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Every yhstky tool in one place — free forever, no sign-up, and 100% private: everything runs in your browser, nothing is uploaded anywhere. Browse by category below.
Code
View all →JSON Formatter
Format and validate JSON free with yhstky's 2026 JSON formatter. Beautify minified data and catch syntax…
Open →Password Generator
Generate strong random passwords free with yhstky's 2026 password generator. Set the length and character types,…
Open →Regex Tester
Test regular expressions free with yhstky's 2026 regex tester. Match patterns against sample text with live…
Open →URL Encoder & Decoder
Encode and decode URLs instantly — free, no sign-up. Live sync as you type, bulk line-by-line…
Open →UUID Generator
Generate free UUIDs online in 2026 with yhstky's UUID generator. Create secure RFC 4122 version 4…
Open →Everyday
View all →Barcode Generator
Generate free barcodes online in 2026 with yhstky's barcode generator. Create EAN-13, UPC, and Code 128…
Open →Meta Tag Generator
Generate SEO meta tags free with yhstky's 2026 meta tag generator. Build page title, description, and…
Open →QR Code Generator
Generate free QR codes online in 2026 with yhstky's QR code generator. Turn any text or…
Open →SEO
View all →Text
View all →Character Counter
Count characters free online in 2026 with yhstky's character counter. See totals with and without spaces,…
Open →Keyword Density Checker
Check keyword density free with yhstky's 2026 keyword density checker. Analyze any pasted text for keyword…
Open →Word Counter
Count words free online in 2026 with yhstky's word counter. Get word, character, sentence, paragraph, and…
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