoder
Encode text to HTML entities or decode entities back, with auto-direction - named, decimal & hex references, emoji-safe.
- HTML to Markdown Converter
Convert a page (by URL) or raw HTML to clean GitHub-Flavored Markdown - headings, links, fenced code, tables, strikethrough.
- HTTP Headers Inspector
Fetch every HTTP response header of any URL, plus a security-header analysis (HSTS, CSP, X-Frame-Options) with an A-F grade and server fingerprint.
- Image Converter
Convert an image from PNG to JPEG, or to WebP, AVIF, PNG, GIF or TIFF, with optional resizing, quality control and metadata stripping.
- Image Extractor
Extract every image on a web page as JSON: absolute src, alt text, width/height, loading, srcset, plus og:image and twitter:image.
- Image Metadata & EXIF Extractor
Read any image URL and get dimensions, format, camera make/model, lens, ISO, shutter, aperture, focal length, capture date and GPS coordinates with a map link.
- JSON Schema Inferer
Infer a draft-07 JSON Schema from any JSON URL or raw sample: types, required fields, email/date-time/uuid/uri formats, small enums, merged array-item schemas.
- JSON to CSV Converter
Convert a JSON file by URL into a downloadable CSV - column union across records, proper quoting, Excel-friendly CRLF, one CSV per array for object-of-arrays input.
- JSON to Excel Converter
Convert JSON to an Excel spreadsheet by URL - arrays of records become clean XLSX sheets with headers, column widths set, one sheet per key for object-of-arrays.
- JSONPath Extractor
Evaluate up to 50 JSONPath expressions against pasted JSON or a URL: every match returned with its JSON Pointer and value, filters/wildcards/recursive descent supported (jsonpath-plus 10.3).
- JWT Decoder - Header, Claims, Expiry (Decode Only, No Keys)
Decode up to 50 JWTs per run: header, payload, iss/sub/aud, humanized iat/exp/nbf, expiry verdict, security warnings (alg=none, no-expiry, sensitive claims).
- Link Extractor
Extract every link from any webpage. Input: a list of page URLs.
- Markdown to HTML Converter
Convert Markdown to safe GitHub-flavored HTML by URL or text - anchored headings, table of contents, script/iframe stripping.
- Markdown TOC Generator
Paste-ready TOC for any markdown doc or URL: GitHub-compatible anchors, nested indentation, duplicate headings deduped, code fences ignored, setext +
- Number Base Converter
Radix conversion that never corrupts big values: BigInt throughout, so 2^64-1 converts exactly (floats fail past 2^53).
- Open Library Books Scraper
Search Open Library by title, author, subject or ISBN and get one row per work: authors, first publish year, edition count, a real ISBN-13, subjects,
- Page Weight Analyzer
Estimate page weight and get performance hints from one fetch (no headless): HTML/transfer size, script/style/image/font counts, render-blocking, fixes.
- Password Strength Analyzer
Analyze password strength — entropy in bits, crack-time estimate, and specific weaknesses (common passwords, patterns, repeats).
- PDF Metadata Extractor
Extract a PDF's metadata by URL: page count, version, title, author, producer, keywords, dates and a text preview, without full parsing.
- Print Stylesheet Checker
Check if a page is print-friendly: print stylesheets, @media print blocks, inline print rules, and page-break hints.
- Profanity Detector
Screen up to 1,000 texts per run against a tiered profanity wordlist with obfuscation heuristics (leet, spacing, partial masks) — severity, exact posi
- Public Holidays Scraper
Public holidays for 200+ countries and any year from 1975 to 2075: date, weekday, weekend flag, local and English names, nationwide vs regional with the subdivision list.
- PubMed Articles Scraper
Search PubMed and get one row per article: title, full author list, journal, volume/issue/pages, DOI with a resolvable link, PMCID, publication types and languages.
- QR Code Generator API
Generate QR codes via API. Input: content (URL, text, WiFi, vCard and more) plus optional size, margin, colors, and error-correction level.
- Redirect Chain Checker
Trace any URL redirect chain: every 301/302 hop with status code and Location, the final destination, hop count, plus redirect loops, long chains, insecure http hops and 302-vs-301 issues.
