Tools

Aspect Ratio Calculator

Calculate an image's aspect ratio from common presets, custom width/height, or an aspect-ratio pair — or upload an image to read its aspect ratio directly. Runs entirely in your browser.

LLM API Cost Calculator

Compare what your prompts cost across every major LLM — with exact token counts for OpenAI models, right in your browser.

Snowflake Cost Calculator

Estimate your monthly Snowflake bill from cloud provider, region, edition, warehouse size, storage, time travel, fail-safe, and data transfer inputs. Runs entirely in your browser.

API Key Tester

Test any AI or API key in your browser — instantly see if it's valid, and why it isn't. Nothing is stored.

Enter any WordPress site's URL to list every category with its numeric ID and slug, pulled live from the site's REST API. Useful for theme development, migrations, and API queries that need a category ID instead of a name.

Find WordPress Post ID

Enter a WordPress page or post URL to find its numeric post ID — read from the page's postid- body class, or its shortlink as a fallback. Useful for shortcodes, widgets, menus, and redirects.

Find WordPress Tag IDs

Enter any WordPress site's URL to list every tag with its numeric ID and slug, pulled live from the site's REST API. Useful for theme development, migrations, and API queries that need a tag ID instead of a name.

Find WordPress User IDs

Enter any WordPress site's URL to list its published authors with their numeric user ID and slug, pulled live from the site's REST API. Useful for author queries, theme development, and migrations that need a user ID instead of a display name.

GitHub User ID Finder

Enter a GitHub username or profile URL to look up its numeric user ID plus basic profile info — useful for API calls and integrations that need the numeric ID rather than the login name.

Source Viewer

View a website's HTML source code on mobile devices, including Chrome on Android and iOS. Just paste a URL to view the page source — with line numbers.

URL to Markdown

Paste any page URL and get back clean Markdown — pick whether to keep the title, meta description, nav, header, footer, sidebar, and JSON-LD structured data.

LinkedIn Post Date Extractor

Enter the post's shareable URL to get the post's exact creation date and time — decoded straight from the post's own ID, no LinkedIn login required.

LinkedIn Post Text Extractor

Enter any LinkedIn post URL to extract the complete text content in a clean, readable format — perfect for content analysis, research, and data processing.

LinkedIn Post URN Extractor

Enter any LinkedIn post URL to extract the unique URN (Uniform Resource Name) identifier — for API integration, data analysis, and technical applications.

LinkedIn Profile ID Finder

Enter any LinkedIn profile URL to find its numeric entity ID — useful for API integrations and technical lookups.

Bulk URL Opener

Paste a list of URLs and open every one in its own tab with a single click — handy for competitor research, SEO spot-checks, and QA passes across many pages.

Bulk URL Parameter Updater

Add or overwrite arbitrary query parameters across a whole list of URLs at once. Enter your key=value pairs, paste your URLs, and get an updated list back.

Bulk UTM Code Builder

Tag a whole list of URLs with UTM parameters at once. Enter your source, medium, campaign, term, and content values, paste your URLs, and get a tagged list back.

GS:QL Query Writer

Paste a Google Search Console performance-report URL and get a matching BigQuery SQL query for the GSC bulk-export tables — dates, and query/page/country/device filters translate straight into a WHERE clause.

Keyword Stemmer

Paste keywords or text and reduce every word to its stem using the classic Porter stemming algorithm — useful for keyword clustering and matching. Runs entirely in your browser.

Unique Word Counter

Paste any text to see the frequency of every unique word — total count, unique count, and a sortable table. Runs entirely in your browser.

Bulk URL Encoder/Decoder

Encode or decode a list of URLs (or any text) with percent-encoding, one line at a time. Paste multiple lines and get them all encoded or decoded at once — runs entirely in your browser.

XML Sitemap Analyzer

Enter a sitemap URL to see its URL count, a breakdown by path segment, and the oldest/newest lastmod dates — sitemap index files are expanded one level to show each child sitemap's URL count.

Instagram Post Date Finder

Enter any Instagram post URL to get the post's exact creation date and time.

Reddit Post Date Finder

Enter a Reddit post's URL to get its exact creation date and time. The lookup runs in your browser against a public Reddit archive.

TikTok Video Date Extractor

Enter a TikTok video's shareable URL to get its exact creation date and time — resolves vm.tiktok.com share links automatically.

Tumblr Post Date Finder

Enter any Tumblr post's URL to find out its exact creation date and time.