Compare two texts and highlight differences. Free, private, runs in your browser.
A text diff (short for "difference") compares two blocks of text and highlights exactly what changed between them. Additions, deletions, and modifications are visually marked, making it easy to spot every change at a glance. Diff tools are fundamental to software development, writing, and document review.
Comparing two versions of code, a contract, a configuration file, or any document by reading them side by side is tedious and unreliable. A diff tool instantly highlights every change — no matter how subtle — so you never miss a modified line, a deleted paragraph, or a sneaky single-character edit.
Paste your original text in one panel and the modified text in the other. Convertful runs a standard diff algorithm in your browser and displays the results with color-coded highlights — green for additions, red for deletions. You can switch between side-by-side and inline views. Everything runs client-side with zero server involvement.
Yes. Both text inputs are processed entirely in your browser. No data is uploaded or stored. This makes it safe for comparing confidential code, legal documents, and sensitive content.
The tool performs a line-by-line diff, highlighting additions, deletions, and modifications between the two texts.
Yes. It works with any plain text including source code, configuration files, and documents.