- Regex Tester
Test up to 50 regex patterns against sample text by API: all matches with indexes + named groups, plain-English pattern explanation, ReDoS heuristics
- RSS Feed Finder
Discover every feed a site exposes: declared link rel=alternate RSS/Atom/JSON plus common feed paths, validated & de-duplicated.
- RSS Feed Parser
RSS feed parser for developers and AI agents: pass any RSS or Atom feed URL as input and get back clean, structured JSON items (title, link, date, and other feed fields).
- Security Headers Checker
Security headers checker for any URL: pass a list of URLs, get one JSON record per URL with the observed CSP, HSTS, X-Frame-Options and related header
- Sentiment Analysis API
Sentiment analysis for any text via API. Input: text string(s).
- SEO Audit Tool
SEO audit for any URL or whole site: crawl mode finds redirect chains, broken links, duplicate titles; page mode checks title/meta, headings, schema, robots.txt, sitemap, canonical.
- SPF Record Checker
Validate SPF for up to 200 domains per run: parsed mechanisms, DNS lookup count vs the RFC 7208 limit of 10, all-qualifier and plain-English issues.
- SSL Certificate Checker
Live TLS handshake for up to 200 hosts per run: issuer, SANs, days-to-expiry, full chain walk, negotiated protocol, self-signed/expired diagnosis with exact error.
- Stack Overflow Scraper
Search Stack Overflow or any Stack Exchange site and get one row per question: score, answer count, views, tags, author reputation and ISO dates.
- Subdomain Finder
Enumerate a domain's subdomains from Certificate Transparency logs, with an optional live DNS resolve.
- Table Extractor
Table extractor for webpages: pass a URL and get every HTML data table back as structured rows — JSON via the API or dataset, CSV/Excel via one-click export.
- Text Case Converter
Round-trip case conversion done right: camelCase, PascalCase, snake_case, kebab, CONSTANT_CASE, Title, Sentence, dot.case, slug — with correct acronym
- Text Entity Extractor
Regex extraction of 11 structured entity types from up to 100 texts per run: emails, phones, URLs, IPs, dates, times, money, percentages, hashtags, me
- Text Statistics API
Exact counts for any text: characters with and without spaces, words, unique words, sentences, paragraphs, syllables, longest words, per-word and per-sentence averages, and lexical diversity.
- Timestamp Converter
Any timestamp shape in (unix s/ms auto-detected, ISO, "now") — every form out: unix, ISO 8601, RFC 2822, DST-correct IANA timezone rendering, real ISO
- Unit Converter
Physical-unit conversion by API: kg/kilos/kilogramme all resolve, temperature uses real formulas (212F = exactly 100C, release-tested), every result i
- User-Agent Parser
Parse up to 1,000 User-Agent strings per run: browser + version, OS, device, engine, CPU, and isBot verdict covering search crawlers, AI crawlers (GPT
- UUID Generator
Generate up to 10,000 ids per batch: UUID v4, time-sortable UUID v7, ULID, NanoID, 8-char short codes — CSPRNG-backed, several kinds per run.
- Web Form Extractor
Extract all forms from any page with action, method, enctype and every field (name/type), plus password/email/file flags.
- Webpage Metadata Extractor
Extract webpage metadata from any URL. Input a URL, get one JSON record with the page title, meta tags, OpenGraph, Twitter Card, and JSON-LD structured data.
- Website Color Palette Extractor
Extract a website's color palette - hex/rgb/hsl from styles and theme-color meta - normalized and ranked by frequency.
- Website Font Detector
Detect the fonts a site uses: @font-face + web-font files, font-family stacks, and Google/Adobe/self-hosted/system sources.
- Website Screenshot
Take a full page screenshot of a website.
- Website Technology Detector API
Detect what a website is built with via API.
- Website Uptime Checker
Check whether a website is up or down — a health check and uptime monitor without a subscription.
- WHOIS Lookup API
Look up who owns a domain and when it expires.
- XML to JSON Converter
Convert any well-formed XML by URL into clean JSON - attributes preserved, repeated elements as arrays, root element reported.
- YAML to JSON Converter
Convert YAML into JSON, or JSON back into YAML, from pasted text or a file URL.
