What is a unified diff patch for?

You can apply it with patch or git apply, or paste it into a ticket so someone sees the exact change.

Does it compare individual characters too?

Yes, it highlights the differing characters inside changed lines, so even a changed space shows.

Yes. It works in your browser, free and with no account.

Does what I type go anywhere?

No. The tool computes everything in the browser and sends nothing.

Do I need to install anything?

No. The tool runs in the browser, so opening the page is enough.

Does the tool remember what I type?

No. The tool stores nothing, neither in your browser nor on our server. Reload the page and you start afresh.

Where do I find similar tools?

In the For developers category: jSON, Base64 and JWT, hashes, UUIDs, cron, regex, diff, CIDR, chmod and timestamps.

Can I suggest a change or a new tool?

Yes, write through the contact form or on the VulCode Discord. Describe what the tool should give you.

Text diff

Paste two versions, see the changed lines and get a unified diff patch.

For developers tools

Category: For developers
Price: free

The tool starts in your browser.

Everything is calculated in your browser. Nothing you type is sent to our server.

How to use it in three steps

The tool as a schematic with this page's example. Each step's number stands where you take it: in the fields, at the result or outside the tool.

Text diff

What you enter

Two versions of server.properties: a different max-players and motd, a new white-list line

Paste the old version.
Paste the new version.

What you get

--- a/server.properties
+++ b/server.properties
@@ -1,4 +1,5 @@
 server-port=25565
-max-players=20
-motd=Test server
+max-players=50
+motd=VulCode server
 online-mode=true
+white-list=true

See the changed lines and copy the patch.

Six comparisons and the patch the tool gives

A unified diff patch with three lines of context, ready for patch or git apply. Different line ends from Windows and Linux do not count as a change.

Before and afterExpectedWhat the tool returnsResult

Before and aftermax-players 20 to 50, a new motd, a new linethe example from the tool's description

ExpectedTwo lines changed, one added, in one block

What the tool returns--- a/server.properties +++ b/server.properties @@ -1,4 +1,5 @@ server-port=25565 -max-players=20 -motd=Test server +max-players=50 +motd=VulCode server online-mode=true +white-list=true

As expected

Before and afterthe same text twiceno changes

ExpectedAn empty patch, no differences

What the tool returnsAn empty patch, no differences

As expected

Before and aftera, b with no final line break, then with oneno line break at the end of the file

ExpectedThe \ No newline at end of file marker

What the tool returns--- a/server.properties +++ b/server.properties @@ -1,2 +1,2 @@ a -b \ No newline at end of file +b

As expected

Before and afterWindows and Linux line endsCRLF, LF

ExpectedAn empty patch, no differences

What the tool returnsAn empty patch, no differences

As expected

Before and afterport = 1, then with double spacesignoring whitespace

ExpectedAn empty patch, no differences

What the tool returnsAn empty patch, no differences

As expected

Before and afterMotd=A and motd=aignoring case

ExpectedAn empty patch, no differences

What the tool returnsAn empty patch, no differences

As expected

6 of 6 cases as expected

Questions

VulCode Support

Online

Click a question on the left to start a conversation

Related tools

The tool does one job. If the same thing should happen automatically in your bot, server or system, we build it.

Missing a tool you need?

Tell us what you want to calculate or generate. We will tell you whether a tool is enough or an integration in your system fits better.