218+ tools · 15 categories · REST API live · CLI coming soon
Run any tool from your terminal via npx. No install required.
Image processing, AI-assisted regex, DNS propagation checker, and more in the pipeline.
5 recently added tools
Find duplicate rows in CSV or TSV data by comparing the whole row or a chosen set of key columns, and see exactly which data rows each duplicate group appears at.
Build an HTTP Range request header from byte ranges (explicit, open-ended, or last-N-bytes), and parse a server's Content-Range response to verify what it actually sent back.
Generate a content-hash ETag response header value using MD5, SHA-1, or SHA-256, with strong or weak (W/) validator syntax, ready to drop into a server response.
Break a cash total down into the minimum count of bills and coins from a set of denominations, or compute change owed and its breakdown from an amount due and amount tendered.
Parse a raw email header block into structured From/To/Subject fields, the Received hop chain, and SPF/DKIM/DMARC results from an Authentication-Results header.