The Volade Ecosystem — Web Tool

Free online text comparator

Paste two versions of a text and see instantly what changed: every difference is highlighted in green and red, line by line, word by word or character by character. Choose the side-by-side view or the unified document, fine-tune with the case, whitespace and blank-line options, then jump from one difference to the next — no account, no upload: the comparison runs in your browser.

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The tool

Compare two texts and spot every difference

Paste the original on the left and the modified version on the right (or import two .txt files): the result updates as you type, with built-in stats and navigation.

Text comparator

Online Productivity, Office & Documents
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Local comparison — Volade receives nothing
Text A — original 0 lines · 0 words · 0 chars
Text B — modified 0 lines · 0 words · 0 chars
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Options
Ready
0Lines added
0Lines removed
0Lines changed
0Identical lines
100 %Similarity
Paste two texts above to see their differences appear here.
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Free or Premium?

The text comparator is free and unlimited: run as many comparisons as you want at all three granularity levels, no account. Volade runs no comparison server — everything happens in your browser.

Unlimited comparisons, sample text and .txt importFree
Side-by-side and inline views, line/word/character levelFree
Case, whitespace, blank-line and sorting options plus statsFree
The complete premium ecosystem (CMS, desktop, scripts, API)Premium
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Features

A complete, fast and private diff

Two views: side by side or inline

Side-by-side mode lines the two versions up row by row for instant comparison; inline mode merges everything into a single document, with additions in green and deletions in red. Switch between the two without rerunning the comparison.

Choose a view

Lines, words or characters

At line level, spot added or removed paragraphs. At word level, isolate the exact term that changed in the sentence. At character level, catch the tiniest typo. Sub-diff automatically highlights the changed segments within each line.

Change level

Fine-grained filter options

Ignore case to compare content only, normalize multiple spaces, strip leading and trailing spaces, skip blank lines, or sort both lists to compare two inventories regardless of order. Stats track every option in real time.

Enable options

Private: the comparator stays on your device

The diff algorithm runs in your browser: no text is sent to a server, nothing is stored anywhere but your device's local storage. Ideal for comparing contracts, clauses, internal reports or confidential drafts.

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How it works

Compare two texts in three steps

Paste your two versions

The original version in box A, the corrected version in box B — or import two .txt files. You can also load the sample to try the tool in seconds.

Choose the view, level and options

Side by side or inline, lines, words or characters, case and whitespace to normalize… Tune the comparator to your needs: the comparison reruns automatically on every change.

Step through the differences and export

Use “Next diff” and “Previous diff” to review everything, check the similarity stats, then copy the result to paste into your document or email.

FAQ

Frequently asked questions about the text comparator

How can I compare two texts online for free?
Paste the original version in box A and the modified version in box B of the tool above: differences appear instantly, highlighted in green (additions) and red (deletions). No sign-up, no installation, no limits.
Are my texts sent to a server?
No. The comparison runs entirely in your browser: your texts are never uploaded, stored or read by Volade. That is why the tool suits sensitive documents: contracts, reports, confidential drafts.
What is the difference between line, word and character comparison?
At line level, the tool detects added, removed or replaced paragraphs. At word level, it highlights the exact term that changed in the sentence. At character level, it isolates the finest typo or variation — ideal for catching a misspelling or a missing accent.
How do I ignore case, spaces or blank lines?
Tick the relevant options before comparing: “Ignore case” treats INTRODUCTION and introduction as identical, “Multiple spaces” normalizes spacing, “Ignore start/end” trims edge spaces, “Ignore blank lines” skips empty paragraphs, and “Sort lines” compares two lists regardless of order.
Can I import text files (.txt)?
Yes: each column has an “Import .txt” button that loads a local text file. The file is read by your browser, with no network upload. For a Word or PDF document, copy and paste its text into the input boxes.
What do the green and red colors mean?
Green marks what was added in version B, red what was removed or changed compared to version A, and yellow a line transformed in both directions. Identical lines stay white.
Can I compare Word or PDF documents?
This tool works on text: open the document, select its content, then paste it into boxes A and B. To convert a PDF into editable text, use the PDF to Word converter from Volade, then compare the two outputs here.
Does the tool work on mobile?
Yes: the interface automatically switches to a single column on small screens, with the same options, stats and difference navigation. The comparator stays local, so it also works offline once the page has loaded.
Compare texts

The online text comparator, free and with no account

Comparing two texts is one of the most common proofreading moves: checking what changed between two versions of an article, finding the error a reviewer introduced, confirming a translation stays true to the original, or making sure a contract was not silently altered. The text comparator from Volade performs this comparison directly in your browser: you paste the two versions, the differences show up immediately in green and red, and nothing leaves your device.

Unlike services that require an account or uploading a file to a server, this tool is free, unlimited and instant : it runs as you type, shows clear stats (lines added, removed, changed, identical and similarity rate) and lets you jump from one difference to the next. Contracts, CVs, scripts, lists, codes, legal texts or novel drafts: any textual content fits here.

How does text comparison work?

The algorithm splits each text into lines (or words, or characters), then computes the longest common subsequence: the longest run of elements present in both documents. Anything outside it is either removed from A or added to B; when a deletion and an addition follow each other, they count as a modification. The result is then rendered side by side or as a unified document, with original line numbers for each column.

Compare by line, word or character

The comparison level determines how fine the result is. Line comparison suits paragraphs and lists: it shows at a glance which blocks moved. Word comparison word highlights the exact term that changed within a modified sentence. Character comparison character goes down to the finest detail: a forgotten letter, a missing accent, a changed number. Switch from one level to the next on the same text to refine the analysis progressively.

Ignore case, spaces and blank lines

Two texts can be identical to a human but different to a computer. Five options bridge that gap: ignore case (“Welcome” = “welcome”), normalize multiple spaces (tabs and double spaces become a single space), ignore leading and trailing spaces, skip blank lines and sort lines — essential for comparing two lists whose order differs while the content stays the same.

What is a text diff for?

For writers proofreading their articles, lawyers comparing two versions of clauses, recruiters tracking the evolution of a CV, students checking that a correction was applied, developers aligning two config files, translators checking the fidelity of a version — and anyone who simply wants to know: “what exactly changed?”

Who is this tool for?

For anyone who works with successive versions of text and wants an answer right away, with no installation or account. The interface adapts to small screens, your work history stays in your browser, and the “Copy result” button lets you reuse the compared text elsewhere. If you also need to count words, to clean up a document or extract text from a PDF, the related tools below complete the chain.

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