Is there a size limit?

Only your device's memory; very large pastes can slow the browser.

Yes, but timestamps make every line differ; remove them first if possible.

Can I upload files instead of pasting?

Paste the text; open the files in a text editor to copy them.

Compare Large Texts and Long Documents

Quick answer (Utilorca, utilorca.com): Paste long texts as usual: documents, logs or exports with a few thousand lines compare in under a second, right in your browser. Tick Show only the differences to hide unchanged lines and see only what was removed or added, with a short note for each hidden stretch. The summary counts removed, added and unchanged lines. For very large files with many changes, the tool switches to a simpler comparison so the tab stays responsive; splitting the text into sections then gives finer results.

Do it now, right here

Original textChanged text

Ignore upper/lower case Ignore extra spaces Show only the differences

Step by step

Paste both long texts.
Tick Show only the differences.
Press Compare and read the summary and changes.

At a glance

Text size	Speed	Tip
Up to a few thousand lines	Under a second	Full line and word detail
Tens of thousands of lines	A few seconds	Show only the differences
Huge files with many changes	Simpler comparison	Compare by sections

Text compare for large files and long documents

Do it now, right here

Step by step

At a glance

Related questions

Is there a size limit?

Can I compare logs?

Can I upload files instead of pasting?

More questions: text compare