Three types of generation and built-in data
This dummy text generator creates strings to check the size and line wrapping of text areas on web pages, app screens, design comps, etc.
The three available types are Lorem Ipsum, Soseki Natsume's "I Am a Cat", and Ryunosuke Akutagawa's "Rashomon". It is not a tool for users to upload and process their own text or files.
For Lorem Ipsum, elements are selected from an array of words like lorem, ipsum, and dolor embedded in the screen's code. For the two literary types, fixed text fragment arrays prepared from the beginning of each work are used.
The English literary arrays are English translation-style text and do not reproduce the typesetting of Japanese kanji and kana. The rights and exact quotation of the unique translations are not guaranteed.
It does not load a large corpus of works, so other works like "Run, Melos!" are not included in the generation materials.
The generation process is a simple method that selects array elements using Math.random() and concatenates them for a specified number of items.
It does not perform AI, Markov chains, morphological analysis, text comprehension, or adjust character type ratios. The same words or sentences may be repeated within the same paragraph or in different paragraphs, and context or grammatical naturalness is not guaranteed.
It is used as placeholder text for display checking, not as text to be published as an actual article.
Assembly of Lorem Ipsum and literary paragraphs
Lorem Ipsum paragraphs begin with a fixed opening: Lorem ipsum dolor sit amet, consectetur adipiscing elit. After that, 6 to 13 words per sentence are chosen from the built-in words, joined with a half-width space, capitalized at the beginning, and appended with a period to add sentences.
The number of sentences added is 3 to 6 per paragraph. Thus, each Lorem Ipsum paragraph has a common opening, and only the subsequent word sequence changes with each operation.
"I Am a Cat" and "Rashomon" do not synthesize words one by one. From fixed fragments that already include punctuation, 2 to 5 items per paragraph are selected, allowing duplicates, and concatenated with a half-width space in between.
This selected literary corpus does not force a fixed Lorem-style initial sentence. Since there is no process to preserve the order of the original work, even with the same work name, it will not become paragraphs exactly like the original or a coherent new text.
The literary texts are generated entirely at random.
Each selection by Math.random() changes the result. Whenever settings such as the text type, unit, or paragraph tag wrapping change, the tool automatically regenerates content using the current count and unit configuration—though switching the unit control presets defaults of 400 characters or 3 paragraphs.
Changing the numeric count input alone still requires pressing the "Generate" button to take effect. Character mode continues to operate as an upper bound rather than an exact-length guarantee.
There is no provision of a random seed specification, reproduction of the same result, fixing the generation pattern, or providing random numbers suitable for cryptography.
It is a simple generation to try different lengths and word arrangements for each layout.
Paragraph count mode and maximum character count mode
Choose 1–50 paragraphs or a maximum of 1–5,000 UTF-16 code units. The number field adjusts values outside the selected range. Character mode can cut a word or a sentence short and may generate less text than the maximum.
In character count mode, you can enter up to 5,000. It pre-generates paragraphs (10 for Lorem Ipsum, 15 for literary texts), joins them with empty lines, and slices from the beginning to the specified value.
The character mode slices the pre-generated text, ignoring <p> tags. The specified value acts as the maximum character count for the output, but if the total prepared text is shorter than the requested length, the output will be shorter.
This slicing does not look for word or sentence boundaries. Therefore, it may cut off in the middle of a word, a sentence, before punctuation, or split a surrogate pair.
Newlines are also included in the JavaScript string length. The output.length including tags is the displayed length. Since it is not a dedicated process for counting grapheme clusters or the visual number of characters on the screen, it differs from strict character count adjustment features for arbitrary input including emojis.
If you want to tidy up the end of the sentence, manually edit it after copying.
p tags, displayed character count, paragraph count, and copying
"Wrap each paragraph in <p> tags" is only displayed in paragraph count mode. When turned on, each generated paragraph is wrapped in <p> and </p> and arranged line by line.
Only this paragraph tag can be added. There is no function to automatically construct HTML elements like headings, lists, links, images, tables, or verify the validity of the generated HTML.
