Line-by-line comparison
See exactly what differs changed.
Paste two versions side by side. Diffsight lines them up and marks every addition, removal and edit, instantly and in your browser.
NOTHING UPLOADED · RUNS LOCALLY · FREE TO USE
Features
Quiet tools, sharp results.
Aligned side by side
Two editors scroll together so the line you are reading always faces its counterpart.
Every change, coloured
Ember marks edits and removals. Ink marks additions. No other colours to learn.
Jump between differences
Step forward and back through each change with a count of how many remain.
Ignore the noise
Switch off whitespace and letter-case differences to focus on what really matters.
Changes, explained
A line-by-line list says what happened to each line, such as “Friday” became “Monday” or a number went from 3 to 4. Click any entry to jump straight to it.
How it works
Three steps. No account.
Paste
Drop the original on the left and the new version on the right.
Compare
Differences are highlighted as you type, line by line.
Decide
Review the summary, swap sides or clear the editors and go again.
Ready when you are
Two versions in.One clear answer out.
No sign-up needed to compare. Open the editor and paste.