img-categorize.onrender.com

Zero-shot image categorization (CLIP). POST {"image": "<https url or data URI>", "labels": ["optional", "custom"]} -> ranked labels with confidence scores.

Image captioning. POST {"image": "<https url or data URI>"} -> one-sentence natural-language description.

OCR (English). POST {"image": "<https url or data URI>"} -> extracted text with confidence score.

CLIP image embedding. POST {"image": "<https url or data URI>"} -> 512-dim vector for similarity search.

Cryptographic hashes. POST {"text": "...", "algorithms": ["sha256","md5"]} -> hex digests (default md5, sha1, sha256, sha512).

HMAC signature. POST {"text": "...", "key": "...", "algorithm": "sha256"} -> hex and base64 signature.

Generate UUIDs. POST {"count": 5, "version": "v4"} -> list of UUIDs (max 100).

Base64 encode or decode. POST {"text": "...", "mode": "encode"|"decode", "urlSafe": false} -> result.

URL-safe slug from any text. POST {"text": "Hällö Wörld!"} -> {"slug": "hallo-world"}.

Convert text case. POST {"text": "...", "to": "camel"|"snake"|"kebab"|"pascal"|"upper"|"lower"|"title"} -> converted text.

Text statistics. POST {"text": "..."} -> characters, words, sentences, paragraphs, reading time, top words.

Test a regular expression and extract matches. POST {"text": "...", "pattern": "\\d+", "flags": "g"} -> matches with groups and indices.

Compare two texts. POST {"a": "...", "b": "...", "mode": "lines"|"words"|"chars"} -> unified diff plus added/removed counts.

Detect the language of a text. POST {"text": "..."} -> ISO 639-3 code and name.

Word and n-gram frequency analysis. POST {"text": "...", "ngram": 1, "limit": 20, "stopwords": true} -> ranked terms.

Generate placeholder text. POST {"paragraphs": 2, "wordsPerParagraph": 40} -> lorem ipsum text.

Format, minify or validate JSON. POST {"json": "...", "mode": "pretty"|"minify"|"validate", "indent": 2} -> formatted output or validation error with position.

Query JSON with a dot/bracket path. POST {"json": "...", "path": "users[0].name"} -> the value at that path. Supports [*] to map over arrays.

Convert a JSON array of objects to CSV. POST {"json": "[{...}]", "delimiter": ","} -> CSV text.

Convert CSV to JSON. POST {"csv": "...", "header": true, "delimiter": ","} -> array of objects (or arrays when header is false).

Convert between YAML and JSON. POST {"text": "...", "to": "json"|"yaml"} -> converted document.

Convert XML to JSON. POST {"xml": "<root>...</root>"} -> parsed object.

Render Markdown to HTML. POST {"markdown": "# Title"} -> HTML string.

Decode a JWT without verifying it. POST {"token": "eyJ..."} -> header, payload, expiry status. Signature is NOT verified.

Parse an RSS or Atom feed. POST {"url": "https://..."} or {"xml": "..."} -> feed title and items with links and dates.

Parse a sitemap.xml (including sitemap indexes). POST {"url": "https://example.com/sitemap.xml"} -> URLs with last-modified dates.

PDF text extraction. POST {"pdf": "<https url or data:application/pdf base64 URI>"} -> plain text, page count and metadata.

Inspect HTTP response headers for a URL. POST {"url": "https://...", "method": "HEAD"} -> status, headers, timing, redirect chain.

Expand a shortened URL by following redirects. POST {"url": "https://bit.ly/x"} -> final destination and hop chain.

Inspect a TLS certificate. POST {"domain": "example.com", "port": 443} -> issuer, subject, validity dates, days until expiry.

Domain registration data via RDAP. POST {"domain": "example.com"} -> registrar, creation/expiry dates, nameservers, status.

Fetch and interpret robots.txt. POST {"url": "https://example.com", "userAgent": "GPTBot", "path": "/"} -> whether crawling is allowed, plus sitemaps.

Extract page metadata: title, description, Open Graph, Twitter card, canonical, favicon, language. POST {"url": "https://..."}.

Resolve a hostname to IPs and reverse-resolve. POST {"host": "example.com"} -> A/AAAA records and PTR names.

Validate an email address: syntax plus live MX record check on the domain. POST {"email": "[email protected]"} -> deliverability signals.

HTML to Markdown. POST {"url": "<https url>"} or {"html": "<raw html>"} (+ optional "mode": "article"|"full", default article) -> clean LLM-ready markdown with title/byline.

DNS lookup. POST {"domain": "example.com", "type": "A"|"AAAA"|"MX"|"TXT"|"NS"|"CNAME"|"SOA"|"all"} -> resolved records.

Convert between units. POST {"value": 5, "from": "km", "to": "mi"} -> converted value. Supports length, mass, volume, time, area, speed, data, pressure, energy and temperature (c/f/k).

Convert a number between bases. POST {"value": "255", "from": 10, "to": 16} -> converted string (bases 2-36).

Convert colours between hex, RGB and HSL. POST {"color": "#2563eb"} -> hex, rgb, hsl and luminance/contrast info.

Convert timestamps and dates. POST {"value": 1735689600, "timezone": "Europe/Stockholm"} or {"value": "2026-01-01T00:00:00Z"} -> unix seconds/ms, ISO, and formatted local time.

Difference between two dates. POST {"from": "2026-01-01", "to": "2026-12-25"} -> days, hours, business days and a human summary.

Explain a cron expression and list upcoming run times. POST {"expression": "0 9 * * 1-5", "count": 5, "timezone": "UTC"}.

Great-circle distance between two coordinates. POST {"from": {"lat": 59.33, "lon": 18.07}, "to": {"lat": 51.51, "lon": -0.13}} -> km, miles and bearing.

Convert currency at current or historical reference rates (ECB via Frankfurter). POST {"amount": 100, "from": "EUR", "to": "SEK", "date": "2026-01-15"}.

Validate an identifier with the Luhn checksum (credit cards, IMEI, Swedish personnummer). POST {"number": "4111111111111111"} -> validity and detected card scheme.

Parse and validate a phone number. POST {"phone": "+46701234567", "country": "SE"} -> validity, type, and E.164/national/international formats.

Validate an IBAN (checksum and country length). POST {"iban": "SE45 5000 0000 0583 9825 7466"}.

Percentage maths. POST {"mode": "change"|"of"|"increase"|"decrease", "a": 120, "b": 150} -> result with explanation.

Image dimensions and properties without any ML. POST {"image": "https://..."} -> width, height, aspect ratio, format, file size, transparency.