Text & Code Diff Viewer
Text & Code Diff Viewer: Compares two texts line by line at matching indexes, marking equal, removed, and added lines without computing a minimal edit script.
About this text & code diff viewer
Text & Code Diff Viewer — browser-based utility.
How this tool works
Compares two text fields line by line at matching indexes. Equal lines receive two leading spaces; a changed pair emits a removed line then an added line. It does not compute Myers/LCS edit scripts, find moved lines, or apply patches.
- Read the two text fields in the browser.
- Split both fields on line breaks.
- Compare only lines at the same index and mark equal, removed, or added output.
- Render the plain text result without accessing a repository or generating a patch.
Worked example
Scenario: Compare same-index lines in two short texts.
Sample input:
Processing: Emit a space-marked equal line and minus/plus changed line.
Illustrative output:
Limits and verification
The comparison is index-aligned, so an insertion can appear as a sequence of replacements. There is no whitespace-ignore mode, syntax parsing, hunk generation, repository access, patch output, or file input.
Examples demonstrate an expected workflow; they do not prove every input or every branch of an external specification. Check important results with an independent source before using them for money, security, compliance, safety, or irreversible file changes.
Browser processing boundary
Tool input is processed by code running in the browser and is not intentionally sent to a CZOA processing API. The page can still request ordinary site assets, analytics, or advertising when those services are enabled. Browser extensions and managed-device software remain outside this tool's control.
Relevant references
These references govern or help explain the format, protocol, or calculation used here. Listing a reference does not claim certification or complete implementation of every optional feature.
- Standard Browser Web API / Algorithm Implementation (No single external RFC/ISO standard)
Content owner: CZOA Tools · Last reviewed: 2026-09-15 · Review methodology
How to use it
- Enter, paste, or select your input data into the Text & Code Diff Viewer workspace controls.
- Review available parameter fields, units, formats, or options configured for your task.
- Click the action button or observe immediate live calculations rendered in your browser runtime.
- Inspect the resulting output and any diagnostic messages, then copy or download the result if needed.
Frequently asked questions
How does Code Diff Viewer compare two texts?+
It splits both inputs by line break and compares matching indexes only. Equal lines start with two spaces; a changed pair emits `- old` followed by `+ new`.
What appears for one changed line?+
Comparing `a` then `b` with `a` then `c` renders ` a`, `- b`, and `+ c`. A line present only on the right starts with `+`; one present only on the left starts with `-`.
Which diff algorithms are absent?+
It has no LCS, moved-line detection, whitespace-ignore mode, syntax parsing, hunk headers, or patch application. Insertions can look like replacements when indexes shift.
Does Code Diff Viewer access a repository?+
No. It compares the two textareas in this browser and renders text output. It does not read git state, create a patch, or submit the compared text.