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Filter Words is a text tool that keeps only words matching a pattern or its inverse. It helps when you need to reorganize or reduce pasted text without moving every item manually.

The mode works on a specific unit: lines, words, sentences, paragraphs, or symbols. Choosing the correct unit is the most important step. A list of values usually works best as lines. A block of prose may need sentences or paragraphs. A bag of loose terms usually works best as words.

The tool is literal. It does not interpret the meaning of the content, correct grammar, validate data, or upload files. It splits the text according to the mode unit, applies the sort or filter operation, and shows plain-text output.

Example: apple banana apricot can become apple apricot. Before copying a long output, check whether the mode split matches the real shape of your text.

This kind of tool is especially helpful when text comes from several sources. You can sort values before pasting into a spreadsheet, filter lines containing a term, clean repeated lists, review blocks of notes, or prepare classroom examples. The preview gives you a chance to adjust before copying.

It is also useful when the next step expects text in a more predictable order. Alphabetized items are easier to scan. Length sorting can reveal unusually long entries. Filtering can separate useful lines from noise. Duplicate removal can make a list easier to compare. The tool does not decide what is important, but it gives you a controlled way to reshape the text before the next task.

Because the output is plain text, it works well as a bridge between messy copy and another app. You can paste from notes, logs, forms, documents, emails, classroom material, or simple data exports, then copy the cleaned result into the place where the final work happens.

The page uses the shared Sorting & Filtering transform engine. The row should map to content.type: sorting-filtering and content.mode: filterWords, which opens this exact mode by default.

Word filter mode splits on whitespace, filters matching tokens, and joins kept words with spaces.

Filters use a Pattern field with Contains, Starts with, Ends with, or Regex. Case sensitive controls letter-case matching. Invert match keeps the items that do not match. If Regex contains an invalid expression, the options panel marks the error.

The widget runs in the browser with sample, paste, clear, use output as input, download as .txt, and copy controls. Input is capped at 50,000 characters and output at 200,000 characters.

Output keeps the natural separator for the mode: lines with line breaks, words with spaces, sentences with spaces, paragraphs with blank lines, and symbols with no spaces.

Sorting and filtering are reversible only if you keep the original somewhere. Once a list is sorted, the old order is no longer visible in the output. Once items are filtered out, they are no longer present in the result. For important material, copy the original into a note or use the tool on a duplicate block.

Filter Words is useful when you already know which part of the text you want to keep or reorganize. If sorting, decide whether the criterion should be alphabetical, numeric, or length. If filtering, decide whether the pattern should appear anywhere, at the start, at the end, or as a regular expression.

An analyst can sort copied lists before pasting into a sheet. An editor can filter sentences containing a review term. A teacher can alphabetize vocabulary terms. A developer can filter lines from notes. Because output is plain text, it can move easily to another app.

For important work, test with a small sample first. If the result looks right, paste the full block. This review step avoids surprises from punctuation, unclear paragraph breaks, or a pattern that matches too much.

A practical routine is to start with the simplest rule that could work. For filters, try Contains before Regex. For sorting, try alphabetical before numeric if the values are mixed. For dedupe, check whether capitalization should matter. Simple choices are easier to audit and easier to explain to someone else reviewing the output.