See What Changed Between Two Text Files

TL;DR: Text Compare is a free online tool that shows the differences between two text or code files — side by side or unified, changed words highlighted — right in your browser, no signup, nothing uploaded or transferred.For code, configs, logs, or any two versions of the same file.

Start Comparing Text…
Screenshot of Text Compare
Christopher Atlan

개발자: Christopher Atlan (Leitmotif GmbH). 2020년부터 파일 비교 도구를, 18년 넘게 소프트웨어를 만들고 있습니다. diff.tools의 아이디어는 하나입니다. 형식마다 특화된 도구가 있고, 그 결과를 다음 도구로 넘길 수 있습니다.

A quick tour

  1. A diff you can actually read

    Side by side or unified, with syntax highlighting and the changed words marked inside changed lines. Unchanged sections collapse out of the way, and previous/next buttons walk you through the changes one by one.

    Two versions of a TypeScript file side by side: added lines green, removed lines red, changed words highlighted within lines

  2. It reads formats, not just characters

    Config files rarely differ where it matters — they differ in formatting, key order, and comments. JSON, JSONC, JSON5, YAML, TOML, and XML are normalized before comparing, and binary plists become readable text, so the diff below shows the one real change between a commented JSONC file and its minified export. A toggle brings back the files exactly as they are.

    A JSONC file and a minified JSON file compared as processed text: formatting and comments normalized away, only the real value change remains, with a Processed | Original toggle in the toolbar

  3. Share it, or hand it off

    A comparison survives a reload and can be shared as a link. And when a file turns out not to be text at all, one click hands the pair to Hex Compare for a byte-level look.

How to compare two text files?

  1. Open the free text comparison tool — it runs in any current browser, on your device, no signup.

    Start Comparing…

  2. Click Choose Text A and pick the first file, then Choose Text B for the other one.

  3. Read the diff side by side or unified, and jump from change to change. If a file is a config format, it's normalized first so you only see real changes.

Frequently asked questions

  1. Does it work for code?

    Yes. Syntax highlighting, line numbers, and collapsible unchanged sections — the diff reads like your editor.

  2. Can it compare JSON, YAML, or plist files?

    Yes, and smarter than character by character: binary plists become readable text, and JSON, JSONC, JSON5, YAML, TOML, and XML are normalized (formatting, key order, comments) so the diff shows real changes, not noise. A toggle switches back to the files exactly as they are.

  3. Are my files uploaded?

    No. The comparison runs entirely in your browser; file contents never leave your device.

  4. Can it edit or merge the files?

    No — it shows differences, it doesn’t change files. Editing is on the roadmap.

  5. Which browsers are supported?

    Any current browser — Chrome, Edge, Firefox, and Safari all work.

Requirements

Any current browser.

개인정보 보호 및 데이터 처리

개인정보 보호와 보안은 단순히 바라는 것이 아니라 요구해야 하는 것입니다. 최신 브라우저를 사용하면 기기에서 직접 모든 것을 처리할 수 있으므로 파일을 업로드하거나 전송하거나 공유하지 않습니다.

귀하의 파일은 완전히 비공개로 유지됩니다. 모든 비교는 브라우저에서 로컬로 진행됩니다. 귀하의 데이터는 귀하의 소유입니다.

LeitmotifChristopher Atlan
+2

도구를 만드는 팀

저희는 알프스 지역(오스트리아 케른텐과 독일 바이에른)에 있는 작은 회사 Leitmotif입니다. 파일 비교가 저희의 일상입니다. Mac용 diff 앱인 Kaleidoscope를 만들고 있으며, diff.tools는 그 경험을 브라우저로 가져온 것입니다.

저희는 전문 도구라면 보기에 아름답고 쓰기에 즐거우면서도, 일을 끝내는 데 필요한 모든 기능을 갖춰야 한다고 믿습니다. 그리고 저희는 여러분의 파일을 너무나 소중히 여기기에 절대 업로드하지 않습니다. 여기의 모든 것은 여러분의 컴퓨터에서 실행됩니다.

Feedback

We're constantly improving our free online text comparison to make it faster and more accurate. Share your feedback and help us understand what kind of files you compare.

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