Search Hacker News stories and comments via Algolia. Returns title, author, points, URL, num_comments, created_at, story/comment text. Use ?q=YOUR_QUERY and type=story (default) or type=comment, and limit=10. Built for AI coding agents researching tech discussions, debugging tips, and tech opinions.

Search Lemmy (federated Reddit alternative, fully open API) posts across instances. Returns title, community, creator, score, comments, url, body, ap_id (ActivityPub federation ID). Use ?q=YOUR_QUERY plus optional &instance=lemmy.world&limit=10. Built for AI agents researching open-source community sentiment with stable scraper-friendly API (Reddit blocks scraping; Lemmy is permissive).

Search Stack Overflow questions via Stack Exchange API. Returns title, score, answer_count, is_answered, accepted_answer_id, tags, view_count, link, created_at, owner. Use ?q=YOUR_QUERY plus optional &tag=python&site=stackoverflow|serverfault|superuser&limit=10. Built for AI coding agents finding proven solutions and Q&A.

Color palette generator, color scheme, complementary colors, analogous palette, triadic colors, monochromatic palette, tetradic, color theory, generate colors, UI design palette, web color picker, harmony colors. Generate harmonious color palette from base color using color theory.

Password generator, strong password, random password, secure password generator, crypto-safe password, password maker, generate strong password, customizable password length, pronounceable password, random secure pass. Generate cryptographically random password with custom length and character set rules.

QR code generator / QR generator / generate qrcode / text to qr / url to qr code / 2D barcode generator / make qr png / qrcode base64 image / qr code creator / generate qr code from url. Generate QR code as base64 PNG data URL. Use for URL, wifi credentials, business cards.

Generate consistent avatar URLs for any name/seed via DiceBear (19 styles incl. bottts, avataaars, pixel-art, lorelei) or UI-Avatars (initials). Returns SVG/PNG URLs and available style list. Use ?name=Alice&style=bottts. Built for AI agents auto-generating profile pics for synthetic users, comments, demos.

Suggest typo corrections for an email address. Catches domain typos (gmial.com → gmail.com) and TLD typos (.con → .com) via Levenshtein distance against 23 common domains. Use ?email=user@gmial.con. Built for AI agents validating signup forms, reducing bounce rates.

Look up Gravatar avatar URL + public profile by email. Returns md5/sha256 hashes, sized avatar URLs, default-icon variants, and profile JSON (display name, location, links, accounts) if it exists. Use ?email=user@example.com. Built for AI agents enriching user data and onboarding.

Check if a username is taken across 10 developer platforms (GitHub, GitLab, Reddit, HackerNews, dev.to, Medium, npm, PyPI, StackOverflow, ProductHunt). Returns per-platform {taken, status, url}. Use ?username=alice or ?username=alice and platforms=github,reddit. Built for AI agents helping pick handles, brand audits.

Extract dominant colors from an image URL via 64x64 downsample + 3-bit-per-channel quantization. Returns top N colors as hex/rgb plus frequency. Use url param (default 5, max 10). Built for AI agents picking theme colors, content categorization, brand palette extraction.

Detect image format from a URL using magic bytes (works even when extension or content-type lies). Returns format, content-type match flag, file size, dimensions. Use ?url=https://.... Built for AI agents validating untrusted image inputs.

Extract EXIF metadata from a JPEG/TIFF image URL. Returns camera make/model, lens, ISO, exposure, focal length, GPS coords, dimensions, datetime taken, orientation. Use url param Built for AI agents auditing photo provenance, building EXIF-stripping pipelines, or photo organization.

Get dimensions and format for an image URL. Returns width, height, type (jpeg/png/gif/webp/bmp/tiff/heic/avif), aspect ratio, file size, content-type. Use ?url=https://.... Built for AI agents validating uploads, generating srcsets, planning layouts.

ocr image, image to text, OCR API, extract text from image, image OCR, tesseract OCR, optical character recognition, scan image to text, image text recognition, image to text converter, printed text OCR. Run Tesseract OCR on any image URL. Returns extracted text with confidence. Supports English Chinese Japanese Korean German French Spanish Italian. For AI agents reading screenshots scanned documents.

