Krokk reads a spreadsheet you already have (.xlsx, .xlsb, .xls, .ods, .csv, .tsv, .txt) and fills it into the web form in front of you — one row at a time, or many rows in a single run — while handling the details that quietly break Thai text in other tools. WHAT IT ACTUALLY HANDLES • File encoding — Thai .csv and .xls files exported from Excel are CP874/TIS-620, not UTF-8. Krokk detects and decodes them instead of showing mojibake. • Dates — Buddhist-era years, Thai digits (๐–๙), Excel serial numbers, and the format the target field really wants (ISO for a date input, DD/MM/YYYY for the many Thai systems that demand it). • Character order — Thai vowels and tone marks typed in the wrong order look identical on screen. Unicode NFC cannot fix them, because their combining class is zero. Krokk flags them and can reorder them with your confirmation. • Length limits — it counts graphemes, not code units, so a maxlength never cuts a syllable in half. • The filling itself — tools that simulate keyCode drop Thai characters entirely, and React-controlled inputs ignore values assigned directly. Krokk writes values the way each page expects. HOW A RUN GOES

Pick the file, or paste cells straight from Excel.
Krokk matches columns to fields by meaning, not by letters — a column named นามสกุล finds a field named "lastname". Save the result as a profile for that site.
Review every row before anything is written. Values that need a human decision are held back; safe conversions are shown with the before and after.
Preview the exact fields on the page, then fill. After each row Krokk reads the values back, to catch forms that reset earlier fields while re-rendering.

Krokk never submits the form. You always press submit yourself. PRIVACY No network requests at all. No accounts, no servers, no analytics, not even a web font. Your file is read locally and never leaves the machine. Access to a site is granted by you, one domain at a time, and can be revoked from the panel at any time. Even the licence check runs offline, with a digital signature. FREE AND PAID Free: 70 filled rows per month. Checking a file before use, and the wrong-keyboard-layout fixer, are unlimited and free forever. Pro (one-time payment): unlimited rows, continuous multi-row runs, .xlsx run reports, unlimited saved profiles. Organisation: a yearly licence for a team, with an IT policy for allowed domains. Full guide with screenshots: https://www.keep-dark.com/2026/09/krokk-guide/ Privacy policy: https://www.keep-dark.com/works/krokk/privacy/