Blob Notebook
Switch guideText & JSON comparison

TEXT & JSON COMPARISON

Put two versions side by side and see what changed.

Compare a revised paragraph, a query, or a configuration fragment without losing the surrounding note. Blob Notebook keeps comparison text in separate panes and can highlight line differences.

Open editor

Free to use · No account needed · Saved in this browser

A small text comparison 
Pane A                         Pane B
status: draft                  status: ready
owner: Maya                    owner: Maya
reviewed: false                reviewed: true
Changed lines show source edits. JSON value comparison can instead inspect structured data.Try this example

EDIT IN YOUR BROWSER

Your local draft

The notebook’s editing tools, right here. Save to notebook when you want a named copy.

Open full editor

Enable JavaScript to edit here, or open the full editor above. The example and guide are always available.

This draft is shared with the full editor for this task and stays separate from named notes. Export a copy or save to notebook to include it in a notebook backup. This editor page and its tools reopen offline after the editor reports readiness. Informational and privacy guides need a connection.

A FEW SIMPLE STEPS

Get started

  1. Open a note in the Notes & code workspace and show the comparison panes.
  2. Put the original text in Pane A and the edited version in Pane B.
  3. Choose Compare Diff and navigate the highlighted line differences.
  4. For JSON structure, choose JSON in both panes and use Compare JSON values.

Open editor takes you to the draft on this page. Paste or open a source file, or choose Try this example. Save to notebook keeps a named copy with your notes. Your workspace style stays unchanged.

Compare text and code as source

Switch to the Notes & code workspace when you need the full tools. Open the comparison panes, place the original in Pane A and the revision in Pane B, then use Compare Diff to highlight changed lines.

Each pane can have its own language mode. Navigate between differences, inspect the exact text, and edit the revision in place. Saved comparison content stays with the note so you can return to it later.

Choose the comparison that answers your question

Text diff is useful for changes to words, lines, formatting, and source code. It does not tell you whether two programs behave the same way or whether a changed SQL query returns the same rows.

For structured data, choose JSON in both panes and use Compare JSON values. That view helps inspect value changes; use the text diff when source layout itself matters.

Keep a copy of both versions

Give the note a descriptive title and export a notebook backup if the review needs to be kept or moved. Work remains in this browser; there is no public comparison link.

Copying one pane over another replaces its current text. Review the direction of a copy action and keep a backup when both versions are important.

A few questions

Does this comparison upload my text?

Text and JSON comparison run in the browser. The note and its comparison panes are saved in local browser storage.

Can I compare files with different languages?

Yes. Comparison panes have separate language choosers. A text comparison still compares source lines, regardless of their language modes.