Search Wikidata entities (structured knowledge graph). Returns entity id (Q-number), label, description, concept URI, aliases. Use ?q=YOUR_QUERY plus optional &lang=en&limit=10. Built for AI agents needing canonical entity disambiguation and Linked Data IRIs.

Search Wikipedia articles. Returns title, snippet (highlighted match), pageid, wordcount, and direct article URL. Use ?q=YOUR_QUERY plus optional &lang=en|de|es|zh|ja|fr&limit=10. Built for AI research agents and fact-checkers needing ground-truth article discovery (300+ languages, CC BY-SA).

Get a Wikipedia article summary by exact title. Returns extract (lead paragraph), description, thumbnail, originalimage, content URLs (desktop/mobile/edit), and wikibase_item. Use ?title=Albert_Einstein plus optional &lang=en. Built for AI agents doing literature review, biography lookup, and grounded RAG.

Get word definitions, parts of speech, and examples from Wiktionary. Returns per-language definitions with POS labels and example sentences. Use ?word=ephemeral plus optional &lang=en. Built for AI agents handling vocabulary, etymology, and translation context.

Haversine great-circle distance between two coordinates. Returns km, miles, bearing degrees. Use ?lat1=X&lng1=Y&lat2=A&lng2=B. Built for AI agents for proximity checks and routing pre-filters.

Forward geocode an address to lat/lng using OpenStreetMap Nominatim. Returns coordinates, address components, bounding box, place type. Use ?q=1600+Pennsylvania+Ave+Washington+DC plus optional and limit=5. Built for AI agents handling delivery, logistics, and map UIs.

IP geolocation via ipapi.co. Returns country, region, city, lat/lng, timezone, ISP, ASN. Use ?ip=8.8.8.8. Built for AI agents detecting user location, fraud signals, and content routing.

Reverse geocode lat/lng to a postal address via OpenStreetMap Nominatim. Returns display name, country, state, city, road, postcode. Use ?lat=38.8977&lng=-77.0365. Built for AI agents converting GPS coords to human-readable addresses.

Timezone lookup for a coordinate via timeapi.io. Returns IANA timezone, current local time, UTC offset, DST status. Use ?lat=37.78 and lng=-122.42. Built for AI agents scheduling across regions.

Current weather for a coordinate via Open-Meteo. Returns temperature, humidity, wind, precipitation, weather code with description. Use ?lat=37.78&lng=-122.42. Built for AI agents for location-aware advice, travel, agriculture.

Interest calculator, compound interest, simple interest, loan payment, mortgage calculator, annuity, APR APY, future value, present value, investment return. Compute simple/compound interest or annuity loan payments with configurable compounding frequency.

Percentage calculator, percent of, percent change, percent increase decrease, what percentage, tip calculator, discount calculator, markup, margin. Compute percent operations: X percent of Y, what percent X is of Y, percent change from X to Y, X increased or decreased by Y percent.

Random number generator / random integer / random float / dice roll / lottery numbers / coin flip / cryptographically secure random / RNG / number picker. Generate cryptographically secure random numbers in a range with optional batch count.

Statistics calculator / mean median mode / standard deviation variance / quartiles / min max range / descriptive statistics / summary statistics / dataset analysis. Compute statistical measures: mean, median, mode, stddev, variance, min, max, range.

Unit converter / measurement conversion / metric imperial / length weight temperature speed area volume / kilometer to mile / kg to pound / celsius to fahrenheit / inch to cm / mph to kmh / bytes to gigabytes. Convert between common units of measurement: length, weight, temperature, area, volume, speed, data size, time.

Parse YAML frontmatter from markdown (the --- block at top). Returns parsed dict, raw frontmatter, and body without frontmatter. Use ?url=... or ?text=.... Built for AI agents indexing Jekyll/Hugo/Astro/Eleventy content sites.

Extract all links from markdown: inline, reference, autolinks, images. Returns array of {type, text, url, title}. Use ?url=... or ?text=.... Built for AI agents link auditing, broken-link detection, sitemap crawling.

Compute markdown stats: words, characters, paragraphs, headings, code blocks, links, images, reading time (200 wpm). Use ?url=... or ?text=.... Built for AI agents auditing docs, estimating cost/length for LLM ingest.

