Grammar Check is a grammar checker and spell check API that inspects text for spelling and grammar errors, returning the corrected wording, error count, and a modified flag. Paid plans add detailed rule descriptions, character offsets, and suggestions for every detected mistake.

Gravatar Lookup fetches public Gravatar profiles and avatar image URLs for any email address. It returns the user's display name, username, biography, location, company, and job title.

GUID Generator is a GUID generator API that creates RFC 4122 version 4 GUIDs in standard, uppercase, hyphen-free, or brace-wrapped formats. Pass a count and formatting style to receive a batch of unique IDs matching your structural requirements.

Hangman Word Generator provides random hangman words for word games, with difficulty levels based on word length and, on paid plans, category filtering.

USDA Hardiness Zone looks up the plant hardiness zone by ZIP code, mapping any US ZIP code to its zone title and temperature range. Paid plans add the zone classification code, Celsius values, and plant survival recommendations.

Hash Generator computes cryptographic hashes for any text string across algorithms such as MD5, SHA-256, SHA-512, and BLAKE2. It outputs digests for single or multiple algorithms in one request.

Hashtag Generator creates relevant hashtags from any plain text or post caption. Pass in a text snippet to receive an array of suggested social tags, with paid plans able to customize the tag count.

HEIC Converter transforms Apple HEIC and HEIF images to web-friendly formats. Perfect for processing iPhone photos that need to be converted for websites, apps, or services that don't support HEIC.

Historical Events is a world history API that searches historical records by keyword to find matching events and their detailed descriptions. Paid plans add exact calendar dates and queries by year or date.

HMAC Generator creates Hash-based Message Authentication Codes for data integrity and authentication. Supports SHA-256, SHA-384, SHA-512, SHA-1, and MD5 algorithms.

Horoscope fetches daily horoscope readings and sign details for any of the twelve zodiac signs. Pass a sign name to receive today's forecast text; paid tiers add birthdate lookups, mood, lucky numbers, sign compatibility, and sign facts like the ruling planet, opposite sign, brightest star and days until the sign's season.

HTML Entities Encoder/Decoder converts special characters into safe HTML entities or restores encoded strings back to standard text. Pass any HTML markup or text snippet to receive the converted string, a replacement count, and a list of modified characters.

HTML to Image is an HTML to image API that renders HTML code into a high-quality PNG image. Paid plans add custom dimensions and JPEG or WebP output.

This HTML to PDF API renders raw HTML markup into downloadable PDF files. Send your escaped HTML string to receive a signed download link, an expiration timestamp, and the generated document filename.

HTML to Text extracts clean plain text from raw HTML markup, reporting word counts and character counts. It identifies main article bodies automatically, records the extraction method used, and notes whether parsing succeeded.

HTTP Status Code Lookup decodes any HTTP status code by returning its standard name and detailed description. Provide a numeric code to inspect its meaning and response behavior across standard ranges.

Human Name Parser splits full name strings into first, middle, and last names, titles, nicknames, and suffixes. It also generates initials directly from the detected components.

IBAN Validator checks an IBAN's mod-97 checksum, its length and format for the country, and national check digits where the country defines them. It returns whether the IBAN is valid, the country and the reasons it fails. Paid plans add the bank code, branch code and account number, the correct check digits and the SEPA flag.

IFSC Lookup is an IFSC code search API that verifies Indian bank branch details from any IFSC code, returning the bank name, branch, street address, city, district and state, plus the state's ISO code and the bank and branch codes. Paid plans add MICR, SWIFT and the NEFT, RTGS, IMPS and UPI flags.

Image Caption generates natural language descriptions for uploaded image files. Upload a JPG, PNG, or GIF up to 5MB to receive an automated caption for alt text and media tagging.