SEO 21
- AI Overview Visibility Tracker
See which domains Google cites in its AI Overview for your keywords, and the exact passage it quoted from each.
- AI Readability Checker
Audit a site the way AI crawlers see it: robots.txt rules per bot (GPTBot, ClaudeBot, PerplexityBot), real per-bot fetches, and how much text exists before JavaScript runs.
- Core Web Vitals Checker
Bulk Core Web Vitals audits via the official PageSpeed Insights API: score, LCP, CLS, TBT + real-user CrUX assessment per URL.
- Domain Age Checker
Input: one domain or up to 100 domains. Output per domain: the WHOIS registration date, exact age in days and years, and a maturity class (new under 1y, established 1-5y, mature 5y+).
- Heading Structure Outliner
Extract a page's H1-H6 heading structure as an ordered outline with SEO issue flags (missing/multiple H1, skipped levels).
- Meta Robots Auditor
Indexability verdict per URL from ALL the signals: meta robots, meta googlebot, the X-Robots-Tag header (the one checkers miss), canonical + self-canonical check — with the exact reasons.
- Mixed Content Checker
Find insecure http:// resources on HTTPS pages — the mixed content browsers block and that breaks the padlock.
- Mobile-Friendly Checker
Batch mobile-friendliness by API: viewport meta fully parsed, @media in inline AND linked CSS, srcset/picture, fixed widths, tiny fonts, Flash, touch
- Open Graph & Twitter Card Extractor
Extract Open Graph, Twitter Card, article, fb & Pinterest tags plus per-network share previews (Facebook/Twitter/LinkedIn) from any URL.
- Outbound Link Auditor
Audit a page's external links with evidence per link: rel/nofollow/sponsored flags, unsafe target=_blank (tabnabbing), non-HTTPS, live HEAD/GET status probes + redirect resolution.
- Robots Rule Tester
Test URLs against robots.txt with real Google semantics: longest-match, Allow wins ties, UA group selection (test Googlebot, GPTBot, ClaudeBot...), wildcards.
- robots.txt Analyzer
Parse and audit any site's robots.txt in one call: user-agent groups, allow/disallow rules, declared sitemaps, and crawl-block issues like an accidental site-wide Disallow.
- Sitemap Analyzer
Analyze any XML sitemap in one call: auto-discovery via robots.txt, URL counts, sitemapindex vs urlset detection, size, lastmod and HTTPS issue flags.
- Sitemap URL Extractor
Get every URL out of a sitemap.xml, a sitemap index (followed recursively), or a bare domain via robots.txt.
- Slug Generator
Bulk URL slugs with real transliteration: diacritics, Cyrillic, Greek, symbol words (& -> and), batch-unique suffixes on collisions, custom separator + maxLength.
- Social Preview Checker
See how any URL looks when shared on social: the rendered preview (title, description, image) from Open Graph and Twitter Card tags, with missing-tag issues flagged.
- Structured Data Extractor
Extract all structured data from any page - JSON-LD, Microdata, and RDFa - plus the schema.org types found.
- Text Readability Analyzer
Score up to 100 texts per run with Flesch, Flesch-Kincaid, Gunning Fog, SMOG, ARI and Coleman-Liau + consensus grade, audience label and concrete fix-it tips.
- Webpage Keyword Density
Keyword density of any URL's MAIN content (nav/footer boilerplate stripped first): ranked unigrams + bigrams + trigrams with density %, plus 1-100 word-cloud weights.
- Webpage Readability Grade
Grade any URL's readability the honest way: main content extracted first (nav/footer/sidebar boilerplate stripped, <main>/<article> preferred), then F
- White-Label SEO Audit Report (HTML)
Crawl a site and get back a finished audit report with your agency name and brand colour on it.
Lead generation 8
- Bulk Email List Verifier
Clean a list before you send it. Catches null-MX domains that guarantee a bounce, keeps implicit-MX domains other tools wrongly delete, flags typo dom
- Bulk Tech Stack Detector
Paste a list of domains and get what each one runs: CMS, framework, hosting, analytics, payments, support widgets.