Strip all Markdown syntax, returning plain text (no headings, links, code, emphasis, lists). Use url param or ?text=.... Built for AI agents feeding markdown to embeddings, TTS, or fulltext search.

Extract Markdown table of contents (h1-h6 headings) with anchor slugs. Returns array of {level, text, anchor}. Use url param or ?text=markdown_here. Built for AI agents indexing docs, generating navigation, building doc search.

Detect text language with rule-based unicode-script + Latin stopword matching. Returns ISO 639-1 code, detection method, confidence. Use ?text=Bonjour+le+monde. Built for AI agents routing inputs by language, content moderation, and analytics.

Compute readability scores for English text (Flesch Reading Ease, Flesch-Kincaid Grade, ARI, Coleman-Liau, Gunning Fog, SMOG). Returns all indices plus complexity stats and reading-level interpretation. Use ?text=Your+text+here. Built for AI agents auditing content clarity and grade-level fit.

Lexicon-based sentiment scoring (AFINN-style). Returns raw score, length-normalized score, label (positive/neutral/negative), positive/negative word hits. Use ?text=This+product+is+amazing. Built for AI agents doing review analysis, social monitoring, and feedback triage.

Translate text between languages via MyMemory (free, 50+ languages). Returns translated text and match quality. Use ?q=Hello+world&source=en&target=zh (or auto for source). Built for AI agents handling multilingual content, localization pipelines, and cross-border ops.

Get NPM package dependency tree with counts (runtime, dev, peer, optional) and version constraints. Use ?package=react&version=18.2.0. Built for dependency audit and bundle bloat analysis.

Comprehensive NPM package safety report combining npm registry metadata, OSV vulnerability database, npms.io quality scores, and GitHub repo health. Returns risk_summary (low/medium/high/critical), CVE breakdown by severity, maintainer info, dependency counts, last-commit recency, archival status. Use ?package=react or ?package=react&version=18.2.0. Built for AI code-review agents and supply-chain auditors.

Query Open Source Vulnerabilities (OSV) database for known CVEs in an NPM package. Returns vulnerability list with severity, summary, affected version ranges, fix versions, references. Use ?package=react&version=18.2.0. Backed by Google-maintained OSV (industry standard).

Password breach check via Have I Been Pwned, HIBP API, k-anonymity, SHA-1 hash prefix lookup, known compromised passwords. Privacy-safe: only hash prefix sent.

Password entropy calculator, Shannon entropy, bits of randomness, charset size, mathematical password strength metric for security audits.

Diceware passphrase generator / multi-word random / memorable secure / xkcd 936 style / random word combinations from curated wordlist.

Password policy validator / configurable rules / min length / uppercase / lowercase / digit / special / enterprise password policy check.

Password strength estimator, score 0-4, zxcvbn-style heuristics, crack time, weak password detection. Returns score, feedback, estimated crack time.

pdf parser, pdf extraction, pdf to structured json, extract pdf pages, pdf page extractor, pdf chunker, pdf RAG indexer, pdf document parser, pdf with metadata, pdf page chunks. Extract structured text from any PDF URL with page-level chunks and metadata. Returns per-page text array, char counts, info dict (title, author, creator, dates). For AI agents doing document QA, RAG indexing, contract analysis, citation extraction. Page-level chunks enable precise context-window management.

pdf metadata, pdf info, pdf properties, pdf author, pdf title, pdf creation date, pdf page count, pdf version, pdf creator, pdf producer, pdf document info. Extract PDF metadata only, no body parsing, fast and cheap. Returns title, author, subject, creator, producer, creation and modification dates, page count, PDF version. For AI agents indexing PDF catalogs, file validation, document organization workflows.

pdf to text, extract text from pdf, pdf text extractor, pdf parser, pdf to plain text, extract pdf text, pdf text extraction, read text from pdf, pdf text API, pdf to txt, parse pdf text. Fetch PDF from URL and return extracted plain text. Minimal token footprint for summarization and analysis workflows. Supports text-based PDFs (for scanned images use image OCR). For AI agents doing document analysis, RAG indexing, contract review, summary pipelines.