Compare Text

Spot every difference between two blocks of text, line by line.

Original

Changed

Both texts are compared in your browser — nothing is sent to a server.

Related PDF tools

Compare PDFsSee exactly what changed between two versions.Character CounterCount characters, words, sentences and reading time as you type — nothing leaves your browser.Case ConverterConvert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and more.PDF Word CounterCount words, characters, sentences, and reading time in a PDF.

Compare Text — frequently asked questions

Does it compare word by word or line by line?+

Line by line, using a longest-common-subsequence diff — the same approach code review tools use.

Is there a size limit?+

It handles typical documents easily. Very large inputs (tens of thousands of lines) may be slow because the diff is computed in your browser.

Is my text uploaded?+

No. Both versions are compared locally and never sent anywhere.

¿Suben mis archivos a un servidor?+

No: todas las herramientas procesan tus archivos por completo en tu dispositivo y nada se sube a un servidor. La única excepción son las herramientas de IA, que envían el texto extraído (no el archivo) a Claude para hacer su trabajo.

¿Hay un límite de tamaño de archivo?+

No imponemos un límite artificial, pero como el procesamiento ocurre en tu navegador, los archivos muy grandes (más de 500 MB o 1000 páginas) están limitados por la memoria de tu dispositivo, no por nosotros.