- Company Enrichment
Turn a list of domains into company profiles: name, description, logo, on-domain emails, phone, address, social profiles and tech stack.
- Disposable Email Detector
Check up to 500 emails/domains per run against a 7,582-domain disposable blocklist + keyword and pattern heuristics, with ~30 legit webmail providers whitelisted.
- Email Deliverability Checker
Audit MX + SPF + DMARC + DKIM (9 selectors) for up to 100 domains per run: weighted 0-100 score, letter grade and copy-paste fixes.
- Email Finder & Lead Scraper
Find business emails, phone numbers and social links on any website.
- Email Verifier & Validator
Verify email addresses in bulk and clean your list before you send.
- MX Record Checker
Check MX records for up to 200 domains or email addresses per run: priority-sorted exchanges resolved to IPs, RFC 5321 implicit-MX fallback, canReceiveEmail verdict.
AI 7
- Audio & Video to Text (Whisper)
Audio/video URL to transcript + SRT with Whisper, no extra API key.
- Base64 Encoder & Decoder API
Encode text or file URLs to Base64 and data URIs, or decode Base64 to text and downloadable files.
- Excel to JSON Converter
Convert XLSX or XLS spreadsheet URLs to JSON via API.
- PDF Text & OCR Extractor
Extract the text from a PDF file. Born-digital or scanned PDFs by URL; OCR runs only when a PDF lacks a text layer.
- Text Keyword Extractor
Extract ranked multi-word keyword phrases (RAKE-scored) + top words from up to 200 texts per run.
- Text Language Detector
Detect the language of up to 200 texts per run: ISO 639-3 code, English name, confidence and ranked alternatives (franc trigram model, in-process, texts never leave the run).
- Webpage Text Extractor
Get the readable text off a web page. Pass article or page URLs and get the clean main text back as Markdown or plain text, one result per URL, with ads, navigation and boilerplate stripped.
Social 6
- Bluesky Posts Scraper
Scrape any public Bluesky account: post text, ISO dates, likes, reposts, replies, quotes and a combined engagement total, one row per post.
- Steam Reviews Scraper
Scrape Steam game reviews: recommended or not, full text, helpful and funny votes, and the author's playtime AT THE TIME OF REVIEW in hours.
- Telegram Channel Scraper
Scrape any public Telegram channel: post text, publish date, view counts, photo/video flags, forward and reply markers, and a direct link.
- TikTok Video Transcript Extractor
Extract TikTok video transcripts from native captions: clean text, timestamps, SRT, language selection (ISO codes), batch URLs, short links and bare video IDs.
- Tumblr Posts Scraper
Scrape any public Tumblr blog: post title, id, publish date, full tag list, word count and a reblog flag, one row per post.
- YouTube Comments Scraper
Scrape YouTube comments without an API key or cookies: top-level plus replies, top or newest sort, exact like counts (not rounded), author channel IDs, batch videos.
Video 4
- SRT to VTT Converter
Convert SRT to VTT or VTT to SRT, strip timings to a plain text transcript, and resync cues by any offset.
- YouTube Playlist Extractor
Every video in a YouTube playlist as clean JSON: video ID, title, watch URL, channel, duration in seconds, view count and publish age.
- YouTube Search Extractor
Search YouTube without an API key. Videos, channels, playlists, Shorts as JSON.
- YouTube Video Transcript Extractor
Extract a YouTube transcript without an API key: clean text, timestamps, and SRT.
News 2
- Google News Scraper
Search Google News by keyword and get one row per article: clean headline, publisher, link and publish date.
- Substack Posts Scraper
Scrape any Substack newsletter by handle OR custom domain: post title, author, publish date, subtitle, cover image and word count, one row per post.
Automation 2
- RSS Feed Change Monitor
Watch RSS and Atom feeds and get only what changed since the last run.
- RSS Feed Change Monitor
Watch RSS and Atom feeds and get only what changed since the last run.
Agents 1
- Base Token Risk Scanner
Vet any Base (chainId 8453) token before buying.
Free · open source
120 open repositories
Agents, engines, benchmarks, games, research artifacts and the failures. Fork any of it, change it, ship your own and give it away — that is the point of the place, not a licence footnote.