On the output card, the length of the current string, including tags and newlines, is displayed as the "Character count". In paragraph count mode, it displays the number of paragraphs matching the number of lines separated by normal empty lines or with <p> tags.
This is an auxiliary display to check the structure of the generation result, and it does not calculate manuscript paper equivalence, word count, reading time, or text quality.
"Copy result" requests the browser's Clipboard API to write the generated string. The application now awaits actual Clipboard promise fulfillment before presenting a confirmation, shows an explicit failure message if the operation is rejected, and invalidates any stale feedback notices from earlier actions.
If you cannot copy due to browser permissions or the execution environment, select the string in the output field and manually copy it.
There is no save function, such as buttons to save as TXT, HTML, or PDF files, or history features to save multiple drafts in a list.
How to use in layout checking
In the design of the article body, you can create multiple paragraphs in paragraph count mode to check the body width, line spacing, paragraph margins, and vertical length.
However, since the text generation relies on English literary fragments and Lorem Ipsum, it is currently not possible to test Japanese text rendering or wrapping behaviors.
Furthermore, as the generation is a combination of fixed fragments, it does not reproduce the vocabulary distribution of general modern texts.
When checking character limits for cards, lists, profile sections, etc., create a value near the upper limit in character count mode and paste it into the target component.
You can check whether CSS overflow, line-clamp, word-break, etc., look as intended. If it doesn't reach the specified value or the end is cut off midway, append or edit it as necessary before testing.
The output with <p> tags can be used when temporarily placing multiple paragraphs into the HTML body. Before using it on actual public pages, check the content, expressions, quotation ranges, accessibility, and HTML structure yourself.
This tool does not perform proofreading, copyright judgment, text summarization, translation, search ranking improvement, or evaluate load test results.
As a specific confirmation procedure, first select either Lorem or an English literary fragment to create the normal body volume in paragraph count mode.
Next, create around the upper limit for cards or lists in maximum character count mode, and check if the display frame breaks even if the end is cut off.
Finally, replace it with content containing actual headings, links, images, buttons, and your actual production text in Japanese or other target languages, which must be prepared separately.
Dummy text alone does not reproduce all the conditions of the production screen.
Lorem Ipsum has half-width spaces between words, but the fixed literary fragments add a half-width space between sentences. Since actual manuscripts may not have spaces in the same positions, the wrapping positions and the appearance at the end of lines will not necessarily match the production manuscript completely.
Conversely, extreme inputs such as long URLs, continuous alphanumeric characters, identifiers without line breaks, emojis, and combining characters are difficult to obtain from this generator, so prepare and check those boundary conditions separately.
The repetition of the same fragments is not a bug; it is because there is no process to exclude duplicates. Since the number of candidate materials is limited, the repetition becomes more noticeable as the number of paragraphs increases.
It is suited for briefly checking the body area below a heading, card height, scroll amount, etc., rather than text diversity. Adding vocabulary, switching works, or learning arbitrary texts are not possible.
Save/communication scope and unsupported functions
Selecting vocabulary and fragments and assembling strings are done by JavaScript on this page. There is no process to send setting values or generation results to external text APIs or AI services for generation.
However, it is necessary to distinguish this from site-wide communication accompanying the loading of the page body and common resources, advertisements, access analytics, share functions, etc.
It does not imply that the entire site is completely offline or has absolutely no communication.
The entered type, quantity, <p> tag settings, and generated results are treated as temporary screen states of the page. There is no history saving to databases, accounts, or localStorage, no synchronization with other devices, and no function to restore the same result after reloading.
The storage location of the copied content and its subsequent use depend on the browser and the user's environment.
The current implementation only handles string generation. It does not support placeholder images specifying width, height, and background color, bulk generation of dummy images, file uploads, JSON data, automatic generation of headings and lists, downloading, or quality evaluation as natural language.
Since the fixed fragments include sentences from the original works, do not reuse them as they are for published manuscripts; replace them with actual content after checking the layout.